Urban Mapping and Providing Partner Services Utilizing GIS Presenter: Josh Garver. GISP, Assistant Director;

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1 Urban Mapping and Providing Partner Services Utilizing GIS Presenter: Josh Garver. GISP, Assistant Director;

a useful tool Applications for Forestry Applications for Farming

2 What I d Like You to do: Think Spatially Look for Shapes Look for Patterns Look for Relationships What I Hope Happens: You View GIS as a useful tool Applications for Forestry Applications for Farming Applications for Restoration and/or Planning Image credit: gis-consultant.com

3 Educational Opportunities: Natural Boundaries Source vs- Issue Distances of Interaction Stormwater [is] Drinking Water Stormwater Management Current population for Columbus area is ~ 1.2 million Projections estimate that the population will increase by ~500,000 by 2050

4 Stormwater Stormwater Focus and how we address it Stormwater runoff is generated when precipitation from rain and snowmelt events flows over land or impervious surfaces and does not percolate into the ground. and.... As the runoff flows over the land or impervious surfaces (paved streets, parking lots, and building rooftops), it accumulates debris, chemicals, sediment or other pollutants that could adversely affect water quality if the runoff is discharged untreated [or managed]. ( Source: ) N.P.D.E.S. Permits Only Rain Down the Drain As authorized by the Clean Water Act, the National Pollutant Discharge Elimination System (NPDES) permit program controls water pollution by regulating point sources that discharge pollutants into waters of the United States. ( Source: )

5 GIS: (Geographic Information System) GIS is a computer-based technology developed around geo-spatial information (having a location on the earth's surface). GIS allows for data development, management, and analysis as well as the presentation of the data in a variety of visual formats including maps, database tables and charts. Geomatics GPS: (Global Positioning System) GPS is a satellite based radio navigation system that allows users to determine their exact location, velocity, and time 24 hours a day anywhere in the world. The basic components consist of satellites, base stations and mobile receivers.

6 Franklin Soil and Water Conservation District District Programs Backyard Conservation Conservation Implementation Developing Lands: Urban Con. Education and Outreach Geomatics Watershed Resource Specialists

7 Gathering Field Data With GPS

8 Gathering Field Data With GPS Lots o Data Over 130,000 collected data points across the county Streamway Mapping IDDE HSTS Mapping Waterway Inspections MS4 Mapping... Etc.

9 Stream Resource Geodatabase Started in 1998, Transfer of county-petitioned drainage in Franklin County to mylars at 1 to 6000 scale. Data digitized included all surface drainage, including road right-of-way drainage, culverts, bridges, and available stormwater connectors. Flow directionality was determined and included with the features by using contours and spot elevations from increasingly accurate sources up to 1 contours obtained through the City of Columbus in Currently contains over 8,000 miles of surface and subsurface drainage. Changes on a daily basis with the support of our local municipalities.

10 GIS: (Geographic Information System) GIS is a computer-based technology developed around geo-spatial information (having a location on the earth's surface). GIS allows for data development, management, and analysis as well as the presentation of the data in a variety of visual formats including maps, database tables and charts. The basic Geometry used with GIS Points Lines Polygons So When You See a Graphic / Map Like This:

11 The Basic Geometry Used With GIS

12 Keep in Mind that all of those features relate to attributes:

13 Streamway Inventories Dublin Westerville Obetz Gahanna Columbus

14 Streamway Inventory Results Physical Parameters recorded within GIS Data ~6 Miles of Impacts IB_### Areas of Concern within Stream Corridor Photographic Records

Riparian Corridors and Stream Setbacks not being used Riparian

within the FEMA designated floodplain or within 75 feet each

should follow established programs and ordinances as closely as

restoration being considered for adoption.

