District-Wide Approach to Water Resource Modeling

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1 District-Wide Approach to Water Resource Modeling Water Resources Conference October 16, 2012 Phil Belfiori, RCWD Chris Otterness, HEI Mike Lawrence, HEI

2 Overview Rice Creek Watershed District Approximately 186 square miles Portions in 28 cities and townships 25 drainage systems, totaling 123 miles Approximately 50 lakes Variety of landscapes from very urban to very rural

3 The Need Updated flood inundation maps and base flood elevations for Regulatory Program Tools to help identify and complete projects in the District Better understanding of how water moves through the District Consistent documentation on survey and modeling to preserve investment far into the future

4 DWMP Overview District Wide Modeling Program (DWMP) Initiated in 2008 after the completion of a document titled District Wide Model Development This document outlined the goals and technical objectives for the DWMP Major goal: to update floodplain mapping and elevations for use in the Regulatory Program To achieve this goal the plan was to create detailed modeling of the entire District and make both the results and inputs readily available

5 Information Management

6 Products Created Modeling Specifications LiDAR and Survey data Hydrologic and Hydraulic Models of entire District Floodplain Mapping HydroViewer

7 Modeling Specifications Specifications were created for different modeling: hydraulic, hydrologic and water quality Standards were created for naming conventions, subwatershed development, requirements on documentation, and provide guidance on model input parameters Standards were developed for collecting survey data

8 Benefits: Specifications Specifications ensure consistency when models are developed by different practitioners Ensures that all data is well documented and can easily be shared with others Maintains investment in the work that was done, by avoiding unnecessary work in the future

9 Survey Geodatabase All survey data stored in consistent format Clearly see who, when, and in what datum the survey points were collected

10 Geo-referenced photos Slowly building a database of photos throughout the District Valuable in many areas of District activity Survey Geodatabase

11 High Resolution Topographic Data LiDAR data collected in 2008 Integrated into web viewers for easy access

12 Hydrologically Conditioned DEM Delineated 1,413 subwatersheds, average size 84 acres

13 Benefits: Survey and Topography Survey Geodatabase Quickly find elevations, culvert sizes, etc. Data are reusable Data are accessible Photos where available All data stored (projects, as-constructed, DWMP) Topography (LiDAR) Always checking elevations (e.g., permitting) Better mapped floodplains Conditioned DEM

14 Hydraulic and Hydrologic Modeling 12 SWMM models for public drainage systems into Rice Creek 2 SWMM models for the direct drainage into Rice Creek HEC-RAS model of Rice Creek

15 SWMM Modeling Used multiple proprietary SWMM models SWMM engine is public domain Very fine scale in some areas, subwatersheds as small as 2 acres Continuous simulation performed

16 Products: Hydraulic Model HEC-RAS model of Rice Creek, using combination of storage areas and crosssections Why HEC-RAS? Ease of modeling open channel flow Ease of flow inputs Viewing of profiles and velocities Ability to model sediment transport in future HEC-DSS used for inputting SWMM results HEC-RAS Model Layout

17 Structure Hydraulics For all structures on the public drainage system in the District. BENEFITS: Information about culverts on public drainage systems is quickly available to District staff. Information about replacing a culvert is available to cities and other entities.

18 Detailed floodplain mapping for public drainage system and Rice Creek Floodplain Mapping Better floodplains because of LiDAR acquisition and new modeling: Example on right is Upper Rice Creek and Crossways Lake Aids in Permitting and Identifies Problem Areas within the District Previous Mapping (Zone A) New Mapping

19 Mapped Floodplains

20 Benefits to Stakeholders: Hydraulics & Floodplains Better information for Permitting FEMA adopted Anoka County Floodplains Base Flood Elevations improve City planning Insurance questions easier to address Ability to very quickly evaluate new issues (e.g., culvert changes) Assessment of conveyance capacity

21 Understanding RCWD Hydrology

22 Understanding RCWD Hydrology

23 Lake Frequency Analysis Updated data 1% chance elevations used to map floodplains Used to verify hydraulics model Daily elevation frequency analysis. Use it to answer is my lake higher on average than normal?

