Using GIS for Stormwater Billing and Impervious Surface Calculations
The Philadelphia Water Department is leveraging GIS to create a billing system based on the amount of impervious surface cover on commercial properties. Stormwater billing based on impervious surface area both distributes the cost of managing stormwater more equitably and creates incentives for property owners to implement best management practices for mitigating stormwater runoff on-site. The bill calculation is performed using a series of GIS models assembled using ArcObjects, python scripts and a geoprocessing queuing system. The resulting datasets are then made available to Water Department customers via an ArcGIS Server application. In addition to searching and mapping, the application supports the billing appeals process and enables users to calculate the estimated financial benefits of implementing stormwater mitigation activities. This presentation will showcase the Philadelphia Water Department application and outline the benefits and challenges of using GIS technology for stormwater management and impervious surface area calculations in urban environments.
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Using GIS for Stormwater Billing and Impervious Surface Calculations
- 1. Using GIS for Stormwater Billing and Impervious Surface Calculations Dana Bauer [email_address] Casey Thomas [email_address] www.phillystormwater.org
- 3. 10% Research Program Pro Bono Program Time-to-Give-Back Program Employee-focused Culture Projects with Social Value
- 7. Maps courtesy Philadelphia Water Department/phillyH2O.org
- 9. EPA
- 10. EPA
- 11. Schuylkill River Regular Flow vs June 2006 Flood Photos courtesy PWD
- 13. CC image courtesy of Thomas Hawk on Flickr
- 14. CC image courtesy of JSmith Photo on Flickr
- 16. Some Bills Go Down Existing Charge = $ 4,702.82 New Charge = $ 120.24 Gross Area = 24,338 Imperv Area = 24,338
- 17. Some Bills Go Up Existing Charge = $ 377.23 New Charge = $ 2,496.42 Gross Area = 599,744 Imperv Area = 491,035
- 29. Data, data, data
- 33. Geoprocessing
- 34. 550,000+ parcels
- 35. PWD Enterprise Geodatabase PWD Billing Database
- 36. Photo courtesy Philadelphia Tourism Board
- 37. Parcel Fact Sheet PDF
- 38. Appeals
- 39. Credit Opportunities Images courtesy PWD
- 42. Many Thanks! © Photo used with permission from Alphafish , via Flickr.com
- 43. Using GIS for Stormwater Billing and Impervious Surface Calculations Dana Bauer [email_address] Casey Thomas [email_address]
Hinweis der Redaktion
- Photo courtesy PWD
- Photo courtesy PWD
- Photo courtesy PWD
- Photos courtesy PWD
- In 1996, the Stormwater Reallocation Citizens Advisory Council recommended that the city implement a reallocation formula based upon the gross size and the imperviousness of the property
- In 1996, the Stormwater Reallocation Citizens Advisory Council recommended that the city implement a reallocation formula based upon the gross size and the imperviousness of the property
- Photo courtesy Philadelphia Tourism Board
- Image courtesy PWD
- Images courtesy PWD