HYDROLOGY REPORT Tentative Tract No. 5978

Transcription

1 ATTACHMENT 5 October 2016 HYDROLOGY REPORT Tentative Tract No City of Simi Valley County of Ventura Prepared For: Landsea Holdings Corporation 7525 Irvine Center Drive Suite 200 Irvine, CA D: Prepared By: HUNSAKER & ASSOCIATES IRVINE, INC. Three Hughes, Irvine, CA WO#: HydroRpt-TT

2 HYDROLOGY REPORT FOR TENTATIVE TRACT NO City Simi Valley County of Ventura PREPARED BY Brian Jeffery Sauther, R.C.E , Exp. 06/30/18 Date: UNDER THE SUPERVISION OF: Mohammed Rowther, R.C.E , Exp. 06/30/18 Date: 222

3 HYDROLOGY REPORT FOR TENTATIVE TRACT NO TABLE OF CONTENTS SECTION PAGE 1. DISCUSSION A. Project Site... 1 B. Purpose... 1 C. Pre-Project Condition... 1 D. Proposed Condition... 3 E. Methodology... 4 F. Hydrology Results... 5 G. Storm Water Peak Flow Mitigation... 8 H. Hydraulic Results (Street Capacity Calculations I. Stormwater Quality Design Flow Rates Calculations Methodology.. 10 J. Conclusion PRE-PROJECT CONDITION HYDROLOGY Tc Calculations Results Hydrology Map 3. PROPOSED CONDITION HYDROLOGY TC Calculations Results VCRAT Calculations Hydrology Map 4. STREET CAPACITY CALCULATIONS Street Sections Street Capacity Calculations (FLOW MASTER) Catch Basin Tributary Areas & 100-Year Peak Flow Rates 5. WATER QUALITY CALCULATIONS SQDV Calculations TC Calculations SQDF Calculations BMP Sizing Calculations SQUIMP Map 223

4 6. REFERENCE PLANS 11x17 Simi Village Drive Storm Drain Drawing No x17 Storm Drain USPS Facility Drawing No (Off Site Storm Drain) 11x17 Plan for USPS Storm Drain (On-Site Facilities) Calculations USPS Storm Drain (On-Site Facilities) 11x17 Sycamore Canyon Channel FIGURES 1. Vicinity Map Pre-Project Site and Strom Drain System FEMA Floodplain Proposed Site and Strom Drain System Pre-Project Condition Drainage Areas Proposed Condition Drainage Areas Flow-by Detention Basin Structure Locations Typical Diversion Structure Design for Flow-By Basin Proposed DMAs and Structural BMPs TABLES 1. Summary of Peak Runoff for Pre-Project Conditions Summary of Peak Runoff for Proposed Conditions Summary of Peak Runoff Mitigation by Diversion for Proposed Condition Summary of Peak Flow Discharge to Simi Village Storm Drain System Summary of Storm Water Quality Design Flow (SQDF) for Proposed Condition

5 DISCUSSION 225

6 A. PROJECT SITE The Project Site Tentative Tract 5978 (TT 5978) is located in the City of Simi Valley, Ventura County. The site is bounded by Los Angeles Avenue to the north, Simi Village Drive to the south, the Mount McCoy US Post Office Site to east, and Madera Road to the west as shown in Figure 1 below. B. PURPOSE Figure 1. Vicinity Map The purpose of this study is to provide a conceptual hydrology for storm drain improvements to the proposed TT C. PRE-PROJECT CONDITION The pre-project site is composed of approximately 98% undeveloped and 2% developed land. The developed portion of the property consists of a detention basin facility which was constructed to mitigate peak runoff from the US Post Office site (see Figure 2). The undeveloped portion of the site generally drains to the west where flow is collected into an existing earthen channel located adjacent to Madera Road. The channel flows south to an existing storm drain in Simi Village Drive. 226

7 Figure 2. Pre-Project Site and Strom Drain System Runoff from the US Post Office site drains into an on-site storm drain before it is conveyed to the detention basin facility located on the proposed Project Site. Based on plans and hydrologic/hydraulic calculations for the detention basin, it can be concluded that the existing detention facility reduces the 10-year through 100-year peak flows to 4.7 cfs. The plans and calculations are available in Section 6. The flow from the detention basin is tributary to the storm drain in Simi Village Drive and storm drain in Simi Village Drive is tributary to an existing Ventura County Flood Control District storm drain facility (DWG No. Y ). Based on the FEMA FIRM Map Number 06111C0843E, approximately 60% of the project site lies within 100-year Floodplain defined as Zone AO with an average depth of flooding of approximately 1 foot (see Figure 3). The flooding on the Project Site is a result of regional flooding that reaches the project site via Los Angeles Ave. 227

8 Figure 3. FEMA Floodplain D. PROPOSED CONDITION The site is proposed to be a multi-family residential development with associated infrastructure improvements such as internal roads, wet and dry utilities, concrete walkways, landscaped open spaces areas, and a parks. Development of project site will include the addition of fill to lift the site out of the 100-year floodplain. An analysis of the proposed project site with respect to the 100-year floodplain is addressed in a separate report prepared by Huitt-Zollar Inc. Drainage from the improved site will be collected and treated by a proposed on-site storm drain system. The proposed storm drain system is shown on Figure

9 Figure 4. Proposed Site and Strom Drain System The proposed storm drain system will collect runoff from both the project site and from the post office site and convey it to existing storm drain in Simi Village Drive. Additional improvements of the project site are currently being constructed as a separate project by LandSea Homes which includes street improvements to Madera Road and Los Angeles Avenue. These street improvements include a new storm drain that is currently being constructed along Madera road on west side of project site. The new storm drain will collect drainage from Madera Road and Los Angeles Avenue and convey it to the existing storm drain in Simi Village Drive (See Figure 4.). E. METHODOLOGY Per City of Simi Valley s criteria and requirements, the Modified Rational Method as outlined in the Ventura County Watershed Protection District s (VCWPD s) Hydrology Manual was used to calculate pre-project and post-project runoff generated from the Project Site. The VCWPD s Time of Concentration Calculator (Tc Calculator) was used to develop Times of Concentration for all drainage areas. The VCWPD s VCRat computer program was used to calculated peak flow rates for all drainage areas and proposed storm drain facilities. The Bentley Flow Master Program was used to analyze the hydraulic capability of proposed street sections. 229

10 Per the City of Simi Valley s criteria and requirements, projects larger than 10 acres are limited to the developed 10-year peak runoff rate as calculated using VCWPD methods. This report provides a hydrologic analysis of 10-year, 25-year, 50-year, and 100-year storm events, for pre-project and post-project (proposed) conditions. The 100-year storm will be used to design all storm drain facilities. The 100-year storm will also be used to design all storm drain inlets and verify that the proposed storm drain facilities provides 100-year flood protection to all buildings. Hydrologic analysis of the 85 th percentile water quality storm event was used as a basis of design for the structural BMPs detailed in the project s Stormwater Quality Urban Impact Mitigation Plan (SQUIMP). The calculation of the of the water quality flow rates were based on the method outline in the Ventura County Technical Guidance Manual for Stormwater Quality Control Measures (TGM). F. HYDROLOGIC RESULTS Pre-Project Condition The pre-project site can be divided into 2 major drainage areas. These drainage areas are called Areas a and b. Drainage Area a consists of only one subarea: 1a (see Figure 5). Drainage Area b is subdivided into two subareas: 2b and 3b. Figure 5. Pre-Project Condition Drainage Areas 230

11 The hydrologic results for the pre-project conditions are summarized in Table 1. The hydrologic calculations and the hydrology map for the pre-project conditions can be found in Section 2. Node ID Table 1. Summary of Peak Runoff for Pre-Project Conditions 25-year 50-year 10-year Tributary Peak Peak Flow Type Peak Flow Area (acre) Flow Flow (cfs) (cfs) (cfs) 100-year Peak Flow (cfs) 1a b+3b * 4.7* 4.7* 4.7* 4ab Confluence ** 28.5** 35.6** 43.7** * Routed peak flow from existing detention basin per City of Simi Valley Storm Drain Plan # ** Combined flow from Project Site and existing detention basin that discharges to the Existing Storm Drain System in Simi Village Drive. As stated earlier in the report, a comprehensive routing analysis of the existing detention basin system is not included in this report. An initial review of the plans and calculations for the existing detention basin indicates that the discharge from the basin does not vary significantly from the 4.7 cfs reported for the 10-year to 100-year analysis. Therefore, we have concluded that the overall resulting peak flow from the areas tributary to the project site (Node 4ab) will not significantly change as a result of further detention basin analysis. Proposed Conditions Based on the initial rough grading plan, the Project Site has been divided into four drainage areas called Area 1A, 4B, 6C, and 11D as shown in Figure

12 Figure 6. Proposed Condition Drainage Areas The hydrologic results for proposed conditions are summarized in Table 2. The hydrologic calculations and a hydrology map for the proposed conditions can be found in Section 3. Node ID Table 2. Summary of Peak Runoff for Proposed Conditions Tributary Area (acre) 10-year Peak Flow (cfs) 25-year Peak Flow (cfs) 50-year Peak Flow (cfs) 100-year Peak Flow (cfs) 1A B C D AD

13 G. STORM WATER PEAK FLOW MITIGATION Based on the results of from the pre-project conditions and proposed conditions hydrologic analysis of the project site, the proposed development will generate a net increase of 18.8 cfs during the 10-Year storm, a net increase 24.4 cfs during the 25-Year storm, a net increase 25.6 cfs during the 50-Year storm, and a net increase of 33.3 cfs during the 100-year storm. The City of Simi Valley criteria and requirements state that for all projects larger than 10 acres, the rate of discharge shall be limited to the developed 10-year peak runoff rate. If downstream facilities are determined to be inadequate, additional detention may be considered for the reduction of discharge to a rate commensurate with deficient facilities. This study proposes to mitigate the increase in peak flow by attenuating flows to a maximum discharge of 26 cfs. This maximum discharge of 26 cfs is less than the 25-year pre-project flow rate of 28.5 cfs. The project will provide the maximum discharge of 26 cfs for all storms up to the 100-year storm event. The project will reduce peak flows using three proposed flow-by detention basins. The locations of the detention basins are shown in Figure 7. Figure 7. Flow-by Detention Basin Structure Locations Each detention basin system will include a diversion structure that will split the peak flow from the main storm drain line using internal flow control devices including a weir wall, an orifice plate, and a flap gate. A typical diversion structure design is shown in Figure

14 Figure 8. Typical Diversion Structure Design for Flow-By Basin Peak Runoff Mitigation and Volume Diversion. The VCRat model for the proposed condition was revised to incorporate the diversion of flow from the main line to each flow-by detention basin using the flow diversion function. The flow diverted to each detention basin (100-year) was adjusted until the maximum volume diverted to the proposed flow-by basin was approximately equal to 90% of the 1000 CF per developed acre target volume. The remaining 10% volume provided is to account for the additional storage required as a result of inefficiencies of proposed diversion system. The following table, Table 3 shows the results of intergrading flow diversion to the proposed model. Table 3. Summary of Peak Runoff Mitigation by Diversion for Proposed Condition Basin # Upstream Node ID Downstrea m Node ID Tributa ry Area (acre) Maximum Peak Flow In Main Line (cfs) Maximum Peak Flow Diverted to Basin (cfs) Maximum Storage Required Per VCRAT Model (CF) Design Storage Provided** (CF) 1 1A 3AE ,314 6, BC 9BF ,990 7, D 13DE ,401 6,552 Net Mitigation 14AD **Actual design storage provided to meet 1,000 CF/acre minimum storage target. 234

15 Summary of Results The following table, Table 4, summarizes the results of implementing the flow-by basin mitigation for all storm events. Table 4. Summary of Peak Flow Discharge to Simi Village Storm Drain System. Post Project Post Project Pre-Project Condition Peak Condition Peak Storm Event Condition Peak Flow Unmitigated Flow Mitigated Flow (CFS) (CFS) (CFS) 10-year year year year H. HYDRAULIC RESULTS (STREET CAPACITY CALCULATIONS) Per the City of Simi Valley criteria and requirements, the potential flooding to all proposed habitable structures was analyzed to evaluate possible flooding during a 100-year storm event. To complete this analysis, the street capacity of all proposed streets were calculated and the street capacities were compared to the 100-year flow rates intercepted at all catch basins. If the street capacity of a particular street was greater than the 100- year flow rate to the catch basins on that particular street, than flooding to habitable structures would not occur. The street capacities of all streets were calculated to the top of curb elevation. The flow rate to each catch basin was calculated based on the 100- year on the cfs/acre of each of three drainage basin as previously calculated and shown in Table 2 and the tributary area to each catch basin. The results of this analysis are included in Section 4. The results of the analysis indicate that all street capacities exceed the flow rates tributary to all proposed catch basins and no flooding to buildings will occur during the 100-year storm. I. STORMWATER QUALITY DESIGN FLOW RATES CALCULATIONS METHODOLOGY Due to the existence of high ground water and soil with low infiltration potential, the proposed site is not suitable for infiltration. Therefore, the Stormwater Quality Design Volume (SQDV) as outline the Ventura County TGM cannot be reliably retained. Initial Calculations of the SQDV are included in Section 5. The results of the SQDV calculations indicate that the required storage for detaining SQDV is equal to 3,769 CF/developed acre. This is volume of storage in more than 3.7 times the volume proposed for flood control mitigation. It has been determined that the retention of the SQDV is not technically feasible as depth of any proposed basin is limited due existence of high ground water. A forthcoming SQUIMP Plan proposes to treat 150% of the Stormwater Quality Design Flow (SQDF) rate based on the 0.2 inches/hr rainfall intensity as presented in the TGD. 235

