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Stormwater Impervious Surface Area Application

Stormwater Impervious Surface Area Application. City of Indianapolis, INDIANA. Stormwater Impervious Surface Area Application. City of Indianapolis, INDIANA. Stormwater Impervious Surface Area Application. City of Indianapolis, INDIANA. Stormwater Impervious Surface Area Application.

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Stormwater Impervious Surface Area Application

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  1. Stormwater Impervious Surface Area Application City of Indianapolis, INDIANA

  2. Stormwater Impervious Surface Area Application City of Indianapolis, INDIANA

  3. Stormwater Impervious Surface Area Application City of Indianapolis, INDIANA

  4. Stormwater Impervious Surface Area Application City of Indianapolis, INDIANA

  5. Indianapolis Storm Water Serves about 300,000 customers in Marion County Miles of storm sewer and ditches, inlets and other structures Two dams Miles of flood protection levees Estimated value of the system is approximately $1.1 billion

  6. Stormwater System Problems Poor Drainage and Flooding Water runs into the City’s storm water system off rooftops, parking lots, city streets, driveways (impervious surfaces) Lack of adequate storm sewer and drainage in many parts of the City Some home and business owners do not maintain inlets and gutters, ditches, swales and creeks on their private property

  7. Storm Water Utility Fee Stormwater fee used to be flat for all residential parcels regardless of the size, non-residential customers were billed depending on the impervious area size In December 2014, the Indianapolis City-County Council approved a proposal that may change stormwater utility fee Effective July 2015, stormwater fees for all types of parcels are calculated based on the City’s measurements of the impervious surface area on the parcel of any type, residential or non-residential

  8. Impervious Surface Area Area that has been paved and/or covered with buildings and materials such that the infiltration of stormwater into soil is prevented or impeded: Concrete Asphalt Rooftop or blacktop Gravel driveways Private roadways Parking lots and similar areas designed or used for vehicular traffic Others

  9. Impervious Surface Area

  10. Fee Calculation From Indianapolis-Marion County Code, Title I, Chapter 131, Article IV, Division 2, Sections 131-425:"The monthly stormwater user fee shall be calculated utilizing the measured impervious area (IA) for each parcel and assigning the parcel to a group assigned one (1) base billing unit (BBU) or a multiple of BBUs following the convention​: • 1—1,000 square feet of measured IA is assigned one (1) BBU;  • 1,001—2,000 square feet of measured IA is assigned two (2) BBUs;  • 2,001—3,000 square feet of measured IA is assigned three (3) BBUs and progressing in a manner such that each additional 1,000 square foot unit of IA is assigned an additional BBU.  • BBUs shall be assigned to each parcel proportional to each one thousand-square foot increment of IA contained on the parcel. "

  11. Financial Impact Allows the City of Indianapolis to raise funds for capital improvements of the stormwater system (estimated $320 million) Raises approximately $30 million annually to address many issues Alleviate neighborhood and street flooding that plagues residents and impedes business development Improve water quality in our rivers and streams by improving neighborhood drainage Improve impervious infrastructure, such as streets and sidewalks, that is damaged by standing water Resolve many drainage complaints

  12. Data Collection Light Detection and Ranging (LiDAR) Aerial imagery

  13. Data Extraction Fuse LiDAR and aerial imagery data Perform segmentation Conduct analysis Extract features Refine data

  14. Data Validation Aerial Imagery Extracted Features Oblique Imagery

  15. Customer Service Interface An application that allows everyone to see the amount of impervious surface area on their parcel as well as stormwater utility fee amount Helps customers to understand their billing Helps City of Indianapolis staff to resolve any disputes with customers regarding the billing The application must be ready by the cycle of billing in fall of 2015

  16. Customer Service Interface Requirements Must be Web application Has to be part of the MapIndy suite of applications (http://maps.indy.gov/MapIndy/) Provide detailed information on each property and its impervious surface Should allow map printing and reports generation Allows direct access to property information upon opening (can generate direct URL to selected property) Provide availability of oblique image photography Tools to find properties by address and/or parcel number

  17. Customer Service Interface Data Sources Indy Property Management System Copy of the Property Management Data on SDE Impervious Area Feature Class (SDE) Parcel Number Impervious Area Map Feature Service

  18. Storm Water Impervious Surface Area Application Technology Built using Flex Flex SDK 4.6 and ArcGIS Flex API 3.1 On top of ESRI ArcGIS Viewer For Flex (http://www.esri.com/software/arcgis/viewer-for-flex) Used out of the box and custom built tools and widgets The application uses tiled (cached) map services as a base map and feature map services as operational layers Operational layers data is joined with property management system data http://maps.indy.gov/MapIndy/Index.html?theme=imperviousareas

  19. Road Ahead Convert to HTML5/JavaScript Make the application mobile friendly Redesign of the application Improve the process of annual data update Other enhancements

  20. Questions???

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