15 Riparian Corridors and Stream Setbacks not being used Riparian Corridor : Defined for the purposes of this study as the area within the FEMA designated floodplain or within 75 feet each side of the stream center line (150 foot total width), whichever is greatest. Development of a buffer program for the riparian corridor should follow established programs and ordinances as closely as possible, with variable width buffers for protection and restoration being considered for adoption. Higher Elevations Buffer Area Floodplain Stream Corridor Elevation Change Buffer System Model Establish/Enforce a Comprehensive Buffer Initiative

$Elevations\ & Sub-Surface$

16 Urban Delineations: What is Our Approach Catchment Creation: Combining Surface Elevations\ & Sub-Surface Infrastructure

17 Urban Delineations: Modeled vs- Manual Delineation Comparison Modeled 2009 Acres Manual 1367 Acres Variance 13% avg.

18 Glen Echo: Example Downtown Columbus, Ohio

19 Urban Delineations: The Reality Size: acres ; 2.14 sq. mi. Open Channel: ft; 1.18 mi. Protected Channel: 25% 1566 ft. Forest: 25% acres Corridor Forested: 54% Impervious Cover: 39% acres Erosion Potential: 0.69acres 0.05% of Crossings: 5.9 per mi. Land Use: 19.8% Public Service 64.2% Private 28% ROW Socio-economic status: 50.3; low N.H.D. Watershed Delineation: Surface

20 Glen Echo Ravine: Urban Stream Syndrome; Flashiness Pinch Point

21 Urban Delineations: Sub-Dividing 1 Basin Analysis 2 Divide into sub-basins 4 Aid in targeting solutions Each basin has its own pinch-point 5 3

22 Urban Watershed & Green Infrastructure Columbus Blueprint Columbus is an innovative way of eliminating sanitary sewer overflows while also investing in our neighborhoods and our local economy. Blueprint Columbus was approved by the Ohio EPA on December 1, This plan has many advantages over the City s original Wet Weather Management Plan: it's faster and cheaper; it s greener; it s more affordable; it s more innovative; it s better for our neighborhoods and our local economy; and it s what our community wants The Four Pillars Sanitary lateral lining Roof water redirection Sump pump program Green infrastructure [ infiltration ] projects Credit and more info:

Urban Watershed & Green Infrastructure Columbus Planning Scale Watershed Impervious % Excellent 10% Impervious Impact Threshold Acres Below Threshold by: Little Darby Creek 1.22 149 Big Darby Creek 3.

23 Urban Watershed & Green Infrastructure Columbus Planning Scale Watershed Impervious % Excellent 10% Impervious Impact Threshold Acres Below Threshold by: Little Darby Creek Big Darby Creek ,694 Sensitive (Transition) Acres Below Threshold by: Hellbranch Run Impacted Acres Above Threshold Rocky Fork Creek Blacklick Creek ,215 Walnut Creek Non-Supporting Acres Above Threshold Scioto River ,101 Olentangy River ,068 Alum Creek ,764 Big Walnut Creek ,927

24 How to Calculate the Statistics Needed? Phase II Delineations (for approval on Integrated Plan): 1,787 delineations Inlet Delineations for Project Specific Sites: ~4,500 The Use of Model Builder is the Undeniable Choice for Calculating Statistics.

25 Specific Green Infrastructure Projects Inlet Delineations for Project Specific Sites: ~4500 Used for specific site infrastructure projects. Projects are planned out for ~ 30 years.

26 Canopy Cover Data Urban Drainage < 33% Non-Supporting 33-40% Impacted 40-45% Sensitive 45-65% Excellent % United States Department of Agriculture Forest Service Cappiella et al % Canopy Cover Summary Stats per Catchment Delineation

Impervious Cover Urban Drainage 60-100% Non-Supporting 25-60% Impacted 11-25% Sensitive

27 Impervious Cover Urban Drainage % Non-Supporting 25-60% Impacted 11-25% Sensitive 6-11% Excellent < 6% Walsh et al % Impervious Summary Stats per Catchment Delineation

28 Turf Cover Compaction Impervious Landscape Allowance Storage Availability 32% Turf Summary Stats per Catchment Delineation

29 Right-of-Way Interception Storage Infiltration 4% ROW Summary Stats per Catchment Delineation

30 Run-Off Reduction Method Composite Runoff Volume Impervious, Canopy, Turf, & Soils 88 to 20 Catchments Targets for Volume Reduction PRIORITIES! Center for Watershed Protection. Schueler et al. 2008

Recommendations for Stormwater Implications Characteristics: The SR_W23 stormwater catchment is 19.22 acres. Comprised of single family homes with three cul-de-sac offshoots (Lynette Pl.