16 To develop the SQDF rates for the Project Site, the Project Site was delineated into four separate drainage basins: 1A, 6C, 11D, and 15E. Each drainage basin was than further divided into Drainage Management Areas (DMAs) where each DMA is tributary to a single structural BMP system. Drainage Area 1A was subdivided into two DMAs: DMA1, and DMA2 as shown in Figure 9. Drainage Basin 6C was subdivide into two DMAs: DMA3 and DMA4. Drainage Basins 11D was subdivide into two DMAs: DMA 5 and DMA 6. Drainage Basins 15E was subdivide into two DMAs: DMA 7 and DMA 8. Figure 9. Proposed DMAs and Structural BMPs Results SQDF calculations were completed for each drainage area and the flow rate was proportioned for each DMA. SQDF calculations were competed using Equation 2-15 and Equation 2-13, and Table 2-1 of the TGM. Time of Concertation calculations for overland flow were completed using the Kinetic Wave Equation as part of the LA County Hydrocalc Program and Time of Centration calculations for pipe flow were competed using manning equation. A volume of 1 inch for 85 th Percentile-24hour storm rainfall was used for determining the intensity used within the Kinetic Wave Equation. The LA County Type 2 Soil (NRCS Hydrologic Soil Group C/D) was used to approximate Ventura County Type 3 soil (NRCS Hydrologic Soil Group C). 236

17 The hydrologic results from the SQDF calculations for the Project Site are illustrated in Table 5. The hydrologic calculations and a SQUIMP MAP for the proposed condition BMPs can be found in Section 5. Table 5. Summary of Storm Water Quality Design Flow (SQDF) for Proposed Condition Drainage AREA SQDF Tributary SQDF DMA Basin (acres) (CFS) Area (acres) (cfs) 1A DMA DMA C DMA DMA D DMA DMA E DMA DMA The proposed project will include 8 structural BMP systems to treat the SQDF generated from Project Site. Six of the structural BMP systems will be composed of underground bio-filtration modular wetlands systems. Two of the structural BMP systems will consist of standard above ground modular wetland systems. The Structural BMP sizing calculations for each Modular Wetland systems on the Project Site are available in the project SQUIMP and in Section 5 for reference. A full description of the proposed structural BMP systems for the Project Site is will be available in the project SQUIMP. The proposed structural BMP will provide full treatment of the SQDV using a flow based design rather than a volume based design. Using the peak flow from the SQDF, the volume treated over a 24-hour period is more than 4 times greater than the SQDV. A flow based design provides continuous treatment of flow at a rate no greater than the SQDF regardless of water quality storm event. J. CONCLUSION The proposed storm drain and structural BMP improvements will provide adequate flood control protection and water quality treatment. The proposed storm drain system will mitigate impacts to existing storm drain facilities. The post project peak flows discharged from the Project Site will be limited 26 cfs. 237

18 238

19 APPENDIX A EXHIBITS Exhibit I 4b. AMC II NRCS Curve Numbers for Developed Land DEVELOPED % IMPERVIOUS HYDROLOGIC SOIL GROUP (5) LAND USE EFFEC- AVER- A B c D Condition (1) TIVE AGE Open Spaces, Lawns, Parks, Goll Good Courses, Cemeteries, etc Fair Residential 1 ac. Lot Residential 112 ac. Lot Residential 1/3 ac. Lot Residential 1/4 ac. Lot Residential 1/5 ac. Lot Residential 1/6 ac. Lot Residential 1/8 ac. Lot Residential - Condos Industrial Unpaved Yards, etc Commercial & Business Industrial Parks, Paved Parking, - etc Parking Lots. Roofs. Driveways, - Paved Streets with Curbs & Drains Public Facilities & Institutions; Includes Schools, Government Centers, Military Bases, etc. (2) rrransportation and utilities (3) Newly graded/under construction - No veg Paved Streets with open ditches including right-<>f-way (3) Gravel streets including right-ofrway Dirt street including right-of-way Natural desert landscaping- native vegetation Farmsteads- buildings, lanes, driveways, and surrounding lots (2) ~gnculture- Straight Row + Crop Residue Cover on >5% of surface Good Agnculture- Straight Row + Crop Residue Cover on <5% of surface Poor VCWPD Design Hydrology Manual

20 PFDS: Contiguous US Home Site Map News Organization Search NWS All NOAA Go General Info Homepage Current Projects FAQ Glossary Data description NOAA ATLAS 14 POINT PRECIPITATION FREQUENCY ESTIMATES: CA Data type: Precipitation depth Units: English Time series type: Partial duration Precipitation Frequency (PF) PF Data Server PF in GIS Format PF Maps Temporal Distr. Time Series Data PFDS Perform. PF Documents Select location 1) Manually: a) By location (decimal degrees, use "-" for S and W): Latitude: Longitude: Submit b) By station (list of CA stations): Select station c) By address Simi Valley, California, United States ( Probable Maximum Precipitation (PMP) PMP Documents Miscellaneous Publications AEP Storm Analysis Record Precipitation 2) Use map: Map Terrain a) Select location Move crosshair or double click b) Click on station icon Show stations on map Contact Us Inquiries List-server Location information: Name: Simi Valley, California, USA* Latitude: Longitude: Elevation: ft ** 1mi 2km + * Source: ESRI Maps ** Source: USGS POINT PRECIPITATION FREQUENCY (PF) ESTIMATES WITH 90% CONFIDENCE INTERVALS AND SUPPLEMENTARY INFORMATION NOAA Atlas 14, Volume 6, Version 2 PF tabular PF graphical Supplementary information Print page Duration 5-min 10-min 15-min 30-min 60-min 2-hr 3-hr 6-hr 12-hr 24-hr 2-day PDS-based precipitation frequency estimates with 90% confidence intervals (in inches) 1 Average recurrence interval (years) ( ) ( ) ( ) ( ) ( ) ( ) ( ) 1.20 ( ) 1.59 ( ) 1.95 ( ) 2.62 ( ) ( ) ( ) ( ) ( ) ( ) ( ) 1.11 ( ) 1.57 ( ) 2.10 ( ) 2.59 ( ) 3.54 ( ) ( ) ( ) ( ) ( ) ( ) 1.16 ( ) 1.43 ( ) 2.03 ( ) 2.72 ( ) 3.38 ( ) 4.69 ( ) ( ) ( ) ( ) ( ) ( ) 1.36 ( ) 1.68 ( ) 2.39 ( ) 3.21 ( ) 3.99 ( ) 5.59 ( ) ( ) ( ) ( ) ( ) 1.18 ( ) 1.63 ( ) 2.00 ( ) 2.85 ( ) 3.82 ( ) 4.78 ( ) 6.77 ( ) ( ) ( ) ( ) ( ) 1.33 ( ) 1.82 ( ) 2.24 ( ) 3.18 ( ) 4.27 ( ) 5.35 ( ) 7.63 ( ) ( ) ( ) ( ) ( ) 1.46 ( ) 2.00 ( ) 2.46 ( ) 3.50 ( ) 4.70 ( ) 5.90 ( ) 8.48 ( ) ( ) ( ) ( ) 1.06 ( ) 1.60 ( ) 2.19 ( ) 2.69 ( ) 3.81 ( ) 5.13 ( ) 6.43 ( ) 9.31 ( ) ( ) ( ) ( ) 1.17 ( ) 1.77 ( ) 2.42 ( ) 2.97 ( ) 4.22 ( ) 5.67 ( ) 7.12 ( ) 10.4 ( ) ( ) ( ) ( ) 1.26 ( ) 1.90 ( ) 2.59 ( ) 3.18 ( ) 4.51 ( ) 6.06 ( ) 7.62 ( ) 11.2 ( ) /14/2016

21 PFDS: Contiguous US 3-day 2.88 ( ) 4-day 7-day 10-day 20-day 30-day 45-day 60-day 3.08 ( ) 3.62 ( ) 3.89 ( ) 4.55 ( ) 5.48 ( ) 6.55 ( ) 7.52 ( ) 3.96 ( ) 4.27 ( ) 5.06 ( ) 5.47 ( ) 6.43 ( ) 7.74 ( ) 9.18 ( ) 10.5 ( ) 5.34 ( ) 5.82 ( ) 6.95 ( ) 7.54 ( ) 8.94 ( ) 10.8 ( ) 12.8 ( ) 14.5 ( ) 6.44 ( ) 7.07 ( ) 8.48 ( ) 9.24 ( ) 11.0 ( ) 13.3 ( ) 15.8 ( ) 17.9 ( ) 7.91 ( ) 8.75 ( ) 10.6 ( ) 11.6 ( ) 13.9 ( ) 16.9 ( ) 20.1 ( ) 22.7 ( ) 9.01 ( ) 10.0 ( ) 12.2 ( ) 13.3 ( ) 16.2 ( ) 19.7 ( ) 23.5 ( ) 26.6 ( ) 10.1 ( ) 11.3 ( ) 13.8 ( ) 15.2 ( ) 18.5 ( ) 22.6 ( ) 27.1 ( ) 30.7 ( ) 11.2 ( ) 12.6 ( ) 15.4 ( ) 17.0 ( ) 20.9 ( ) 25.7 ( ) 30.9 ( ) 35.0 ( ) 12.7 ( ) 14.4 ( ) 17.7 ( ) 19.6 ( ) 24.3 ( ) 30.0 ( ) 36.2 ( ) 41.2 ( ) 13.8 ( ) 15.8 ( ) 19.4 ( ) 21.6 ( ) 26.9 ( ) 33.5 ( ) 40.5 ( ) 46.1 ( ) 1 Precipitation frequency (PF) estimates in this table are based on frequency analysis of partial duration series (PDS). Numbers in parenthesis are PF estimates at lower and upper bounds of the 90% confidence interval. The probability that precipitation frequency estimates (for a given duration and average recurrence interval) will be greater than the upper bound (or less than the lower bound) is 5%. Estimates at upper bounds are not checked against probable maximum precipitation (PMP) estimates and may be higher than currently valid PMP values. Please refer to NOAA Atlas 14 document for more information. Estimates from the table in CSV format: Precipitation frequency estimates Submit Main Link Categories: Home OWP(OHD) US Department of Commerce National Oceanic and Atmospheric Administration National Weather Service Office of Water Prediction (OWP) 1325 East West Highway Silver Spring, MD Page Author: HDSC webmaster Page last modified: August 27, 2014 Map Disclaimer Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities /14/2016

22 PRE-PROJECT CONDITION HYDROLOGY 242

23 \ Tc CALCULATOR RESULTS 243

24 \ 10-YEAR STORM 244

25 VENTURA COUNTY WATERSHED PROTECTION DISTRICT TIME OF CONCENTRATION TC Program Version: Project: TTM 5978 Date: 12:00:00 AM Engineer: BJS Consultant: Hunsaker S U M M A R Y O F C O M P U T A T I O N S Watershed Name: Watershed Name Zone Storm Soil Area (acres) TC (min) 1a K / / 22 AREA 1a Q10=18.95 CFS AREAS 2b & 3b = 4.7 CFS PER DRAWING

26 Watershed Name: Watershed Sub-Area Name: A Tc: Minutes DATA FOR SUB AREA 1 SUB AREA TIME OF CONCENTRATION: min. = 22 min. SUB AREA INPUT DATA Sub Area Name: A Total Area (ac): Flood Zone: 3 Rainfall Zone: K Storm Frequency (years): 10 Development Type: Undeveloped Soil Type: 3.00 Percent Impervious: 0 SUB AREA OUTPUT Intensity (in/hr): C Total: Sum Q Segments (cfs): Q Total (cfs): Sum Percent Area (%): Sum of Flow Path Travel Times (sec): 1, Time of Concentration (min): DATA FOR FLOW PATH 1 Flow Path Name: Overland FLOW PATH TRAVEL TIME (min): Flow Type: Overland Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 1.49 Percent of Sub-Area (%): 8.9 Overland Type: Valley Development Type: Undeveloped Map Slope: Effective Slope: Q for Flow Path (cfs): 1.68 Avg Velocity (ft/s): 0.40 Passed Scour Check: YES Scour Velocity (ft/sec): 1.24 DATA FOR FLOW PATH 2 Flow Path Name: swale FLOW PATH TRAVEL TIME (min): Flow Type: Natural Channel Length (ft):

27 Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 8.12 Percent of Sub-Area (%): 48.3 Overland Type: Valley Map Slope: Effective Slope: Q for Flow Path (cfs): 9.15 Q Top (cfs): 1.68 Q Bottom (cfs): Velocity Top (ft/s): 1.54 Velocity Bottom (ft/s): 2.37 Avg Velocity (ft/s): 1.95 Wave Velocity (ft/s): 2.93 DATA FOR FLOW PATH 3 Flow Path Name: Ditch FLOW PATH TRAVEL TIME (min): Flow Type: Channel Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 7.2 Percent of Sub-Area (%): 42.8 Bottom Width (ft): 5 Side Slope (H:V): 2 Manning's N: 0.03 Map Slope: Q for Flow Path (cfs): 8.12 Q Top (cfs): Q Bottom (cfs): Velocity Top (ft/s): 2.54 Velocity Bottom (ft/s): 3.01 Avg Velocity (ft/s): 2.78 Wave Velocity (ft/s):

28 \ 25-YEAR STORM 248

29 VENTURA COUNTY WATERSHED PROTECTION DISTRICT TIME OF CONCENTRATION TC Program Version: Project: TTM 5978 Date: 12:00:00 AM Engineer: BJS Consultant: Hunsaker S U M M A R Y O F C O M P U T A T I O N S Watershed Name: Watershed Name Zone Storm Soil Area (acres) TC (min) 1a K / / 19 AREA 1a Q25=23.79 CFS AREAS 2b & 3b = 4.7 CFS PER DRAWING

30 Watershed Name: Watershed Sub-Area Name: A Tc: Minutes DATA FOR SUB AREA 1 SUB AREA TIME OF CONCENTRATION: min. = 19 min. SUB AREA INPUT DATA Sub Area Name: A Total Area (ac): Flood Zone: 3 Rainfall Zone: K Storm Frequency (years): 25 Development Type: Undeveloped Soil Type: 3.00 Percent Impervious: 0 SUB AREA OUTPUT Intensity (in/hr): C Total: Sum Q Segments (cfs): Q Total (cfs): Sum Percent Area (%): Sum of Flow Path Travel Times (sec): 1, Time of Concentration (min): DATA FOR FLOW PATH 1 Flow Path Name: Overland FLOW PATH TRAVEL TIME (min): Flow Type: Overland Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 1.49 Percent of Sub-Area (%): 8.9 Overland Type: Valley Development Type: Undeveloped Map Slope: Effective Slope: Q for Flow Path (cfs): 2.11 Avg Velocity (ft/s): 0.51 Passed Scour Check: YES Scour Velocity (ft/sec): 1.30 DATA FOR FLOW PATH 2 Flow Path Name: swale FLOW PATH TRAVEL TIME (min): Flow Type: Natural Channel Length (ft):