24 Benefits: Hydrology Sources of the models are known Consistent model development and documentation Data for users (RCWD, Cities, others) Improved operational efficiency of District Engineer Use in drainage system repair reports Use in project designs (repairs / Capital Improvement Projects) Better lake level information Maximize project locations Intercommunity flows established

25 Runoff Volumes

26 Phosphorus Yields

27 Benefits: Volumes and Loads Planning level analysis Identify areas with higher runoff volume and yields Use to prioritize locations for implementation projects (e.g., TMDLs) Possible use in volume control analysis

28 HydroViewer very similar to existing Permit Mapper Allows easy access to model inputs and outputs All data shown can be queried Products: HydroViewer

29 Products: HydroViewer, cont. Each Model Node is displayed Each subwatershed can also be shown

30 Maintenance Challenges Need to keep track of changes in the District, otherwise models will be outdated and less useful Maintenance plan developed Product Description Maintenance GIS Library Model Library Survey Geodatabase HydroViewer A data dictionary describing the specific GIS layers, a link to the original data source and the applicable file names, and the actual GIS data. Input data, parameters derived from the input data, modeling reports, the hydrology, hydraulic and water quality models and the model results. Survey information collected through the DWMP, project completion, and public drainage system inspection and repair Modeling input and output data, including estimated peak runoff rates, growing season runoff volumes. Updated continuously as part of the project workflow and permitting processes. Updated continuously as part of the project workflow process and a review of permits with substantive changes in subwatershed boundaries and structures. Updated continuously as part of the project workflow process on a project specific basis. Data will be updated annually.

31 Challenges Spatial scale of analysis: Even though the model is detailed, there are limits to how the results can be used Floodplain mapping not in all areas

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35 Project Costs YEAR 1 $352,576 LiDAR Acquisition Functional Requirements Document Survey Upper Rice Creek Modeling Specifications, Monitoring Plan Hardwood and Clearwater Creek Modeling and Mapping Subwatershed Delineation YEAR 2 $250,000 Modeling and Mapping for Rice Creek, ACD 25, RWJD1 Lake Frequency Analysis Survey of Chain of Lakes, RWJD1, ACD25 Hydrologically correct DEM and Hydro Viewer YEAR 3 $317,000 Modeling and Mapping for RCD 1, 2, 3, 4, 5, and 8, ARJD1, ACD 53-62, Rice Creek Survey of Lower Rice Creek, ARJD1, RCD 1, 2, 3, 4, 5, and 8 Runoff Volume and Pollutant Loading Tool Summary Report Total: $919,576 Probable Budget Range Identified in Functional Requirements Document $1,256,620 to $1,569,196

36 Intercommunity Flows

37 Example Shown: ACD 31 Floodplain Mapping

38 Watershed (Water Quality) Modeling P8 models exist for Hardwood and Clearwater Creek

39 Maintenance Costs Going Forward Product Estimated Annual Maintenance Cost GIS Library None Model Library Survey Geodatabase The estimated maintenance cost assumes approximately 200 permits processed annually, with 25 permits requiring some level of activity at 2 hours per permit. Annual cost $4,000-5,000 per year. None HydroViewer $3,500 for annual maintenance with optional $4,000 to $5,000 GeoMoose open source software upgrade every other year DrainageViewer $3,500 for annual maintenance with optional $4,000 to $5,000 GeoMoose open source software upgrade every other year PermitViewer and Database $4,500 for annual maintenance with optional $4,000 to $5,000 GeoMoose open source software upgrade every other year

40 Contributing Hydrographs at a given location HydroViewer

41 North Dakota Highway 54, Minnesota Highway 1 Flood Mitigation Minnesota Water Resources Conference October 16-17, 2012 Rick Archer, PE

