Dams in Philadelphia County, Pennsylvania
7Total Dams
3High Hazard
1Significant
Dam Safety in Philadelphia County, Pennsylvania
Philadelphia County has 7 dams tracked in the National Inventory of Dams. Of these, 3 are classified as high hazard — meaning failure would probably cause loss of human life. Another 1 carry a significant hazard classification. Currently, 1 dams have a condition assessment of poor or unsatisfactory.
The average dam in Philadelphia County is 90 years old. The most common purpose is water supply. The tallest dam is Queen Lane Raw Water Basin at 50 ft.
Explore more: Oldest dams in Pennsylvania · Tallest dams · High risk dams · Largest reservoirs
Data note: Hazard potential describes the consequences if a dam failed; it does not predict the likelihood of failure. Inspection, condition, and emergency-plan fields can be incomplete or delayed. Check state dam-safety officials and local emergency managers for official guidance.
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Queen Lane Raw Water Basin | High | Fair | 50 | Water Supply | 1900 |
| Belmont Raw Water Basin | High | Fair | 30 | Water Supply | 1901 |
| Philadelphia Mills | High | Fair | 24 | Flood Risk Reduction | 1994 |
| Fairmount | Significant | Satisfactory | 32 | Water Supply | 1927 |
| Flat Rock | Low | Fair | 21 | Recreation | 1977 |
| Baxter Raw Water Basin | Low | Poor | 21 | Water Supply | 1916 |
| Water Control Structure | Undetermined | Not Rated | 10 | Other |