31 Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 8.12 Percent of Sub-Area (%): 48.3 Overland Type: Valley Map Slope: Effective Slope: Q for Flow Path (cfs): Q Top (cfs): 2.11 Q Bottom (cfs): Velocity Top (ft/s): 1.62 Velocity Bottom (ft/s): 2.51 Avg Velocity (ft/s): 2.06 Wave Velocity (ft/s): 3.10 DATA FOR FLOW PATH 3 Flow Path Name: Ditch FLOW PATH TRAVEL TIME (min): Flow Type: Channel Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 7.2 Percent of Sub-Area (%): 42.8 Bottom Width (ft): 5 Side Slope (H:V): 2 Manning's N: 0.03 Map Slope: Q for Flow Path (cfs): Q Top (cfs): Q Bottom (cfs): Velocity Top (ft/s): 2.73 Velocity Bottom (ft/s): 3.23 Avg Velocity (ft/s): 2.98 Wave Velocity (ft/s):

32 \ 50-YEAR STORM 252

33 VENTURA COUNTY WATERSHED PROTECTION DISTRICT TIME OF CONCENTRATION TC Program Version: Project: TTM 5938 Date: 12:00:00 AM Engineer: BJS Consultant: Hunsaker S U M M A R Y O F C O M P U T A T I O N S Watershed Name: Watershed Name Zone Storm Soil Area (acres) TC (min) A K / / 17 AREA 1a Q50=30.88 CFS AREAS 2b & 3b = 4.7 CFS PER DRAWING

34 Watershed Name: Watershed Sub-Area Name: A Tc: Minutes DATA FOR SUB AREA 1 SUB AREA TIME OF CONCENTRATION: min. = 17 min. SUB AREA INPUT DATA Sub Area Name: A Total Area (ac): Flood Zone: 3 Rainfall Zone: K Storm Frequency (years): 50 Development Type: Undeveloped Soil Type: 3.00 Percent Impervious: 0 SUB AREA OUTPUT Intensity (in/hr): C Total: Sum Q Segments (cfs): Q Total (cfs): Sum Percent Area (%): Sum of Flow Path Travel Times (sec): 1, Time of Concentration (min): DATA FOR FLOW PATH 1 Flow Path Name: Overland FLOW PATH TRAVEL TIME (min): Flow Type: Overland Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 1.49 Percent of Sub-Area (%): 8.9 Overland Type: Valley Development Type: Undeveloped Map Slope: Effective Slope: Q for Flow Path (cfs): 2.74 Avg Velocity (ft/s): 0.60 Passed Scour Check: YES Scour Velocity (ft/sec): 0.52 DATA FOR FLOW PATH 2 Flow Path Name: swale FLOW PATH TRAVEL TIME (min): Flow Type: Natural Channel Length (ft):

35 Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 8.12 Percent of Sub-Area (%): 48.3 Overland Type: Valley Map Slope: Effective Slope: Q for Flow Path (cfs): Q Top (cfs): 2.74 Q Bottom (cfs): Velocity Top (ft/s): 1.71 Velocity Bottom (ft/s): 2.69 Avg Velocity (ft/s): 2.20 Wave Velocity (ft/s): 3.30 DATA FOR FLOW PATH 3 Flow Path Name: Ditch FLOW PATH TRAVEL TIME (min): Flow Type: Channel Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 7.2 Percent of Sub-Area (%): 42.8 Bottom Width (ft): 5 Side Slope (H:V): 2 Manning's N: 0.03 Map Slope: Q for Flow Path (cfs): Q Top (cfs): Q Bottom (cfs): Velocity Top (ft/s): 2.95 Velocity Bottom (ft/s): 3.48 Avg Velocity (ft/s): 3.22 Wave Velocity (ft/s):

36 \ 100-YEAR STORM 256

37 VENTURA COUNTY WATERSHED PROTECTION DISTRICT TIME OF CONCENTRATION TC Program Version: Project: TTM 5978 Date: 12:00:00 AM Engineer: BJS Consultant: Hunsaker S U M M A R Y O F C O M P U T A T I O N S Watershed Name: Watershed Name Zone Storm Soil Area (acres) TC (min) 1a K / / 14 AREA 1a Q100=38.98 CFS AREAS 2b & 3b = 4.7 CFS PER DRAWING

38 Watershed Name: Watershed Sub-Area Name: A Tc: Minutes DATA FOR SUB AREA 1 SUB AREA TIME OF CONCENTRATION: min. = 14 min. SUB AREA INPUT DATA Sub Area Name: A Total Area (ac): Flood Zone: 3 Rainfall Zone: K Storm Frequency (years): 100 Development Type: Undeveloped Soil Type: 3.00 Percent Impervious: 0 SUB AREA OUTPUT Intensity (in/hr): C Total: Sum Q Segments (cfs): Q Total (cfs): Sum Percent Area (%): Sum of Flow Path Travel Times (sec): Time of Concentration (min): DATA FOR FLOW PATH 1 Flow Path Name: Overland FLOW PATH TRAVEL TIME (min): Flow Type: Overland Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 1.49 Percent of Sub-Area (%): 8.9 Overland Type: Valley Development Type: Undeveloped Map Slope: Effective Slope: Q for Flow Path (cfs): 3.45 Avg Velocity (ft/s): 0.80 Passed Scour Check: YES Scour Velocity (ft/sec): 1.42 DATA FOR FLOW PATH 2 Flow Path Name: swale FLOW PATH TRAVEL TIME (min): Flow Type: Natural Channel Length (ft):

39 Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 8.12 Percent of Sub-Area (%): 48.3 Overland Type: Valley Map Slope: Effective Slope: Q for Flow Path (cfs): Q Top (cfs): 3.45 Q Bottom (cfs): Velocity Top (ft/s): 1.80 Velocity Bottom (ft/s): 2.86 Avg Velocity (ft/s): 2.33 Wave Velocity (ft/s): 3.50 DATA FOR FLOW PATH 3 Flow Path Name: Ditch FLOW PATH TRAVEL TIME (min): Flow Type: Channel Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 7.2 Percent of Sub-Area (%): 42.8 Bottom Width (ft): 5 Side Slope (H:V): 2 Manning's N: 0.03 Map Slope: Q for Flow Path (cfs): Q Top (cfs): Q Bottom (cfs): Velocity Top (ft/s): 3.17 Velocity Bottom (ft/s): 3.72 Avg Velocity (ft/s): 3.44 Wave Velocity (ft/s):

40 \ HYDROLOGY MAP 260

41 SITE 261

42 PROPOSED CONDITION HYDROLOGY 262

43 \ Tc CALCULATOR RESULTS 263

44 \ 10-YEAR STORM 264

45 VENTURA COUNTY WATERSHED PROTECTION DISTRICT TIME OF CONCENTRATION TC Program Version: Project: TT 5937 Date: 12:00:00 AM Engineer: BJS Consultant: Hunsaker S U M M A R Y O F C O M P U T A T I O N S Watershed Name: Watershed Name Zone Storm Soil Area (acres) TC (min) 1A (1A) K / / 9 11D (6D) K / / 11 4B (2B) K / / 10 6C (3C) K / /

46 Watershed Name: Watershed Sub-Area Name: 1A Tc: Minutes DATA FOR SUB AREA 1 SUB AREA TIME OF CONCENTRATION: min. = 9 min. SUB AREA INPUT DATA Sub Area Name: 1A Total Area (ac): 5.93 Flood Zone: 3 Rainfall Zone: K Storm Frequency (years): 10 Development Type: Residential Soil Type: 3.00 Percent Impervious: 79 SUB AREA OUTPUT Intensity (in/hr): C Total: Sum Q Segments (cfs): Q Total (cfs): Sum Percent Area (%): Sum of Flow Path Travel Times (sec): Time of Concentration (min): DATA FOR FLOW PATH 1 Flow Path Name: Overland FLOW PATH TRAVEL TIME (min): Flow Type: Overland Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 0.07 Percent of Sub-Area (%): 1.2 Overland Type: Valley Development Type: Residential Map Slope: Effective Slope: Q for Flow Path (cfs): 0.17 Avg Velocity (ft/s): 0.41 Passed Scour Check: N/A DATA FOR FLOW PATH 2 Flow Path Name: Street FLOW PATH TRAVEL TIME (min): Flow Type: Street Length (ft): Top Elevation (ft):

47 Bottom Elevation (ft): 731 Contributing Area (acres): 1.49 Percent of Sub-Area (%): 25.1 Street Width (ft): 32 Curb Height (in): 6 Map Slope: Q for Flow Path (cfs): 3.63 Q Top (cfs): 0.17 Q Bottom (cfs): 3.80 Velocity Top (ft/s): 0.86 Velocity Bottom (ft/s): 1.87 Avg Velocity (ft/s): 1.37 Wave Velocity (ft/s): 2.05 DATA FOR FLOW PATH 3 Flow Path Name: Pipe FLOW PATH TRAVEL TIME (min): Flow Type: Pipe Length (ft): Top Elevation (ft): 727 Bottom Elevation (ft): Contributing Area (acres): 4.37 Percent of Sub-Area (%): 73.7 Initial Pipe Diameter (in): 24 Calculated Pipe Diameter (in): 21 Used Pipe Diameter (in): 24 Manning's N: Map Slope: Q for Flow Path (cfs): Q Top (cfs): 3.80 Q Bottom (cfs): Avg Velocity (ft/s): 6.13 Wave Velocity (ft/s):

48 Project: TT 5937 Date: 12:00:00 AM Engineer: BJS Consultant: Hunsaker Sub-Area Name: 11D Tc: Minutes DATA FOR SUB AREA 2 SUB AREA TIME OF CONCENTRATION: min. = 11 min. SUB AREA INPUT DATA Sub Area Name: 11D Total Area (ac): 6.29 Flood Zone: 3 Rainfall Zone: K Storm Frequency (years): 10 Development Type: Residential Soil Type: 3.00 Percent Impervious: 79 SUB AREA OUTPUT Intensity (in/hr): C Total: Sum Q Segments (cfs): Q Total (cfs): Sum Percent Area (%): Sum of Flow Path Travel Times (sec): Time of Concentration (min): DATA FOR FLOW PATH 1 Flow Path Name: Overland FLOW PATH TRAVEL TIME (min): Flow Type: Overland Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 0.19 Percent of Sub-Area (%): 3.0 Overland Type: Valley Development Type: Residential Map Slope: Effective Slope: Q for Flow Path (cfs): 0.41 Avg Velocity (ft/s): 0.40 Passed Scour Check: N/A DATA FOR FLOW PATH 2 Flow Path Name: Street FLOW PATH TRAVEL TIME (min): Flow Type: Street 268

49 Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 1.11 Percent of Sub-Area (%): 17.6 Street Width (ft): 32 Curb Height (in): 6 Map Slope: Q for Flow Path (cfs): 2.41 Q Top (cfs): 0.41 Q Bottom (cfs): 2.82 Velocity Top (ft/s): 1.24 Velocity Bottom (ft/s): 2.01 Avg Velocity (ft/s): 1.63 Wave Velocity (ft/s): 2.44 DATA FOR FLOW PATH 3 Flow Path Name: Pipe FLOW PATH TRAVEL TIME (min): Flow Type: Pipe Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 4.99 Percent of Sub-Area (%): 79.3 Initial Pipe Diameter (in): 30 Calculated Pipe Diameter (in): 21 Used Pipe Diameter (in): 30 Manning's N: Map Slope: Q for Flow Path (cfs): Q Top (cfs): 2.82 Q Bottom (cfs): Avg Velocity (ft/s): 3.77 Wave Velocity (ft/s):

50 Project: TT 5937 Date: 12:00:00 AM Engineer: BJS Consultant: Hunsaker Sub-Area Name: 4B Tc: Minutes DATA FOR SUB AREA 3 SUB AREA TIME OF CONCENTRATION: min. = 10 min. SUB AREA INPUT DATA Sub Area Name: 4B Total Area (ac): 3.26 Flood Zone: 3 Rainfall Zone: K Storm Frequency (years): 10 Development Type: Commercial Soil Type: 3.00 Percent Impervious: 85 SUB AREA OUTPUT Intensity (in/hr): C Total: Sum Q Segments (cfs): 7.57 Q Total (cfs): 7.57 Sum Percent Area (%): Sum of Flow Path Travel Times (sec): Time of Concentration (min): DATA FOR FLOW PATH 1 Flow Path Name: Overland FLOW PATH TRAVEL TIME (min): Flow Type: Overland Length (ft): 200 Top Elevation (ft): 735 Bottom Elevation (ft): Contributing Area (acres): 0.24 Percent of Sub-Area (%): 7.4 Overland Type: Valley Development Type: Undeveloped Map Slope: Effective Slope: Q for Flow Path (cfs): 0.56 Avg Velocity (ft/s): 0.41 Passed Scour Check: YES Scour Velocity (ft/sec): 1.53 DATA FOR FLOW PATH 2 Flow Path Name: Pipe FLOW PATH TRAVEL TIME (min):

51 Flow Type: Pipe Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 3.02 Percent of Sub-Area (%): 92.6 Initial Pipe Diameter (in): 18 Calculated Pipe Diameter (in): 18 Used Pipe Diameter (in): 18 Manning's N: Map Slope: Q for Flow Path (cfs): 7.01 Q Top (cfs): 0.56 Q Bottom (cfs): 7.57 Avg Velocity (ft/s): 4.60 Wave Velocity (ft/s): 6.12 DATA FOR FLOW PATH 3 Flow Path Name: Pipe2 FLOW PATH TRAVEL TIME (min): Flow Type: Pipe Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 0 Percent of Sub-Area (%): 0.0 Initial Pipe Diameter (in): 24 Calculated Pipe Diameter (in): 12 Used Pipe Diameter (in): 24 Manning's N: Map Slope: Q for Flow Path (cfs): 0.00 Q Top (cfs): 7.57 Q Bottom (cfs): 7.57 Avg Velocity (ft/s): 2.82 Wave Velocity (ft/s):

