GreenPhilly Research Group StormWISE Web App

StormWISE Wingohocking Case Study

Wingohocking Sewershed, North Philadelphia

Wingohocking Creek Watershed: This is the Largest Sewershed in Philadelphia's CSO Area

Switch to Overbrook Model Guide & Documentation

Please Read This Guide Before Starting Your First StormWISE Session

The map below shows the boundaries of the Winghocking Sewershed superimposed on an aerial image of Philadelphia, with scales showing latitude and longitude. The three subcatchment zones used in our StormWISE case study are also shown: Upper, Middle, and Lower. Sewer overflows spill into the Tacony Creek in Northeast Philadelphia near the southeast corner of the sewershed boundary. Our Wingohocking StormWISE case study places green infrastructure in all three zones depending on its effectiveness in reducing CSOs into Tacony Creek and creating community co-benefits within the sewershed boundaries.

Boundaries of Wingohocking Sewershed
Rain Barrels

Our Wingohocking Case Study places Rain Barrels, Tree Trenches, and Rain Gardens at sites in each of the three subcatchment zones. These three types of green infrastructure were chosen because we are able to accurately model their effectiveness in reducing CSOs using EPA's Storm Water Management Model (SWMM). Philadelphia's Water Department also uses SWMM extensively throughout the City to model stormwater runoff and sewer flows. Photos of typical Philadelphia installations are shown below. Click on these images to enlarge them.

Philadelphia Tree Trench
Philadelphia Rain Garden

Click New Session to clear results

This will reset all inputs to their default values and removes any accumulated results.

  1. Set importance for each co-benefit

In the optimization step, the core solver will favor co-benefits that are more highly weighted, and disfavor co-benefits that are less highly weighted. You may use these inputs to choose which co-benefits you care about most.

Benefit Importance (Weight)
More Open Space
Improving Aesthetics
Green Canopy Cooling
More Green Jobs
Lower GI Maintenance Cost
Lower Sewer Fees
  • Set suitability for each green infrastructure type

Each installed type of green infrastructure produces fixed amounts of CSO reduction and co-benefits, such as green canopy. But in the Wingohocking case study, the total number of sites where a certain green infrastructure can be installed may vary depending on the hydrological subcatchment (upper, middle, or lower) where it is installed. If you believe that any of the three different green infrastructure types evaluated here may be more or less well suited for a particular Winghocking subcatchment, you can change the settings below. The core solver will use these settings to adjust how much of each green infrastructure type can be built in each subcatchment.

Subcatchment Zone
Rain Barrels

Tree Trenches

Rain Gardens
  1. Click Optimize to generate results

The results displayed are generated behind the scenes (on our remote server) by running the core solver hundreds of times, with each run representing a different magnitude of green stormwater implementation in the planning area.

  1. Results

You may use the plots and charts displayed here to answer questions about how best to target the investments with regard to the types of green infrastructure to install and the places to deploy them so as to achieve the required CSO reductions at the least cost in investment dollars and to maximize the measure of community co-benefits that incorporates your specified weighting. The map of the Wingohocking Sewershed below allows you to zoom in to show greater detail or to zoom out to get a better idea of where the sewershed is located in Philadelphia.