42 Hydraulic Study on I-29, North Dakota Highway 54 and Minnesota Highway 1 near Oslo, Minnesota Red River of the North Walsh County, North Dakota Marshall County, Minnesota Prepared for: North Dakota Department of Transportation Environmental & Transportation Services 608 East Boulevard Avenue Bismarck, North Dakota SS-6-054(007) PCN 18343

43 Background Red River Drainage Basin Formed by glacial Lake Agassiz Headwaters begin at Wahpeton, ND at confluence with Bois de Sioux and Ottertail Rivers Flows North to Canada, ending in Lake Winnipeg Gradient varies (1 to 0.2) feet per mile

44 Background Project Location Oslo, Minnesota 23 miles North of Grand Forks, ND Soo Line RR 200 feet upstream of Hwy 54 North Maris River 1.1 miles west of Red Breakout of Turtle River 1.8 miles upstream North Marias joins Red River 12.9 miles downstream

45 Background Oslo Ring Levee Red River of the North Basin Halstad(M 03/13), East Grand Forks(M 06/13), Oslo(P 03/14), Alvarado(M 03/13), Argyle(M 03/13), Noyes(P), Duxby (Agricultural Levee Downstream of Roseau)(P)

46 Scope of Study Identify current hydraulic conditions of roadway Identify mitigation alternatives to improve hydraulic capacity Objective: Eliminate overtopping of Hwy 54, Mn 1 and I-29 under extreme flood conditions No-Adverse Impact on Regulatory Floodplain Tasks: Hydrology Review USGS stream gaging information USGS regression analyses at identified ungagged river locations Comparative analysis of flow and stage to historical floods Tasks: Hydraulics Incorporate existing and new field surveys and topography data Identify existing road drainage culverts Develop step-backwater analysis of Red River to encompass effective flow limits of project site. Evaluate mitigation alternatives against current hydraulic conditions to assess impacts

47 Project Discovery Historical Floods

48 Project Discovery Historical Floods 1997 Flood (highest since 1826, sandbagging and RR restriction) (topping 1997 by 4 inches, ice) ft (topping 38 feet and 3 rd highest historical) Other Great Floods > 35 feet ( )

49 Rank Date (Peak Flow) Peak Flow (cfs) Peak Stage (ft) Rank Date (Peak Flow) Peak Flow (cfs) Peak Stage (ft) 1 4/23/ /12/ /1/ /21/ /6/ /26/ /21/ /24/ /10/ /10/ /22/ /30/ /4/ /17/ /19/ /20/ Table 2.1 USGS Gage Data at Olso, MN 9 4/12/ /12/ /2/ /30/ /16/ /10/ /17/ /18/ /23/ /25/ /19/ /2/ /1/ /4/ /1/ /6/ /15/ /15/ /22/ /15/ /14/ /10/ /13/ /7/ /29/ /10/ /3/ /5/ /22/ /4/ /7/ /13/

50 Project Discovery Historical Floods 1997 Flood at Oslo, Minnesota

51 Project Discovery Historical Floods 2009 Flood at Oslo, Minnesota (4/14/1009) Looking East

52 Project Discovery Historical Floods 2009 Flood at Oslo, Minnesota (4/14/1009) Looking North

53 Project Discovery Historical Floods 2009 Flood at Oslo, Minnesota (4/14/1009) Looking West

54 Project Discovery 2010 Flood

55 Project Discovery 2010 Flood

56 Project Discovery 2010 Flood

57 Project Discovery 2010 Flood

58 Project Discovery 2010 Flood

59 Project Discovery Litigation

60 Project Discovery Quoting the Corrective Plan A Corrective Plan was formulated under the Interstate Compact It limits the elevation and placement of any agricultural levee within the reach below Grand Forks to State Route 317 Bridge. Finding 6 states, in order to protect the integrity of the plan, no roads can be raised within a defined effective flow area. Effective Flow area at Oslo: Intersection of Mn Hyw 1 and Highway 220 (Marshall County, Mn) to first T intersection just west of the Grand Marais River on ND Hwy 54. Defined by 43,000 cfs flood profile USACE Solution Interstate agreement to amend the Corrective Plan (NDSWC, MNDNR, Grand Forks, Walsh County, Middle-Snake- Tarmarac Rivers Water Resource Districts)