52 Project: TT 5937 Date: 12:00:00 AM Engineer: BJS Consultant: Hunsaker Sub-Area Name: 6C Tc: Minutes DATA FOR SUB AREA 4 SUB AREA TIME OF CONCENTRATION: min. = 10 min. SUB AREA INPUT DATA Sub Area Name: 6C Total Area (ac): 3.41 Flood Zone: 3 Rainfall Zone: K Storm Frequency (years): 10 Development Type: Residential Soil Type: 3.00 Percent Impervious: 79 SUB AREA OUTPUT Intensity (in/hr): C Total: Sum Q Segments (cfs): 7.81 Q Total (cfs): 7.81 Sum Percent Area (%): Sum of Flow Path Travel Times (sec): Time of Concentration (min): DATA FOR FLOW PATH 1 Flow Path Name: Overland FLOW PATH TRAVEL TIME (min): Flow Type: Overland Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 0.1 Percent of Sub-Area (%): 2.9 Overland Type: Valley Development Type: Residential Map Slope: Effective Slope: Q for Flow Path (cfs): 0.23 Avg Velocity (ft/s): 0.40 Passed Scour Check: N/A DATA FOR FLOW PATH 2 Flow Path Name: Pipe FLOW PATH TRAVEL TIME (min): Flow Type: Pipe 272

53 Length (ft): Top Elevation (ft): 729 Bottom Elevation (ft): Contributing Area (acres): 1.83 Percent of Sub-Area (%): 53.7 Initial Pipe Diameter (in): 24 Calculated Pipe Diameter (in): 12 Used Pipe Diameter (in): 24 Manning's N: Map Slope: Q for Flow Path (cfs): 4.19 Q Top (cfs): 0.23 Q Bottom (cfs): 4.42 Avg Velocity (ft/s): 1.67 Wave Velocity (ft/s): 2.26 DATA FOR FLOW PATH 3 Flow Path Name: Street FLOW PATH TRAVEL TIME (min): Flow Type: Street Length (ft): Top Elevation (ft): Bottom Elevation (ft): 733 Contributing Area (acres): 1.48 Percent of Sub-Area (%): 43.4 Street Width (ft): 32 Curb Height (in): 6 Map Slope: Q for Flow Path (cfs): 3.39 Q Top (cfs): 4.42 Q Bottom (cfs): 7.81 Velocity Top (ft/s): 2.34 Velocity Bottom (ft/s): 2.70 Avg Velocity (ft/s): 2.52 Wave Velocity (ft/s):

54 \ 25-YEAR STORM 274

55 VENTURA COUNTY WATERSHED PROTECTION DISTRICT TIME OF CONCENTRATION TC Program Version: Project: TT 5937 Date: 12:00:00 AM Engineer: BJS Consultant: Hunsaker S U M M A R Y O F C O M P U T A T I O N S Watershed Name: Watershed Name Zone Storm Soil Area (acres) TC (min) 1A (1A) K / / 8 11D (6D) K / / 10 4B (2B) K / / 8 6C (3C) K / / 7 275

56 Watershed Name: Watershed Sub-Area Name: 1A Tc: Minutes DATA FOR SUB AREA 1 SUB AREA TIME OF CONCENTRATION: min. = 8 min. SUB AREA INPUT DATA Sub Area Name: 1A Total Area (ac): 5.93 Flood Zone: 3 Rainfall Zone: K Storm Frequency (years): 25 Development Type: Residential Soil Type: 3.00 Percent Impervious: 79 SUB AREA OUTPUT Intensity (in/hr): C Total: Sum Q Segments (cfs): Q Total (cfs): Sum Percent Area (%): Sum of Flow Path Travel Times (sec): Time of Concentration (min): DATA FOR FLOW PATH 1 Flow Path Name: Overland FLOW PATH TRAVEL TIME (min): Flow Type: Overland Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 0.07 Percent of Sub-Area (%): 1.2 Overland Type: Valley Development Type: Residential Map Slope: Effective Slope: Q for Flow Path (cfs): 0.20 Avg Velocity (ft/s): 0.52 Passed Scour Check: N/A DATA FOR FLOW PATH 2 Flow Path Name: Street FLOW PATH TRAVEL TIME (min): Flow Type: Street Length (ft): Top Elevation (ft):

57 Bottom Elevation (ft): 731 Contributing Area (acres): 1.49 Percent of Sub-Area (%): 25.1 Street Width (ft): 32 Curb Height (in): 6 Map Slope: Q for Flow Path (cfs): 4.35 Q Top (cfs): 0.20 Q Bottom (cfs): 4.56 Velocity Top (ft/s): 0.90 Velocity Bottom (ft/s): 1.96 Avg Velocity (ft/s): 1.43 Wave Velocity (ft/s): 2.14 DATA FOR FLOW PATH 3 Flow Path Name: Pipe FLOW PATH TRAVEL TIME (min): Flow Type: Pipe Length (ft): Top Elevation (ft): 727 Bottom Elevation (ft): Contributing Area (acres): 4.37 Percent of Sub-Area (%): 73.7 Initial Pipe Diameter (in): 24 Calculated Pipe Diameter (in): 21 Used Pipe Diameter (in): 24 Manning's N: Map Slope: Q for Flow Path (cfs): Q Top (cfs): 4.56 Q Bottom (cfs): Avg Velocity (ft/s): 6.42 Wave Velocity (ft/s):

58 Project: TT 5937 Date: 12:00:00 AM Engineer: BJS Consultant: Hunsaker Sub-Area Name: 11D Tc: Minutes DATA FOR SUB AREA 2 SUB AREA TIME OF CONCENTRATION: min. = 10 min. SUB AREA INPUT DATA Sub Area Name: 11D Total Area (ac): 6.29 Flood Zone: 3 Rainfall Zone: K Storm Frequency (years): 25 Development Type: Residential Soil Type: 3.00 Percent Impervious: 79 SUB AREA OUTPUT Intensity (in/hr): C Total: Sum Q Segments (cfs): Q Total (cfs): Sum Percent Area (%): Sum of Flow Path Travel Times (sec): Time of Concentration (min): DATA FOR FLOW PATH 1 Flow Path Name: Overland FLOW PATH TRAVEL TIME (min): Flow Type: Overland Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 0.19 Percent of Sub-Area (%): 3.0 Overland Type: Valley Development Type: Residential Map Slope: Effective Slope: Q for Flow Path (cfs): 0.49 Avg Velocity (ft/s): 0.51 Passed Scour Check: N/A DATA FOR FLOW PATH 2 Flow Path Name: Street FLOW PATH TRAVEL TIME (min): Flow Type: Street 278

59 Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 1.11 Percent of Sub-Area (%): 17.6 Street Width (ft): 32 Curb Height (in): 6 Map Slope: Q for Flow Path (cfs): 2.84 Q Top (cfs): 0.49 Q Bottom (cfs): 3.32 Velocity Top (ft/s): 1.29 Velocity Bottom (ft/s): 2.10 Avg Velocity (ft/s): 1.69 Wave Velocity (ft/s): 2.54 DATA FOR FLOW PATH 3 Flow Path Name: Pipe FLOW PATH TRAVEL TIME (min): Flow Type: Pipe Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 4.99 Percent of Sub-Area (%): 79.3 Initial Pipe Diameter (in): 30 Calculated Pipe Diameter (in): 21 Used Pipe Diameter (in): 30 Manning's N: Map Slope: Q for Flow Path (cfs): Q Top (cfs): 3.32 Q Bottom (cfs): Avg Velocity (ft/s): 3.94 Wave Velocity (ft/s):

60 Project: TT 5937 Date: 12:00:00 AM Engineer: BJS Consultant: Hunsaker Sub-Area Name: 4B Tc: Minutes DATA FOR SUB AREA 3 SUB AREA TIME OF CONCENTRATION: min. = 8 min. SUB AREA INPUT DATA Sub Area Name: 4B Total Area (ac): 3.26 Flood Zone: 3 Rainfall Zone: K Storm Frequency (years): 25 Development Type: Commercial Soil Type: 3.00 Percent Impervious: 85 SUB AREA OUTPUT Intensity (in/hr): C Total: Sum Q Segments (cfs): 9.63 Q Total (cfs): 9.63 Sum Percent Area (%): Sum of Flow Path Travel Times (sec): Time of Concentration (min): DATA FOR FLOW PATH 1 Flow Path Name: Overland FLOW PATH TRAVEL TIME (min): Flow Type: Overland Length (ft): 200 Top Elevation (ft): 735 Bottom Elevation (ft): Contributing Area (acres): 0.24 Percent of Sub-Area (%): 7.4 Overland Type: Valley Development Type: Undeveloped Map Slope: Effective Slope: Q for Flow Path (cfs): 0.71 Avg Velocity (ft/s): 0.52 Passed Scour Check: YES Scour Velocity (ft/sec): 1.59 DATA FOR FLOW PATH 2 Flow Path Name: Pipe FLOW PATH TRAVEL TIME (min):

61 Flow Type: Pipe Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 3.02 Percent of Sub-Area (%): 92.6 Initial Pipe Diameter (in): 18 Calculated Pipe Diameter (in): 21 Used Pipe Diameter (in): 21 Manning's N: Map Slope: Q for Flow Path (cfs): 8.92 Q Top (cfs): 0.71 Q Bottom (cfs): 9.63 Avg Velocity (ft/s): 4.89 Wave Velocity (ft/s): 6.63 DATA FOR FLOW PATH 3 Flow Path Name: Pipe2 FLOW PATH TRAVEL TIME (min): Flow Type: Pipe Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 0 Percent of Sub-Area (%): 0.0 Initial Pipe Diameter (in): 24 Calculated Pipe Diameter (in): 15 Used Pipe Diameter (in): 24 Manning's N: Map Slope: Q for Flow Path (cfs): 0.00 Q Top (cfs): 9.63 Q Bottom (cfs): 9.63 Avg Velocity (ft/s): 4.82 Wave Velocity (ft/s):

62 Project: TT 5937 Date: 12:00:00 AM Engineer: BJS Consultant: Hunsaker Sub-Area Name: 6C Tc: Minutes DATA FOR SUB AREA 4 SUB AREA TIME OF CONCENTRATION: min. = 7 min. SUB AREA INPUT DATA Sub Area Name: 6C Total Area (ac): 3.41 Flood Zone: 3 Rainfall Zone: K Storm Frequency (years): 25 Development Type: Residential Soil Type: 3.00 Percent Impervious: 79 SUB AREA OUTPUT Intensity (in/hr): C Total: Sum Q Segments (cfs): Q Total (cfs): Sum Percent Area (%): Sum of Flow Path Travel Times (sec): Time of Concentration (min): DATA FOR FLOW PATH 1 Flow Path Name: Overland FLOW PATH TRAVEL TIME (min): Flow Type: Overland Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 0.1 Percent of Sub-Area (%): 2.9 Overland Type: Valley Development Type: Residential Map Slope: Effective Slope: Q for Flow Path (cfs): 0.32 Avg Velocity (ft/s): 0.51 Passed Scour Check: N/A DATA FOR FLOW PATH 2 Flow Path Name: Pipe FLOW PATH TRAVEL TIME (min): Flow Type: Pipe 282

63 Length (ft): Top Elevation (ft): 729 Bottom Elevation (ft): Contributing Area (acres): 1.83 Percent of Sub-Area (%): 53.7 Initial Pipe Diameter (in): 24 Calculated Pipe Diameter (in): 15 Used Pipe Diameter (in): 24 Manning's N: Map Slope: Q for Flow Path (cfs): 5.80 Q Top (cfs): 0.32 Q Bottom (cfs): 6.12 Avg Velocity (ft/s): 2.82 Wave Velocity (ft/s): 3.86 DATA FOR FLOW PATH 3 Flow Path Name: Street FLOW PATH TRAVEL TIME (min): Flow Type: Street Length (ft): Top Elevation (ft): Bottom Elevation (ft): 733 Contributing Area (acres): 1.48 Percent of Sub-Area (%): 43.4 Street Width (ft): 32 Curb Height (in): 6 Map Slope: Q for Flow Path (cfs): 4.69 Q Top (cfs): 6.12 Q Bottom (cfs): Velocity Top (ft/s): 2.54 Velocity Bottom (ft/s): 2.93 Avg Velocity (ft/s): 2.73 Wave Velocity (ft/s):

64 \ 50-YEAR STORM 284

65 VENTURA COUNTY WATERSHED PROTECTION DISTRICT TIME OF CONCENTRATION TC Program Version: Project: TT 5937 Date: 12:00:00 AM Engineer: BJS Consultant: Hunsaker S U M M A R Y O F C O M P U T A T I O N S Watershed Name: Watershed Name Zone Storm Soil Area (acres) TC (min) 1A (1A) K / / 7 11D (6D) K / / 9 4B (2B) K / / 7 6C (3C) K / / 7 285

66 Watershed Name: Watershed Sub-Area Name: 1A Tc: Minutes DATA FOR SUB AREA 1 SUB AREA TIME OF CONCENTRATION: min. = 7 min. SUB AREA INPUT DATA Sub Area Name: 1A Total Area (ac): 5.93 Flood Zone: 3 Rainfall Zone: K Storm Frequency (years): 50 Development Type: Residential Soil Type: 3.00 Percent Impervious: 79 SUB AREA OUTPUT Intensity (in/hr): C Total: Sum Q Segments (cfs): Q Total (cfs): Sum Percent Area (%): Sum of Flow Path Travel Times (sec): Time of Concentration (min): DATA FOR FLOW PATH 1 Flow Path Name: Overland FLOW PATH TRAVEL TIME (min): Flow Type: Overland Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 0.07 Percent of Sub-Area (%): 1.2 Overland Type: Valley Development Type: Residential Map Slope: Effective Slope: Q for Flow Path (cfs): 0.24 Avg Velocity (ft/s): 0.60 Passed Scour Check: N/A DATA FOR FLOW PATH 2 Flow Path Name: Street FLOW PATH TRAVEL TIME (min): Flow Type: Street Length (ft): Top Elevation (ft):

67 Bottom Elevation (ft): 731 Contributing Area (acres): 1.49 Percent of Sub-Area (%): 25.1 Street Width (ft): 32 Curb Height (in): 6 Map Slope: Q for Flow Path (cfs): 5.17 Q Top (cfs): 0.24 Q Bottom (cfs): 5.41 Velocity Top (ft/s): 0.94 Velocity Bottom (ft/s): 2.05 Avg Velocity (ft/s): 1.49 Wave Velocity (ft/s): 2.24 DATA FOR FLOW PATH 3 Flow Path Name: Pipe FLOW PATH TRAVEL TIME (min): Flow Type: Pipe Length (ft): Top Elevation (ft): 727 Bottom Elevation (ft): Contributing Area (acres): 4.37 Percent of Sub-Area (%): 73.7 Initial Pipe Diameter (in): 24 Calculated Pipe Diameter (in): 24 Used Pipe Diameter (in): 24 Manning's N: Map Slope: Q for Flow Path (cfs): Q Top (cfs): 5.41 Q Bottom (cfs): Avg Velocity (ft/s): 8.76 Wave Velocity (ft/s):