The Issues: SR_W23 stormwater catchment exhibits high impervious cover (38%) and low canopy cover (26%).

Spring SIC_001 CDS_001 Nicole SIC_002 Kim Recommendations: Reduce volume by disconnecting 5.5 acres of impervious surface at a minimum to reach a target goal of 10% imperviousness.

Consider entire suite of practices located in the Stormwater Management section of the Toolbox in the document. Increase canopy cover by planting to meet the minimum target of 2.4 acres on the 4.

31 Recommendations for Stormwater Implications Characteristics: The SR_W23 stormwater catchment is acres. Comprised of single family homes with three cul-de-sac offshoots (Lynette Pl. North and South, and College Ct.) and two collector streets (College Ave E., Nicole Dr.). There are 19 inlets basins that collect and distribute stormwater to an outfall directly into Spring Run. The Issues: SR_W23 stormwater catchment exhibits high impervious cover (38%) and low canopy cover (26%). As part of phase II modeling, this catchment exhibited the traits of a landscape with high volumes (0.53 acre-feet) for the size of the catchment. Spring SIC_001 CDS_001 Nicole SIC_002 Kim Recommendations: Reduce volume by disconnecting 5.5 acres of impervious surface at a minimum to reach a target goal of 10% imperviousness. Consider using dispersed curb and roof drain storage at SIC_001 and SIC_002, in combination with a Cul-de-Sac storage at CDS_001. Consider entire suite of practices located in the Stormwater Management section of the Toolbox in the document. Increase canopy cover by planting to meet the minimum target of 2.4 acres on the 4.3 acres available to reach a target goal of 40% canopy cover. Street trees will provide additional cover over impervious area. Consider a street tree planting in available right-of way. Consider the establishment of a subwatershed-wide tree planting incentive in conjunction with a buffer initiative, to establish tree canopy on private land. Components of such an initiative may include: Education and outreach through mailings, social media, inperson workshops and other methods; Providing residents access to low-cost or free trees and grasses through a program much like the GreenSpot Rain Barrel run by Franklin Soil and Water or Spring Tree Sale. Consider monitoring outflow before and after implementation to establish baseline and to measure success. ID SR_W23 Priority Level - High Reduce Volume Disconnect 5.5 acres of Impervious Surface Increase Canopy Cover Plant to meet minimum of 2.4 acre target Catchment Impervious % Canopy Acres Impervious Acres Existing Canopy % Existing Available Turf Grass Acres Existing Existing SR_W Maximum Impervious Acres Target Disconnect Minimum Canopy Acres Target Canopy Area Acres Available Right-of-Way Acres (10%) Acres (40%) Acres

?? Custom Boundaries Natural Boundaries Political Boundaries For Successful analysis: you want consistent data

32 So my question to You : Do you see possibilities of using GIS for Applications for Forestry Applications for Rural Locations, Urban Applications for Restoration and/or Planning??? Custom Boundaries Natural Boundaries Political Boundaries For Successful analysis: you want consistent data across your study area, both in coverage of features and temporal aspect. Consult professionals who can assist you in categorizing features and evaluating your results.

MS4: MAPPING CHALLENGES. Mike Towle Associate Planner, WestCOG

MS4: MAPPING CHALLENGES. Mike Towle Associate Planner, WestCOG MS4: MAPPING CHALLENGES Mike Towle Associate Planner, WestCOG mtowle@westcog.org Please contact or attribute author before using any images or data from this presentation Overview I. Theory and background