Lower West Deer Lake
Lower West Deer Lake is an earth dam located in Allegheny County, Pennsylvania. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Lower West Deer Lake
The primary purpose of Lower West Deer Lake is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Allegheny County Department Of Engineering (local government). It impounds the Tr Little Deer Creek.
The dam stands 16 feet tall and stretches 285 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 37 acre-feet, and collects water from a drainage area of 0 square miles.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 10/26/2020.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Pennsylvania dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Pennsylvania |
| County | Allegheny |
| River/Stream | Tr Little Deer Creek |
| Coordinates | 40.62000, -79.82889 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 285 ft |
Storage & Hydraulics
| NID Storage | 37 acre-ft |
| Max Storage | 37 acre-ft |
| Normal Storage | 17 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | ALLEGHENY COUNTY DEPARTMENT OF ENGINEERING |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/26/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | PA01720 |
| Federal ID | PA01720 |
| More Info | State Dam Safety Program |