68 Project: TT 5937 Date: 12:00:00 AM Engineer: BJS Consultant: Hunsaker Sub-Area Name: 11D Tc: Minutes DATA FOR SUB AREA 2 SUB AREA TIME OF CONCENTRATION: min. = 9 min. SUB AREA INPUT DATA Sub Area Name: 11D Total Area (ac): 6.29 Flood Zone: 3 Rainfall Zone: K Storm Frequency (years): 50 Development Type: Residential Soil Type: 3.00 Percent Impervious: 79 SUB AREA OUTPUT Intensity (in/hr): C Total: Sum Q Segments (cfs): Q Total (cfs): Sum Percent Area (%): Sum of Flow Path Travel Times (sec): Time of Concentration (min): DATA FOR FLOW PATH 1 Flow Path Name: Overland FLOW PATH TRAVEL TIME (min): Flow Type: Overland Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 0.19 Percent of Sub-Area (%): 3.0 Overland Type: Valley Development Type: Residential Map Slope: Effective Slope: Q for Flow Path (cfs): 0.58 Avg Velocity (ft/s): 0.60 Passed Scour Check: N/A DATA FOR FLOW PATH 2 Flow Path Name: Street FLOW PATH TRAVEL TIME (min): Flow Type: Street 288

69 Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 1.11 Percent of Sub-Area (%): 17.6 Street Width (ft): 32 Curb Height (in): 6 Map Slope: Q for Flow Path (cfs): 3.39 Q Top (cfs): 0.58 Q Bottom (cfs): 3.97 Velocity Top (ft/s): 1.35 Velocity Bottom (ft/s): 2.19 Avg Velocity (ft/s): 1.77 Wave Velocity (ft/s): 2.66 DATA FOR FLOW PATH 3 Flow Path Name: Pipe FLOW PATH TRAVEL TIME (min): Flow Type: Pipe Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 4.99 Percent of Sub-Area (%): 79.3 Initial Pipe Diameter (in): 30 Calculated Pipe Diameter (in): 21 Used Pipe Diameter (in): 30 Manning's N: Map Slope: Q for Flow Path (cfs): Q Top (cfs): 3.97 Q Bottom (cfs): Avg Velocity (ft/s): 4.12 Wave Velocity (ft/s):

70 Project: TT 5937 Date: 12:00:00 AM Engineer: BJS Consultant: Hunsaker Sub-Area Name: 4B Tc: Minutes DATA FOR SUB AREA 3 SUB AREA TIME OF CONCENTRATION: min. = 7 min. SUB AREA INPUT DATA Sub Area Name: 4B Total Area (ac): 3.26 Flood Zone: 3 Rainfall Zone: K Storm Frequency (years): 50 Development Type: Commercial Soil Type: 3.00 Percent Impervious: 85 SUB AREA OUTPUT Intensity (in/hr): C Total: Sum Q Segments (cfs): Q Total (cfs): Sum Percent Area (%): Sum of Flow Path Travel Times (sec): Time of Concentration (min): DATA FOR FLOW PATH 1 Flow Path Name: Overland FLOW PATH TRAVEL TIME (min): Flow Type: Overland Length (ft): 200 Top Elevation (ft): 735 Bottom Elevation (ft): Contributing Area (acres): 0.24 Percent of Sub-Area (%): 7.4 Overland Type: Valley Development Type: Undeveloped Map Slope: Effective Slope: Q for Flow Path (cfs): 0.84 Avg Velocity (ft/s): 0.61 Passed Scour Check: YES Scour Velocity (ft/sec): 1.64 DATA FOR FLOW PATH 2 Flow Path Name: Pipe FLOW PATH TRAVEL TIME (min):

71 Flow Type: Pipe Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 3.02 Percent of Sub-Area (%): 92.6 Initial Pipe Diameter (in): 18 Calculated Pipe Diameter (in): 21 Used Pipe Diameter (in): 21 Manning's N: Map Slope: Q for Flow Path (cfs): Q Top (cfs): 0.84 Q Bottom (cfs): Avg Velocity (ft/s): 5.10 Wave Velocity (ft/s): 6.78 DATA FOR FLOW PATH 3 Flow Path Name: Pipe2 FLOW PATH TRAVEL TIME (min): Flow Type: Pipe Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 0 Percent of Sub-Area (%): 0.0 Initial Pipe Diameter (in): 24 Calculated Pipe Diameter (in): 15 Used Pipe Diameter (in): 24 Manning's N: Map Slope: Q for Flow Path (cfs): 0.00 Q Top (cfs): Q Bottom (cfs): Avg Velocity (ft/s): 4.99 Wave Velocity (ft/s):

72 Project: TT 5937 Date: 12:00:00 AM Engineer: BJS Consultant: Hunsaker Sub-Area Name: 6C Tc: Minutes DATA FOR SUB AREA 4 SUB AREA TIME OF CONCENTRATION: min. = 7 min. SUB AREA INPUT DATA Sub Area Name: 6C Total Area (ac): 3.41 Flood Zone: 3 Rainfall Zone: K Storm Frequency (years): 50 Development Type: Residential Soil Type: 3.00 Percent Impervious: 79 SUB AREA OUTPUT Intensity (in/hr): C Total: Sum Q Segments (cfs): Q Total (cfs): Sum Percent Area (%): Sum of Flow Path Travel Times (sec): Time of Concentration (min): DATA FOR FLOW PATH 1 Flow Path Name: Overland FLOW PATH TRAVEL TIME (min): Flow Type: Overland Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 0.1 Percent of Sub-Area (%): 2.9 Overland Type: Valley Development Type: Residential Map Slope: Effective Slope: Q for Flow Path (cfs): 0.35 Avg Velocity (ft/s): 0.60 Passed Scour Check: N/A DATA FOR FLOW PATH 2 Flow Path Name: Pipe FLOW PATH TRAVEL TIME (min): Flow Type: Pipe 292

73 Length (ft): Top Elevation (ft): 729 Bottom Elevation (ft): Contributing Area (acres): 1.83 Percent of Sub-Area (%): 53.7 Initial Pipe Diameter (in): 24 Calculated Pipe Diameter (in): 15 Used Pipe Diameter (in): 24 Manning's N: Map Slope: Q for Flow Path (cfs): 6.35 Q Top (cfs): 0.35 Q Bottom (cfs): 6.70 Avg Velocity (ft/s): 2.89 Wave Velocity (ft/s): 3.96 DATA FOR FLOW PATH 3 Flow Path Name: Street FLOW PATH TRAVEL TIME (min): Flow Type: Street Length (ft): Top Elevation (ft): Bottom Elevation (ft): 733 Contributing Area (acres): 1.48 Percent of Sub-Area (%): 43.4 Street Width (ft): 32 Curb Height (in): 6 Map Slope: Q for Flow Path (cfs): 5.14 Q Top (cfs): 6.70 Q Bottom (cfs): Velocity Top (ft/s): 2.59 Velocity Bottom (ft/s): 2.99 Avg Velocity (ft/s): 2.79 Wave Velocity (ft/s):

74 \ 100-YEAR STORM 294

75 VENTURA COUNTY WATERSHED PROTECTION DISTRICT TIME OF CONCENTRATION TC Program Version: Project: TT 5937 Date: 12:00:00 AM Engineer: BJS Consultant: Hunsaker S U M M A R Y O F C O M P U T A T I O N S Watershed Name: Watershed Name Zone Storm Soil Area (acres) TC (min) 1A (1A) K / / 6 11D (6D) K / / 7 4B (2B) K / / 5 6C (3C) K / / 5 295

76 Watershed Name: Watershed Sub-Area Name: 1A Tc: Minutes DATA FOR SUB AREA 1 SUB AREA TIME OF CONCENTRATION: min. = 6 min. SUB AREA INPUT DATA Sub Area Name: 1A Total Area (ac): 5.93 Flood Zone: 3 Rainfall Zone: K Storm Frequency (years): 100 Development Type: Residential Soil Type: 3.00 Percent Impervious: 79 SUB AREA OUTPUT Intensity (in/hr): C Total: Sum Q Segments (cfs): Q Total (cfs): Sum Percent Area (%): Sum of Flow Path Travel Times (sec): Time of Concentration (min): DATA FOR FLOW PATH 1 Flow Path Name: Overland FLOW PATH TRAVEL TIME (min): Flow Type: Overland Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 0.07 Percent of Sub-Area (%): 1.2 Overland Type: Valley Development Type: Residential Map Slope: Effective Slope: Q for Flow Path (cfs): 0.30 Avg Velocity (ft/s): 0.80 Passed Scour Check: N/A DATA FOR FLOW PATH 2 Flow Path Name: Street FLOW PATH TRAVEL TIME (min): Flow Type: Street Length (ft): Top Elevation (ft):

77 Bottom Elevation (ft): 731 Contributing Area (acres): 1.49 Percent of Sub-Area (%): 25.1 Street Width (ft): 32 Curb Height (in): 6 Map Slope: Q for Flow Path (cfs): 6.33 Q Top (cfs): 0.30 Q Bottom (cfs): 6.62 Velocity Top (ft/s): 0.99 Velocity Bottom (ft/s): 2.15 Avg Velocity (ft/s): 1.57 Wave Velocity (ft/s): 2.36 DATA FOR FLOW PATH 3 Flow Path Name: Pipe FLOW PATH TRAVEL TIME (min): Flow Type: Pipe Length (ft): Top Elevation (ft): 727 Bottom Elevation (ft): Contributing Area (acres): 4.37 Percent of Sub-Area (%): 73.7 Initial Pipe Diameter (in): 24 Calculated Pipe Diameter (in): 24 Used Pipe Diameter (in): 24 Manning's N: Map Slope: Q for Flow Path (cfs): Q Top (cfs): 6.62 Q Bottom (cfs): Avg Velocity (ft/s): 9.21 Wave Velocity (ft/s):

78 Project: TT 5937 Date: 12:00:00 AM Engineer: BJS Consultant: Hunsaker Sub-Area Name: 11D Tc: Minutes DATA FOR SUB AREA 2 SUB AREA TIME OF CONCENTRATION: min. = 7 min. SUB AREA INPUT DATA Sub Area Name: 11D Total Area (ac): 6.29 Flood Zone: 3 Rainfall Zone: K Storm Frequency (years): 100 Development Type: Residential Soil Type: 3.00 Percent Impervious: 79 SUB AREA OUTPUT Intensity (in/hr): C Total: Sum Q Segments (cfs): Q Total (cfs): Sum Percent Area (%): Sum of Flow Path Travel Times (sec): Time of Concentration (min): DATA FOR FLOW PATH 1 Flow Path Name: Overland FLOW PATH TRAVEL TIME (min): Flow Type: Overland Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 0.19 Percent of Sub-Area (%): 3.0 Overland Type: Valley Development Type: Residential Map Slope: Effective Slope: Q for Flow Path (cfs): 0.74 Avg Velocity (ft/s): 0.80 Passed Scour Check: N/A DATA FOR FLOW PATH 2 Flow Path Name: Street FLOW PATH TRAVEL TIME (min): Flow Type: Street 298

79 Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 1.11 Percent of Sub-Area (%): 17.6 Street Width (ft): 32 Curb Height (in): 6 Map Slope: Q for Flow Path (cfs): 4.33 Q Top (cfs): 0.74 Q Bottom (cfs): 5.07 Velocity Top (ft/s): 1.44 Velocity Bottom (ft/s): 2.33 Avg Velocity (ft/s): 1.88 Wave Velocity (ft/s): 2.83 DATA FOR FLOW PATH 3 Flow Path Name: Pipe FLOW PATH TRAVEL TIME (min): Flow Type: Pipe Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 4.99 Percent of Sub-Area (%): 79.3 Initial Pipe Diameter (in): 30 Calculated Pipe Diameter (in): 24 Used Pipe Diameter (in): 30 Manning's N: Map Slope: Q for Flow Path (cfs): Q Top (cfs): 5.07 Q Bottom (cfs): Avg Velocity (ft/s): 5.71 Wave Velocity (ft/s):

80 Project: TT 5937 Date: 12:00:00 AM Engineer: BJS Consultant: Hunsaker Sub-Area Name: 4B Tc: Minutes DATA FOR SUB AREA 3 SUB AREA TIME OF CONCENTRATION: min. = 5 min. SUB AREA INPUT DATA Sub Area Name: 4B Total Area (ac): 3.26 Flood Zone: 3 Rainfall Zone: K Storm Frequency (years): 100 Development Type: Commercial Soil Type: 3.00 Percent Impervious: 85 SUB AREA OUTPUT Intensity (in/hr): C Total: Sum Q Segments (cfs): Q Total (cfs): Sum Percent Area (%): Sum of Flow Path Travel Times (sec): Time of Concentration (min): DATA FOR FLOW PATH 1 Flow Path Name: Overland FLOW PATH TRAVEL TIME (min): Flow Type: Overland Length (ft): 200 Top Elevation (ft): 735 Bottom Elevation (ft): Contributing Area (acres): 0.24 Percent of Sub-Area (%): 7.4 Overland Type: Valley Development Type: Undeveloped Map Slope: Effective Slope: Q for Flow Path (cfs): 1.14 Avg Velocity (ft/s): 0.81 Passed Scour Check: YES Scour Velocity (ft/sec): 1.72 DATA FOR FLOW PATH 2 Flow Path Name: Pipe FLOW PATH TRAVEL TIME (min):

81 Flow Type: Pipe Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 3.02 Percent of Sub-Area (%): 92.6 Initial Pipe Diameter (in): 18 Calculated Pipe Diameter (in): 24 Used Pipe Diameter (in): 24 Manning's N: Map Slope: Q for Flow Path (cfs): Q Top (cfs): 1.14 Q Bottom (cfs): Avg Velocity (ft/s): 5.49 Wave Velocity (ft/s): 7.39 DATA FOR FLOW PATH 3 Flow Path Name: Pipe2 FLOW PATH TRAVEL TIME (min): Flow Type: Pipe Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 0 Percent of Sub-Area (%): 0.0 Initial Pipe Diameter (in): 24 Calculated Pipe Diameter (in): 18 Used Pipe Diameter (in): 24 Manning's N: Map Slope: Q for Flow Path (cfs): 0.00 Q Top (cfs): Q Bottom (cfs): Avg Velocity (ft/s): 7.82 Wave Velocity (ft/s):