61 Project Discovery Existing Study Information Final Hydrology Report Hydrologic Analyses The Red River of the North Main Stem Wahpeton/Breckenridge To Emerson, Manitoba. Prepared by: U.S. Army Corps of Engineers St. Paul District, September Regional Red River Flood Assessment Report Wahpeton, North Dakota/Breckenridge, Minnesota To Emerson, Manitoba. Prepared by: U.S. Army Corps of Engineers St. Paul District and the Federal Emergency Management Agency Region V and Region VIII, January (1991 HEC-2) Grand Forks, ND & East Grand Forks, MN Flood Insurance Study January This report documents the products developed for the Grand Forks, ND & East Grand Forks, MN FIS.

62 Alternatives Investigated Do Nothing Road Grade Raise ND Hwy 54 Raise grade of both ND Hwy 54 and I-29 Increase Hydraulic capacity of existing structures Add additional structures for hydraulic capacity Remove Soo Line Rail Road Crossing Raise the Grade of Mn Hwy 1 Raise grade of both ND Hwy 54 and Mn Hwy 1

63 Hydrologic and Hydraulic Analysis Model Boundary Conditions Starting Condition moved from Emerson to Downstream of Drayton, ND (ND Hwy 66/ Mn Hwy 11) Field Survey conducted by Ulteig Supplement Red River Basin LIDAR Geo-referencing Issue (UTM verse Stateplane Coordinates) HEC-2 Channel Cross Sections Vertical Datum Adjustment New US COE Unsteady State Model Extension of Cross Sections Bridge Cross-Section Adjustments Skew of North Marais Bridge Additional Drainage Culverts Discovered Adjustments to Pier and Manning's n

64 USGS Stream Gages Red River Gage at Grand Forks is located at River Mile about 50 feet downstream of the DeMers Avenue bridge in Grand Forks, North DakotaRoad Grade Raise ND Hwy 54 Gage at Oslo, Minnesota is located on the ND Hwy 54/MN Hwy 1 Bridge crossing the Red River at River Mile Increase Hydraulic capacity of existing structures Gage at Drayton, North Dakota is located on the downstream side of the ND Hwy 66/MN Hwy 11 Bridge crossing the Red River at River Mile Location Gage at Pembina, North Dakota is located on the left bank on f the ND Hwy 5/MN Hwy 171 Bridge crossing the Red River at River Mile Location Raise the Grade of Mn Hwy 1 Gage records for the Emerson, Manitoba gage 05OC001 courtesy of Environment Canada

65 Hydraulic Analysis Emerson Reach Landmarks River Mile Description USGS gage International gaging station at Emerson, Manitoba O50C Canadian National Railway bridge at Emerson, Manitoba Provincial Hwy 75 bridge at Emerson Manitoba 155 International boundary 158 Pembina River, North Dakota Minesota Hwy 171 bridge at Pembina, North Dakota Two Rivers, Minnesota USGS gaging station Red River at Pembina, North Dakota USGS gaging station Red River at Drayton, North Dakota Minnesota Hwy 11, North Dakota Hwy 66 bridge at Drayton, North Dakota Tamarac River, Minnesota Park River, North Dakota 230 Snake River, Minnesota 236 Minnesota Hwy 317, North Dakota Hwy 17 bridge Forest River, North Dakota North Marais River, North Dakota Soo Line Railroad bridge at Oslo, Minnesota USGS gaging station Red River at Oslo, Minnesota North Dakota Hwy 54, Minnesota Hwy 1 bridge Oslo Levee Turtle River, North Dakota Grand Marais Creek, Minnesota Riverside Park Dam, Grand Forks, North Dakota Old USGS gaging station in Riverside Park, Grand Forks US Hwy 2 bridge at Grand Forks, North Dakota Burlington Northern Railway bridge at Grand Forks Demers Avenue bridge at Grand Forks, North Dakota USGS gaging station Red River at Grand Forks, North Dakota

