Philadelphia Water Department
Office of Watersheds
Green Cities,
Clean Waters

Summary
All stormwater basins draining
to tributaries of Wissahickon Creek in Montgomery 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 Montgomery Township
Download the entire project dataset, including
This 307KB 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 Montgomery 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.
Infrastructure
(Montgomery Township data only)
FEMA Floodplains
(Montgomery Township data only)
Hydrology Polygons
(Montgomery Township data only)
Hydrology Line
(Montgomery Township data only)
Subwatersheds
(Montgomery Township data only)
Google Earth Data
(Montgomery Township data only)
Download all Montgomery Township data for Google Earth