82 Project: TT 5937 Date: 12:00:00 AM Engineer: BJS Consultant: Hunsaker Sub-Area Name: 6C Tc: Minutes DATA FOR SUB AREA 4 SUB AREA TIME OF CONCENTRATION: min. = 5 min. SUB AREA INPUT DATA Sub Area Name: 6C Total Area (ac): 3.41 Flood Zone: 3 Rainfall Zone: K Storm Frequency (years): 100 Development Type: Residential Soil Type: 3.00 Percent Impervious: 79 SUB AREA OUTPUT Intensity (in/hr): C Total: Sum Q Segments (cfs): Q Total (cfs): Sum Percent Area (%): Sum of Flow Path Travel Times (sec): Time of Concentration (min): DATA FOR FLOW PATH 1 Flow Path Name: Overland FLOW PATH TRAVEL TIME (min): Flow Type: Overland Length (ft): Top Elevation (ft): Bottom Elevation (ft): Contributing Area (acres): 0.1 Percent of Sub-Area (%): 2.9 Overland Type: Valley Development Type: Residential Map Slope: Effective Slope: Q for Flow Path (cfs): 0.47 Avg Velocity (ft/s): 0.80 Passed Scour Check: N/A DATA FOR FLOW PATH 2 Flow Path Name: Pipe FLOW PATH TRAVEL TIME (min): Flow Type: Pipe 302

83 Length (ft): Top Elevation (ft): 729 Bottom Elevation (ft): Contributing Area (acres): 1.83 Percent of Sub-Area (%): 53.7 Initial Pipe Diameter (in): 24 Calculated Pipe Diameter (in): 15 Used Pipe Diameter (in): 24 Manning's N: Map Slope: Q for Flow Path (cfs): 8.65 Q Top (cfs): 0.47 Q Bottom (cfs): 9.13 Avg Velocity (ft/s): 3.14 Wave Velocity (ft/s): 4.19 DATA FOR FLOW PATH 3 Flow Path Name: Street FLOW PATH TRAVEL TIME (min): Flow Type: Street Length (ft): Top Elevation (ft): Bottom Elevation (ft): 733 Contributing Area (acres): 1.48 Percent of Sub-Area (%): 43.4 Street Width (ft): 32 Curb Height (in): 6 Map Slope: Q for Flow Path (cfs): 7.00 Q Top (cfs): 9.13 Q Bottom (cfs): Velocity Top (ft/s): 2.80 Velocity Bottom (ft/s): 3.23 Avg Velocity (ft/s): 3.02 Wave Velocity (ft/s):

84 \ VCRAT CALCULATIONS 304

85 \ 10-YEAR STORM (UNMITIGATED) 305

86 Ventura County Watershed Protection District Modified Rational Model Results Report Project Description VCRat version: VCRain version: DOS EXE version: PC F:\0924\Engineering\SY_Hydrology\VCRAT\TTM R.out

87 307 Ventura County Watershed Protection District Page: 2 Model Results SUBAREA DATA AND RESULTS ACCUMULATED DATA ROUTING AFTER ACCUMULATION NODE SOIL RAIN TC % AREA FLOW AREA FLOW TIME CHANNEL LENGTH SLOPE SIZE H:V N VALUES VEL DEPTH ID TYPE ZONE (MIN) IMP (AC) (CFS) (AC) (CFS) (MIN) TYPE (FT) (FT/FT) (FT) (Z) CHNL SIDES (FT/S) (FT) A 030 K PIPE B 030 K C 030 K BC ********************************************************************************************************** * Peak in B: min Q in C: cfs Combined Q: cfs * * Peak in C: min Q in B: cfs Combined Q: cfs * * Combined Peak: min Q in B: cfs Q in C: cfs * ********************************************************************************************************** 4BC PIPE AB ********************************************************************************************************** * Peak in A: min Q in B: cfs Combined Q: cfs * * Peak in B: min Q in A: cfs Combined Q: cfs * * Combined Peak: min Q in A: cfs Q in B: cfs * ********************************************************************************************************** 5AB PIPE D 030 K PIPE AD ********************************************************************************************************** * Peak in A: min Q in D: cfs Combined Q: cfs * * Peak in D: min Q in A: cfs Combined Q: cfs * * Combined Peak: min Q in A: cfs Q in D: cfs * ********************************************************************************************************** 7AD Issue/Warning Messages TYPE ERR NO PROCEDURE LOCATION MESSAGE NO ISSUES OR WARNINGS DETECTED F:\0924\Engineering\SY_Hydrology\VCRAT\TTM R.out

88 Ventura County Watershed Protection District Page: 3 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 7AD TOTAL AREA TO HYDROGRAPH: 378 acres HYDROGRAPH PEAK: 850 cfs TIME OF PEAK: 1156 minutes HYDROGRAPH VOLUME: acre-ft 308 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM R.out

89 Ventura County Watershed Protection District Page: 4 VCRat Model Input Model Lines A Header place holder ADHeader place holder A K G B K C K BC010 J AB010 J D K AD010 J F:\0924\Engineering\SY_Hydrology\VCRAT\TTM R.out

90 \ 25-YEAR STORM (UNMITIGATED) 310

91 Ventura County Watershed Protection District Modified Rational Model Results Report Project Description VCRat version: VCRain version: DOS EXE version: PC F:\0924\Engineering\SY_Hydrology\VCRAT\TTM R.out

92 312 Ventura County Watershed Protection District Page: 2 Model Results SUBAREA DATA AND RESULTS ACCUMULATED DATA ROUTING AFTER ACCUMULATION NODE SOIL RAIN TC % AREA FLOW AREA FLOW TIME CHANNEL LENGTH SLOPE SIZE H:V N VALUES VEL DEPTH ID TYPE ZONE (MIN) IMP (AC) (CFS) (AC) (CFS) (MIN) TYPE (FT) (FT/FT) (FT) (Z) CHNL SIDES (FT/S) (FT) A 030 K PIPE B 030 K C 030 K BC ********************************************************************************************************** * Peak in B: min Q in C: cfs Combined Q: cfs * * Peak in C: min Q in B: cfs Combined Q: cfs * * Combined Peak: min Q in B: cfs Q in C: cfs * ********************************************************************************************************** 4BC PIPE AB ********************************************************************************************************** * Peak in A: min Q in B: cfs Combined Q: cfs * * Peak in B: min Q in A: cfs Combined Q: cfs * * Combined Peak: min Q in A: cfs Q in B: cfs * ********************************************************************************************************** 5AB #CHANNEL D 030 K PIPE AD ********************************************************************************************************** * Peak in A: min Q in D: cfs Combined Q: cfs * * Peak in D: min Q in A: cfs Combined Q: cfs * * Combined Peak: min Q in A: cfs Q in D: cfs * ********************************************************************************************************** 7AD Issue/Warning Messages TYPE ERR NO PROCEDURE LOCATION MESSAGE NO ISSUES OR WARNINGS DETECTED F:\0924\Engineering\SY_Hydrology\VCRAT\TTM R.out

93 Ventura County Watershed Protection District Page: 3 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 7AD TOTAL AREA TO HYDROGRAPH: 378 acres HYDROGRAPH PEAK: 1058 cfs TIME OF PEAK: 1156 minutes HYDROGRAPH VOLUME: acre-ft 313 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM R.out

94 Ventura County Watershed Protection District Page: 4 VCRat Model Input Model Lines A Header place holder ADHeader place holder A K G B K C K BC010 J AB010 J D K AD010 J F:\0924\Engineering\SY_Hydrology\VCRAT\TTM R.out

95 \ 50-YEAR STORM (UNMITIGATED) 315

96 Ventura County Watershed Protection District Modified Rational Model Results Report Project Description VCRat version: VCRain version: DOS EXE version: PC F:\0924\Engineering\SY_Hydrology\VCRAT\TTM R.out

97 317 Ventura County Watershed Protection District Page: 2 Model Results SUBAREA DATA AND RESULTS ACCUMULATED DATA ROUTING AFTER ACCUMULATION NODE SOIL RAIN TC % AREA FLOW AREA FLOW TIME CHANNEL LENGTH SLOPE SIZE H:V N VALUES VEL DEPTH ID TYPE ZONE (MIN) IMP (AC) (CFS) (AC) (CFS) (MIN) TYPE (FT) (FT/FT) (FT) (Z) CHNL SIDES (FT/S) (FT) A 030 K PIPE B 030 K C 030 K BC ********************************************************************************************************** * Peak in B: min Q in C: cfs Combined Q: cfs * * Peak in C: min Q in B: cfs Combined Q: cfs * * Combined Peak: min Q in B: cfs Q in C: cfs * ********************************************************************************************************** 4BC PIPE AB ********************************************************************************************************** * Peak in A: min Q in B: cfs Combined Q: cfs * * Peak in B: min Q in A: cfs Combined Q: cfs * * Combined Peak: min Q in A: cfs Q in B: cfs * ********************************************************************************************************** 5AB #CHANNEL D 030 K PIPE AD ********************************************************************************************************** * Peak in A: min Q in D: cfs Combined Q: cfs * * Peak in D: min Q in A: cfs Combined Q: cfs * * Combined Peak: min Q in A: cfs Q in D: cfs * ********************************************************************************************************** 7AD Issue/Warning Messages TYPE ERR NO PROCEDURE LOCATION MESSAGE NO ISSUES OR WARNINGS DETECTED F:\0924\Engineering\SY_Hydrology\VCRAT\TTM R.out

98 Ventura County Watershed Protection District Page: 3 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 7AD TOTAL AREA TO HYDROGRAPH: 378 acres HYDROGRAPH PEAK: 1224 cfs TIME OF PEAK: 1155 minutes HYDROGRAPH VOLUME: acre-ft 318 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM R.out

99 Ventura County Watershed Protection District Page: 4 VCRat Model Input Model Lines A Header place holder ADHeader place holder A K G B K C K BC010 J AB010 J D K AD010 J F:\0924\Engineering\SY_Hydrology\VCRAT\TTM R.out

100 \ 100-YEAR STORM (UNMITIGATED) 320

101 Ventura County Watershed Protection District Modified Rational Model Results Report Project Description VCRat version: VCRain version: DOS EXE version: PC F:\0924\Engineering\SY_Hydrology\VCRAT\TTM R.out

102 322 Ventura County Watershed Protection District Page: 2 Model Results SUBAREA DATA AND RESULTS ACCUMULATED DATA ROUTING AFTER ACCUMULATION NODE SOIL RAIN TC % AREA FLOW AREA FLOW TIME CHANNEL LENGTH SLOPE SIZE H:V N VALUES VEL DEPTH ID TYPE ZONE (MIN) IMP (AC) (CFS) (AC) (CFS) (MIN) TYPE (FT) (FT/FT) (FT) (Z) CHNL SIDES (FT/S) (FT) A 030 K PIPE B 030 K C 030 K BC ********************************************************************************************************** * Peak in B: min Q in C: cfs Combined Q: cfs * * Peak in C: min Q in B: cfs Combined Q: cfs * * Combined Peak: min Q in B: cfs Q in C: cfs * ********************************************************************************************************** 4BC PIPE AB ********************************************************************************************************** * Peak in A: min Q in B: cfs Combined Q: cfs * * Peak in B: min Q in A: cfs Combined Q: cfs * * Combined Peak: min Q in A: cfs Q in B: cfs * ********************************************************************************************************** 5AB #CHANNEL D 030 K PIPE AD ********************************************************************************************************** * Peak in A: min Q in D: cfs Combined Q: cfs * * Peak in D: min Q in A: cfs Combined Q: cfs * * Combined Peak: min Q in A: cfs Q in D: cfs * ********************************************************************************************************** 7AD Issue/Warning Messages TYPE ERR NO PROCEDURE LOCATION MESSAGE NO ISSUES OR WARNINGS DETECTED F:\0924\Engineering\SY_Hydrology\VCRAT\TTM R.out

103 Ventura County Watershed Protection District Page: 3 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 7AD TOTAL AREA TO HYDROGRAPH: 378 acres HYDROGRAPH PEAK: 1539 cfs TIME OF PEAK: 1155 minutes HYDROGRAPH VOLUME: acre-ft 323 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM R.out

104 Ventura County Watershed Protection District Page: 4 VCRat Model Input Model Lines A Header place holder ADHeader place holder A B G B B C B BC010 A AB010 A D B AD010 A F:\0924\Engineering\SY_Hydrology\VCRAT\TTM R.out

105 \ 10-YEAR STORM (MITIGATED) 325

106 Ventura County Watershed Protection District Modified Rational Model Results Report Project Description VCRat version: VCRain version: DOS EXE version: PC F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

107 327 Ventura County Watershed Protection District Page: 2 Model Results SUBAREA DATA AND RESULTS ACCUMULATED DATA ROUTING AFTER ACCUMULATION NODE SOIL RAIN TC % AREA FLOW AREA FLOW TIME CHANNEL LENGTH SLOPE SIZE H:V N VALUES VEL DEPTH ID TYPE ZONE (MIN) IMP (AC) (CFS) (AC) (CFS) (MIN) TYPE (FT) (FT/FT) (FT) (Z) CHNL SIDES (FT/S) (FT) A 030 K A ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 2.92 TOTAL RAIN(in): 4.00 SCS Curve: 90 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** 2A AE: Control/Diversion: Up to 160cfs to channel A ********************************************************************************************************** * Combined Peak: min Q in A: cfs Q in E: cfs * * Peak in A: min Q in E: cfs Combined Q: cfs * * Peak in E: min Q in A: cfs Combined Q: cfs * ********************************************************************************************************** 3AE PIPE B 030 K B ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 3.22 TOTAL RAIN(in): 4.00 SCS Curve: 93 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** 5B C 030 K C ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 2.92 TOTAL RAIN(in): 4.00 SCS Curve: 90 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** 7C BC ********************************************************************************************************** * Peak in B: min Q in C: cfs Combined Q: cfs * * Peak in C: min Q in B: cfs Combined Q: cfs * * Combined Peak: min Q in B: cfs Q in C: cfs * ********************************************************************************************************** 8BC BF: Control/Diversion: Up to 180cfs to channel B 9BF PIPE AB ********************************************************************************************************** * Peak in A: min Q in B: cfs Combined Q: cfs * * Peak in B: min Q in A: cfs Combined Q: cfs * * Combined Peak: min Q in A: cfs Q in B: cfs * ********************************************************************************************************** 10AB PIPE D 030 K F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

