Philadelphia Water Department
Office of Watersheds
Green Cities,
Clean Waters

Summary
All stormwater basins draining
to tributaries of Wissahickon Creek in Upper Dublin Township were mapped by PWD in 2006. PWD scientists, contractors, and
co-op students from Drexel University examined topographic maps to identify depressions (concentric rings) that were
likely to be stormwater basins. Once this screening procedure was complete, the potential basin locations were visited
for field verification and photographed with a digital camera. A GPS-enabled ruggedized tablet PC was used to capture
points at each basin and record descriptional attributes to GIS. The following basic information was collected about
each basin:
| Data Field | Data Type | Description |
|---|---|---|
| Name | text | Basin address or development name |
| Area | numeric | Basin area in square feet |
| Inlets/Outlets | numeric | Number of inlets/outlets |
| Low Flow Channel(s) | Yes/No | Whether low flow channels are present |
| Permanent pool(s) | Yes/No | Whether permanent pools are present |
| Forebay(s) | Yes/No | Whether sediment forebay is present |
| Outlet Condition | text | Describes condition of outlet structure |
| Vegetation | text | Description of vegetation type |
NOTE: These are the basic attributes only; visit the GIS Metadata Page for more information.
IMPORTANT: Your use of these data is subject to the City of Philadelphia's Terms and Conditions for sharing GIS data.
All Project Data
The Entire 104b3 Project Dataset for Upper Dublin Township
Download the entire project dataset, including
This 2.16MB zip file contains all the data used in the 104b3 project. To create a complete GIS mapping application, also download basemapping data (described at right).
Basemap Data
Suggested basemap for Upper Dublin Township
In addition to the Stormwater Basin Inventory data, users may also want to download basemapping data:
These resources will improve map making and viewing when used with the stormwater basin inventory data.
Go to Basemap Data Page.
Stormwater Basins
(Upper Dublin Township data only)
Infrastructure
(Upper Dublin Township data only)
FEMA Floodplains
(Upper Dublin Township data only)
Hydrology Polygons
(Upper Dublin Township data only)
Hydrology Line
(Upper Dublin Township data only)
Subwatersheds
(Upper Dublin Township data only)
Municipal Border
(Upper Dublin Township data only)
Google Earth Data
(Upper Dublin Township data only)
Download all Upper Dublin Township data for Google Earth