66 Hydraulic Analysis Emerson Reach

67 Hydraulic Analysis Flow Change Locations

68 Hydraulic Analysis US Geodetic Survey VERTCON

69 Hydraulic Analysis Field Survey Red River Bridge

70 Hydraulic Analysis Field Survey North Marais Bridge

71 Hydraulic Analysis Road Profile Field Survey Red River Bridge

72 Hydraulic Analysis Road Profile I-29 Overflow Areas I-29 Northbound Breakout Location usptream of Hwy 54 Elevation (ft-msl) Distance (feet) I-29 Breakout Flow I-29 Min Elevation Min Station XS 107 Twin, 8x8 RCP Soo RR and I-29 Overpass Hwy 54 XS 105 XS 108 Twin, 10x5 RCP Twin, 10x6 RCP XS 109

73 Hydraulic Analysis Road Profile I-29 Overflow Areas Combined flow leaving system is about 3,450 cfs

74 Preliminary Findings Road Raise ND Hwy 54 NewHyw54 Plan: Alternative 2 - Raise Hwy 54 9/2/2011 River = RRN Reach = DraytonToGF RS = MO ND HWY 54/MN HWY 1, OSLO, MN HWY 54 and Mn River 1997 Existing Alt. 2 Station/USCOE XS Flows (cfs) WSE (ft) WSE (ft) WSE (ft) , , , , Soo Line Rail Road , , , ND Hwy 54/MN Hwy , , Legend WS 1997 Ground Ineff Bank Sta 812 Elevation (ft) Station (ft)

75 Preliminary Findings Road Raise ND Hwy 54 and I-29 River 1997 Existing Alt. 3 Station/USCOE XS Flows (cfs) WSE (ft) WSE (ft) WSE (ft) , , , , Soo Line Rail Road , , , ND Hwy 54/MN Hwy , ,

76 Preliminary Findings Increase hydraulic capacity NewHy w54 Plan: Alternativ e 4 - Add Structures Hy d Cap 9/6/2011 River = RRN Reach = DraytonToGF RS = MO ND HWY 54/MN HWY 1, OSLO, MN HWY 54 and Mn 1 Elevation (ft) River 1997 Existing Alt. 4 Station/USCOE XS Flows (cfs) WSE (ft) WSE (ft) WSE (ft) , , , , Soo Line Rail Road , , , ND Hwy 54/MN Hwy , , Legend WS 1997 Ground Ineff Bank Sta Station (ft)

77 Preliminary Findings Road Raise Mn Hwy 1 River 1997 Existing Alt. 7 Station/COE XS Flows (cfs) WSE (ft) WSE (ft) WSE (ft) , , , , Soo Line Rail Road , , , ND Hwy 54/MN Hwy , ,

78 Preliminary Findings Road Raise Mn Hwy 1 and ND Hwy 54 River 1997 Existing Alt. 8 Station/ COE XS Flows (cfs) WSE (ft) WSE (ft) WSE (ft) , , , , Soo Line Rail Road , , , ND Hwy 54/MN Hwy , ,

79 Conclusion Amendment to court order of development activity within the Corrective Plan is needed Alternatives seem feasible with minimal increases in flood depths Additional investigations needed with alternate modeling approaches to consider (2d modeling, USCOE unsteady state model) Stakeholder review

80 Questions? All content in this presentation 2012 Ulteig Engineers, Inc.

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