108 Ventura County Watershed Protection District Page: 3 Model Results SUBAREA DATA AND RESULTS ACCUMULATED DATA ROUTING AFTER ACCUMULATION NODE SOIL RAIN TC % AREA FLOW AREA FLOW TIME CHANNEL LENGTH SLOPE SIZE H:V N VALUES VEL DEPTH ID TYPE ZONE (MIN) IMP (AC) (CFS) (AC) (CFS) (MIN) TYPE (FT) (FT/FT) (FT) (Z) CHNL SIDES (FT/S) (FT) D ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 2.92 TOTAL RAIN(in): 4.00 SCS Curve: 90 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** 12D DE: Control/Diversion: Up to 180cfs to channel D 13DE PIPE AD ********************************************************************************************************** * Peak in A: min Q in D: cfs Combined Q: cfs * * Peak in D: min Q in A: cfs Combined Q: cfs * * Combined Peak: min Q in A: cfs Q in D: cfs * ********************************************************************************************************** 14AD Issue/Warning Messages TYPE ERR NO PROCEDURE LOCATION MESSAGE Warning Err1260 FATTENING 2A Fattening reduced the volume of the hydrograph. It is recommended to remove fattening from the model. Warning Err1260 FATTENING 5B Fattening reduced the volume of the hydrograph. It is recommended to remove fattening from the model. Warning Err1260 FATTENING 7C Fattening reduced the volume of the hydrograph. It is recommended to remove fattening from the model. Warning Err1260 FATTENING 12D Fattening reduced the volume of the hydrograph. It is recommended to remove fattening from the model. -- HYDROGRAPH FATTENED AT 2A -- ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 2.92 TOTAL RAIN(in): 4.00 SCS Curve: 90 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

109 Ventura County Watershed Protection District Page: 4 Hydrograph Printouts 329 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

110 Ventura County Watershed Protection District Page: 5 Hydrograph Printouts 330 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

111 Ventura County Watershed Protection District Page: 6 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 3A TOTAL AREA TO HYDROGRAPH: 118 acres HYDROGRAPH PEAK: 160 cfs TIME OF PEAK: 1151 minutes HYDROGRAPH VOLUME: acre-ft 331 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

112 Ventura County Watershed Protection District Page: 7 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 3E TOTAL AREA TO HYDROGRAPH: 0 acres HYDROGRAPH PEAK: 128 cfs TIME OF PEAK: 1154 minutes HYDROGRAPH VOLUME: 1.17 acre-ft 332 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

113 Ventura County Watershed Protection District Page: 8 Hydrograph Printouts -- HYDROGRAPH FATTENED AT 5B -- ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 3.22 TOTAL RAIN(in): 4.00 SCS Curve: 93 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** 333 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

114 Ventura County Watershed Protection District Page: 9 Hydrograph Printouts 334 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

115 Ventura County Watershed Protection District Page: 10 Hydrograph Printouts TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) HYDROGRAPH FATTENED AT 7C -- ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 2.92 TOTAL RAIN(in): 4.00 SCS Curve: 90 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

116 Ventura County Watershed Protection District Page: 11 Hydrograph Printouts 336 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

117 Ventura County Watershed Protection District Page: 12 Hydrograph Printouts 337 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

118 Ventura County Watershed Protection District Page: 13 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 9B TOTAL AREA TO HYDROGRAPH: 134 acres HYDROGRAPH PEAK: 180 cfs TIME OF PEAK: 1151 minutes HYDROGRAPH VOLUME: acre-ft 338 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

119 Ventura County Watershed Protection District Page: 14 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 9F TOTAL AREA TO HYDROGRAPH: 0 acres HYDROGRAPH PEAK: 129 cfs TIME OF PEAK: 1154 minutes HYDROGRAPH VOLUME: 1.31 acre-ft 339 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

120 Ventura County Watershed Protection District Page: 15 Hydrograph Printouts -- HYDROGRAPH FATTENED AT 12D -- ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 2.92 TOTAL RAIN(in): 4.00 SCS Curve: 90 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** 340 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

121 Ventura County Watershed Protection District Page: 16 Hydrograph Printouts 341 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

122 Ventura County Watershed Protection District Page: 17 Hydrograph Printouts TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

123 Ventura County Watershed Protection District Page: 18 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 13D TOTAL AREA TO HYDROGRAPH: 126 acres HYDROGRAPH PEAK: 180 cfs TIME OF PEAK: 1152 minutes HYDROGRAPH VOLUME: acre-ft 343 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

124 Ventura County Watershed Protection District Page: 19 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 13E TOTAL AREA TO HYDROGRAPH: 0 acres HYDROGRAPH PEAK: 93 cfs TIME OF PEAK: 1154 minutes HYDROGRAPH VOLUME: 0.98 acre-ft 344 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

125 Ventura County Watershed Protection District Page: 20 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 14AD TOTAL AREA TO HYDROGRAPH: 378 acres HYDROGRAPH PEAK: 520 cfs TIME OF PEAK: 1160 minutes HYDROGRAPH VOLUME: acre-ft 345 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

126 346 Ventura County Watershed Protection District Page: 21 VCRat Model Input Model Lines A Header place holder A Header place holder AEHeader place holder E Split Header place holder B Header place holder C Header place holder BFHeader place holder F Split Header place holder D Header place holder DEHeader place holder E Split Header place holder ADHeader place holder A K10 G A J AE010 J E J B K B J C K C J BC010 J BF010 J F J AB010 J D K D J DE010 J E J AD010 J F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

127 \ 25-YEAR STORM (MITIGATED) 347

128 Ventura County Watershed Protection District Modified Rational Model Results Report Project Description VCRat version: VCRain version: DOS EXE version: PC F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

129 349 Ventura County Watershed Protection District Page: 2 Model Results SUBAREA DATA AND RESULTS ACCUMULATED DATA ROUTING AFTER ACCUMULATION NODE SOIL RAIN TC % AREA FLOW AREA FLOW TIME CHANNEL LENGTH SLOPE SIZE H:V N VALUES VEL DEPTH ID TYPE ZONE (MIN) IMP (AC) (CFS) (AC) (CFS) (MIN) TYPE (FT) (FT/FT) (FT) (Z) CHNL SIDES (FT/S) (FT) A 030 K A ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 3.68 TOTAL RAIN(in): 4.80 SCS Curve: 90 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** 2A AE: Control/Diversion: Up to 160cfs to channel A ********************************************************************************************************** * Combined Peak: min Q in A: cfs Q in E: cfs * * Peak in A: min Q in E: cfs Combined Q: cfs * * Peak in E: min Q in A: cfs Combined Q: cfs * ********************************************************************************************************** 3AE PIPE B 030 K B ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 4.00 TOTAL RAIN(in): 4.80 SCS Curve: 93 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** 5B C 030 K C ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 3.68 TOTAL RAIN(in): 4.80 SCS Curve: 90 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** 7C BC ********************************************************************************************************** * Peak in B: min Q in C: cfs Combined Q: cfs * * Peak in C: min Q in B: cfs Combined Q: cfs * * Combined Peak: min Q in B: cfs Q in C: cfs * ********************************************************************************************************** 8BC BF: Control/Diversion: Up to 180cfs to channel B 9BF PIPE AB ********************************************************************************************************** * Peak in A: min Q in B: cfs Combined Q: cfs * * Peak in B: min Q in A: cfs Combined Q: cfs * * Combined Peak: min Q in A: cfs Q in B: cfs * ********************************************************************************************************** 10AB PIPE D 030 K F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

130 Ventura County Watershed Protection District Page: 3 Model Results SUBAREA DATA AND RESULTS ACCUMULATED DATA ROUTING AFTER ACCUMULATION NODE SOIL RAIN TC % AREA FLOW AREA FLOW TIME CHANNEL LENGTH SLOPE SIZE H:V N VALUES VEL DEPTH ID TYPE ZONE (MIN) IMP (AC) (CFS) (AC) (CFS) (MIN) TYPE (FT) (FT/FT) (FT) (Z) CHNL SIDES (FT/S) (FT) D ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 3.68 TOTAL RAIN(in): 4.80 SCS Curve: 90 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** 12D DE: Control/Diversion: Up to 180cfs to channel D 13DE PIPE AD ********************************************************************************************************** * Peak in A: min Q in D: cfs Combined Q: cfs * * Peak in D: min Q in A: cfs Combined Q: cfs * * Combined Peak: min Q in A: cfs Q in D: cfs * ********************************************************************************************************** 14AD Issue/Warning Messages TYPE ERR NO PROCEDURE LOCATION MESSAGE Warning Err1260 FATTENING 2A Fattening reduced the volume of the hydrograph. It is recommended to remove fattening from the model. Warning Err1260 FATTENING 5B Fattening reduced the volume of the hydrograph. It is recommended to remove fattening from the model. Warning Err1260 FATTENING 7C Fattening reduced the volume of the hydrograph. It is recommended to remove fattening from the model. Warning Err1260 FATTENING 12D Fattening reduced the volume of the hydrograph. It is recommended to remove fattening from the model. -- HYDROGRAPH FATTENED AT 2A -- ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 3.68 TOTAL RAIN(in): 4.80 SCS Curve: 90 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

131 Ventura County Watershed Protection District Page: 4 Hydrograph Printouts 351 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

132 Ventura County Watershed Protection District Page: 5 Hydrograph Printouts 352 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

133 Ventura County Watershed Protection District Page: 6 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 3A TOTAL AREA TO HYDROGRAPH: 118 acres HYDROGRAPH PEAK: 160 cfs TIME OF PEAK: 1150 minutes HYDROGRAPH VOLUME: acre-ft 353 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

134 Ventura County Watershed Protection District Page: 7 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 3E TOTAL AREA TO HYDROGRAPH: 0 acres HYDROGRAPH PEAK: 185 cfs TIME OF PEAK: 1154 minutes HYDROGRAPH VOLUME: 1.61 acre-ft 354 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

135 Ventura County Watershed Protection District Page: 8 Hydrograph Printouts -- HYDROGRAPH FATTENED AT 5B -- ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 4.00 TOTAL RAIN(in): 4.80 SCS Curve: 93 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** 355 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

136 Ventura County Watershed Protection District Page: 9 Hydrograph Printouts 356 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

137 Ventura County Watershed Protection District Page: 10 Hydrograph Printouts TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) HYDROGRAPH FATTENED AT 7C -- ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 3.68 TOTAL RAIN(in): 4.80 SCS Curve: 90 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

138 Ventura County Watershed Protection District Page: 11 Hydrograph Printouts 358 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

139 Ventura County Watershed Protection District Page: 12 Hydrograph Printouts 359 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

140 Ventura County Watershed Protection District Page: 13 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 9B TOTAL AREA TO HYDROGRAPH: 134 acres HYDROGRAPH PEAK: 180 cfs TIME OF PEAK: 1150 minutes HYDROGRAPH VOLUME: acre-ft 360 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

141 Ventura County Watershed Protection District Page: 14 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 9F TOTAL AREA TO HYDROGRAPH: 0 acres HYDROGRAPH PEAK: 231 cfs TIME OF PEAK: 1154 minutes HYDROGRAPH VOLUME: 1.90 acre-ft 361 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

142 Ventura County Watershed Protection District Page: 15 Hydrograph Printouts -- HYDROGRAPH FATTENED AT 12D -- ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 3.68 TOTAL RAIN(in): 4.80 SCS Curve: 90 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** 362 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

143 Ventura County Watershed Protection District Page: 16 Hydrograph Printouts 363 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

144 Ventura County Watershed Protection District Page: 17 Hydrograph Printouts TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

145 Ventura County Watershed Protection District Page: 18 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 13D TOTAL AREA TO HYDROGRAPH: 126 acres HYDROGRAPH PEAK: 180 cfs TIME OF PEAK: 1150 minutes HYDROGRAPH VOLUME: acre-ft 365 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

146 Ventura County Watershed Protection District Page: 19 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 13E TOTAL AREA TO HYDROGRAPH: 0 acres HYDROGRAPH PEAK: 142 cfs TIME OF PEAK: 1154 minutes HYDROGRAPH VOLUME: 1.46 acre-ft 366 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

147 Ventura County Watershed Protection District Page: 20 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 14AD TOTAL AREA TO HYDROGRAPH: 378 acres HYDROGRAPH PEAK: 520 cfs TIME OF PEAK: 1159 minutes HYDROGRAPH VOLUME: acre-ft 367 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

148 368 Ventura County Watershed Protection District Page: 21 VCRat Model Input Model Lines A Header place holder A Header place holder AEHeader place holder E Split Header place holder B Header place holder C Header place holder BFHeader place holder F Split Header place holder D Header place holder DEHeader place holder E Split Header place holder ADHeader place holder A K25 G A J AE010 J E J B K B J C K C J BC010 J BF010 J F J AB010 J D K D J DE010 J E J AD010 J F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

149 \ 50-YEAR STORM (MITIGATED) 369

150 Ventura County Watershed Protection District Modified Rational Model Results Report Project Description VCRat version: VCRain version: DOS EXE version: PC F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

151 371 Ventura County Watershed Protection District Page: 2 Model Results SUBAREA DATA AND RESULTS ACCUMULATED DATA ROUTING AFTER ACCUMULATION NODE SOIL RAIN TC % AREA FLOW AREA FLOW TIME CHANNEL LENGTH SLOPE SIZE H:V N VALUES VEL DEPTH ID TYPE ZONE (MIN) IMP (AC) (CFS) (AC) (CFS) (MIN) TYPE (FT) (FT/FT) (FT) (Z) CHNL SIDES (FT/S) (FT) A 030 K A ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 4.26 TOTAL RAIN(in): 5.40 SCS Curve: 90 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** 2A AE: Control/Diversion: Up to 160cfs to channel A ********************************************************************************************************** * Combined Peak: min Q in A: cfs Q in E: cfs * * Peak in A: min Q in E: cfs Combined Q: cfs * * Peak in E: min Q in A: cfs Combined Q: cfs * ********************************************************************************************************** 3AE PIPE B 030 K B ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 4.59 TOTAL RAIN(in): 5.40 SCS Curve: 93 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** 5B C 030 K C ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 4.26 TOTAL RAIN(in): 5.40 SCS Curve: 90 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** 7C BC ********************************************************************************************************** * Peak in B: min Q in C: cfs Combined Q: cfs * * Peak in C: min Q in B: cfs Combined Q: cfs * * Combined Peak: min Q in B: cfs Q in C: cfs * ********************************************************************************************************** 8BC BF: Control/Diversion: Up to 180cfs to channel B 9BF PIPE AB ********************************************************************************************************** * Peak in A: min Q in B: cfs Combined Q: cfs * * Peak in B: min Q in A: cfs Combined Q: cfs * * Combined Peak: min Q in A: cfs Q in B: cfs * ********************************************************************************************************** 10AB PIPE D 030 K F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

152 Ventura County Watershed Protection District Page: 3 Model Results SUBAREA DATA AND RESULTS ACCUMULATED DATA ROUTING AFTER ACCUMULATION NODE SOIL RAIN TC % AREA FLOW AREA FLOW TIME CHANNEL LENGTH SLOPE SIZE H:V N VALUES VEL DEPTH ID TYPE ZONE (MIN) IMP (AC) (CFS) (AC) (CFS) (MIN) TYPE (FT) (FT/FT) (FT) (Z) CHNL SIDES (FT/S) (FT) D ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 4.26 TOTAL RAIN(in): 5.40 SCS Curve: 90 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** 12D DE: Control/Diversion: Up to 180cfs to channel D 13DE PIPE AD ********************************************************************************************************** * Peak in A: min Q in D: cfs Combined Q: cfs * * Peak in D: min Q in A: cfs Combined Q: cfs * * Combined Peak: min Q in A: cfs Q in D: cfs * ********************************************************************************************************** 14AD Issue/Warning Messages TYPE ERR NO PROCEDURE LOCATION MESSAGE Warning Err1260 FATTENING 2A Fattening reduced the volume of the hydrograph. It is recommended to remove fattening from the model. Warning Err1260 FATTENING 5B Fattening reduced the volume of the hydrograph. It is recommended to remove fattening from the model. Warning Err1260 FATTENING 7C Fattening reduced the volume of the hydrograph. It is recommended to remove fattening from the model. Warning Err1260 FATTENING 12D Fattening reduced the volume of the hydrograph. It is recommended to remove fattening from the model. -- HYDROGRAPH FATTENED AT 2A -- ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 4.26 TOTAL RAIN(in): 5.40 SCS Curve: 90 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

153 Ventura County Watershed Protection District Page: 4 Hydrograph Printouts 373 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

154 Ventura County Watershed Protection District Page: 5 Hydrograph Printouts 374 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

155 Ventura County Watershed Protection District Page: 6 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 3A TOTAL AREA TO HYDROGRAPH: 118 acres HYDROGRAPH PEAK: 160 cfs TIME OF PEAK: 1150 minutes HYDROGRAPH VOLUME: acre-ft 375 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

156 Ventura County Watershed Protection District Page: 7 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 3E TOTAL AREA TO HYDROGRAPH: 0 acres HYDROGRAPH PEAK: 250 cfs TIME OF PEAK: 1153 minutes HYDROGRAPH VOLUME: 2.06 acre-ft 376 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

157 Ventura County Watershed Protection District Page: 8 Hydrograph Printouts -- HYDROGRAPH FATTENED AT 5B -- ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 4.59 TOTAL RAIN(in): 5.40 SCS Curve: 93 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** 377 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

158 Ventura County Watershed Protection District Page: 9 Hydrograph Printouts 378 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

159 Ventura County Watershed Protection District Page: 10 Hydrograph Printouts TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) HYDROGRAPH FATTENED AT 7C -- ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 4.26 TOTAL RAIN(in): 5.40 SCS Curve: 90 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

160 Ventura County Watershed Protection District Page: 11 Hydrograph Printouts 380 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

161 Ventura County Watershed Protection District Page: 12 Hydrograph Printouts 381 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

162 Ventura County Watershed Protection District Page: 13 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 9B TOTAL AREA TO HYDROGRAPH: 134 acres HYDROGRAPH PEAK: 180 cfs TIME OF PEAK: 1150 minutes HYDROGRAPH VOLUME: acre-ft 382 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

163 Ventura County Watershed Protection District Page: 14 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 9F TOTAL AREA TO HYDROGRAPH: 0 acres HYDROGRAPH PEAK: 287 cfs TIME OF PEAK: 1153 minutes HYDROGRAPH VOLUME: 2.39 acre-ft 383 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

164 Ventura County Watershed Protection District Page: 15 Hydrograph Printouts -- HYDROGRAPH FATTENED AT 12D -- ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 4.26 TOTAL RAIN(in): 5.40 SCS Curve: 90 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** 384 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

165 Ventura County Watershed Protection District Page: 16 Hydrograph Printouts 385 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

166 Ventura County Watershed Protection District Page: 17 Hydrograph Printouts TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

167 Ventura County Watershed Protection District Page: 18 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 13D TOTAL AREA TO HYDROGRAPH: 126 acres HYDROGRAPH PEAK: 180 cfs TIME OF PEAK: 1151 minutes HYDROGRAPH VOLUME: acre-ft 387 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

168 Ventura County Watershed Protection District Page: 19 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 13E TOTAL AREA TO HYDROGRAPH: 0 acres HYDROGRAPH PEAK: 205 cfs TIME OF PEAK: 1154 minutes HYDROGRAPH VOLUME: 2.01 acre-ft 388 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

169 Ventura County Watershed Protection District Page: 20 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 14AD TOTAL AREA TO HYDROGRAPH: 378 acres HYDROGRAPH PEAK: 520 cfs TIME OF PEAK: 1158 minutes HYDROGRAPH VOLUME: acre-ft 389 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

170 390 Ventura County Watershed Protection District Page: 21 VCRat Model Input Model Lines A Header place holder A Header place holder AEHeader place holder E Split Header place holder B Header place holder C Header place holder BFHeader place holder F Split Header place holder D Header place holder DEHeader place holder E Split Header place holder ADHeader place holder A K50 G A J AE010 J E J B K B J C K C J BC010 J BF010 J F J AB010 J D K D J DE010 J E J AD010 J F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

171 \ 100-YEAR STORM (MITIGATED) 391

172 Ventura County Watershed Protection District Modified Rational Model Results Report Project Description VCRat version: VCRain version: DOS EXE version: PC F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

173 393 Ventura County Watershed Protection District Page: 2 Model Results SUBAREA DATA AND RESULTS ACCUMULATED DATA ROUTING AFTER ACCUMULATION NODE SOIL RAIN TC % AREA FLOW AREA FLOW TIME CHANNEL LENGTH SLOPE SIZE H:V N VALUES VEL DEPTH ID TYPE ZONE (MIN) IMP (AC) (CFS) (AC) (CFS) (MIN) TYPE (FT) (FT/FT) (FT) (Z) CHNL SIDES (FT/S) (FT) A 030 K A ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 4.85 TOTAL RAIN(in): 6.00 SCS Curve: 90 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** 2A AE: Control/Diversion: Up to 160cfs to channel A ********************************************************************************************************** * Combined Peak: min Q in A: cfs Q in E: cfs * * Peak in A: min Q in E: cfs Combined Q: cfs * * Peak in E: min Q in A: cfs Combined Q: cfs * ********************************************************************************************************** 3AE PIPE B 030 K B ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 5.18 TOTAL RAIN(in): 6.00 SCS Curve: 93 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** 5B C 030 K C ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 4.85 TOTAL RAIN(in): 6.00 SCS Curve: 90 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** 7C BC ********************************************************************************************************** * Peak in B: min Q in C: cfs Combined Q: cfs * * Peak in C: min Q in B: cfs Combined Q: cfs * * Combined Peak: min Q in B: cfs Q in C: cfs * ********************************************************************************************************** 8BC BF: Control/Diversion: Up to 180cfs to channel B 9BF PIPE AB ********************************************************************************************************** * Peak in A: min Q in B: cfs Combined Q: cfs * * Peak in B: min Q in A: cfs Combined Q: cfs * * Combined Peak: min Q in A: cfs Q in B: cfs * ********************************************************************************************************** 10AB PIPE D 030 K F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

174 Ventura County Watershed Protection District Page: 3 Model Results SUBAREA DATA AND RESULTS ACCUMULATED DATA ROUTING AFTER ACCUMULATION NODE SOIL RAIN TC % AREA FLOW AREA FLOW TIME CHANNEL LENGTH SLOPE SIZE H:V N VALUES VEL DEPTH ID TYPE ZONE (MIN) IMP (AC) (CFS) (AC) (CFS) (MIN) TYPE (FT) (FT/FT) (FT) (Z) CHNL SIDES (FT/S) (FT) D ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 4.85 TOTAL RAIN(in): 6.00 SCS Curve: 90 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** 12D DE: Control/Diversion: Up to 180cfs to channel D 13DE PIPE AD ********************************************************************************************************** * Peak in A: min Q in D: cfs Combined Q: cfs * * Peak in D: min Q in A: cfs Combined Q: cfs * * Combined Peak: min Q in A: cfs Q in D: cfs * ********************************************************************************************************** 14AD Issue/Warning Messages TYPE ERR NO PROCEDURE LOCATION MESSAGE Warning Err1260 FATTENING 2A Fattening reduced the volume of the hydrograph. It is recommended to remove fattening from the model. Warning Err1260 FATTENING 5B Fattening reduced the volume of the hydrograph. It is recommended to remove fattening from the model. Warning Err1260 FATTENING 7C Fattening reduced the volume of the hydrograph. It is recommended to remove fattening from the model. Warning Err1260 FATTENING 12D Fattening reduced the volume of the hydrograph. It is recommended to remove fattening from the model. -- HYDROGRAPH FATTENED AT 2A -- ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 4.85 TOTAL RAIN(in): 6.00 SCS Curve: 90 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

175 Ventura County Watershed Protection District Page: 4 Hydrograph Printouts 395 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

176 Ventura County Watershed Protection District Page: 5 Hydrograph Printouts 396 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

177 Ventura County Watershed Protection District Page: 6 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 3A TOTAL AREA TO HYDROGRAPH: 118 acres HYDROGRAPH PEAK: 160 cfs TIME OF PEAK: 1149 minutes HYDROGRAPH VOLUME: acre-ft 397 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

178 Ventura County Watershed Protection District Page: 7 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 3E TOTAL AREA TO HYDROGRAPH: 0 acres HYDROGRAPH PEAK: 341 cfs TIME OF PEAK: 1153 minutes HYDROGRAPH VOLUME: 2.44 acre-ft 398 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

179 Ventura County Watershed Protection District Page: 8 Hydrograph Printouts -- HYDROGRAPH FATTENED AT 5B -- ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 5.18 TOTAL RAIN(in): 6.00 SCS Curve: 93 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** 399 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

180 Ventura County Watershed Protection District Page: 9 Hydrograph Printouts 400 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

181 Ventura County Watershed Protection District Page: 10 Hydrograph Printouts TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) HYDROGRAPH FATTENED AT 7C -- ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 4.85 TOTAL RAIN(in): 6.00 SCS Curve: 90 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

182 Ventura County Watershed Protection District Page: 11 Hydrograph Printouts 402 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

183 Ventura County Watershed Protection District Page: 12 Hydrograph Printouts 403 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

184 Ventura County Watershed Protection District Page: 13 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 9B TOTAL AREA TO HYDROGRAPH: 134 acres HYDROGRAPH PEAK: 180 cfs TIME OF PEAK: 1149 minutes HYDROGRAPH VOLUME: acre-ft 404 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

185 Ventura County Watershed Protection District Page: 14 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 9F TOTAL AREA TO HYDROGRAPH: 0 acres HYDROGRAPH PEAK: 456 cfs TIME OF PEAK: 1153 minutes HYDROGRAPH VOLUME: 2.75 acre-ft 405 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

186 Ventura County Watershed Protection District Page: 15 Hydrograph Printouts -- HYDROGRAPH FATTENED AT 12D -- ******************************************************************************************** * INCOMING HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * * NO HYDROGRAPH ADJUSTMENT * * RUNOFF FACTOR(in): 4.85 TOTAL RAIN(in): 6.00 SCS Curve: 90 * * FATTENED HYDROGRAPH PEAK (cfs): VOLUME (acre-ft): * ******************************************************************************************** 406 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

187 Ventura County Watershed Protection District Page: 16 Hydrograph Printouts 407 TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

188 Ventura County Watershed Protection District Page: 17 Hydrograph Printouts TIME PRE-ADJ PRE-FAT FATTENED TIME PRE-ADJ PRE-FAT FATTENED (min) (cfs) (cfs) (cfs) (min) (cfs) (cfs) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

189 Ventura County Watershed Protection District Page: 18 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 13D TOTAL AREA TO HYDROGRAPH: 126 acres HYDROGRAPH PEAK: 180 cfs TIME OF PEAK: 1149 minutes HYDROGRAPH VOLUME: acre-ft 409 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

190 Ventura County Watershed Protection District Page: 19 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 13E TOTAL AREA TO HYDROGRAPH: 0 acres HYDROGRAPH PEAK: 312 cfs TIME OF PEAK: 1153 minutes HYDROGRAPH VOLUME: 2.48 acre-ft 410 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

191 Ventura County Watershed Protection District Page: 20 Hydrograph Printouts HYDROGRAPH PRINTOUT AT: 14AD TOTAL AREA TO HYDROGRAPH: 378 acres HYDROGRAPH PEAK: 520 cfs TIME OF PEAK: 1157 minutes HYDROGRAPH VOLUME: acre-ft 411 TIME FLOW TIME FLOW TIME FLOW TIME FLOW TIME FLOW (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) (min) (cfs) F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

192 412 Ventura County Watershed Protection District Page: 21 VCRat Model Input Model Lines A Header place holder A Header place holder AEHeader place holder E Split Header place holder B Header place holder C Header place holder BFHeader place holder F Split Header place holder D Header place holder DEHeader place holder E Split Header place holder ADHeader place holder A B98 G A A AE010 A E A B B B A C B C A BC010 A BF010 A F A AB010 A D B D A DE010 A E A AD010 A F:\0924\Engineering\SY_Hydrology\VCRAT\TTM Split-R2.out

193 \ HYDROLOGY MAP 413

194 TE SI MB MB MB MB MB MB 414 MB