Timber Lake
Timber Lake is an earth dam located in Washington County, Pennsylvania, built in 1990. It carries a Significant hazard potential classification and has a fair condition assessment.
About Timber Lake
The primary purpose of Timber Lake is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Ryan Homes, Inc. (private). It impounds the Tr Peters Creek.
The dam stands 17 feet tall and stretches 575 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 63 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1990, the structure is 36 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 07/20/2017.
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Location
| State | Pennsylvania |
| County | Washington |
| River/Stream | Tr Peters Creek |
| Coordinates | 40.26306, -80.04889 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 575 ft |
| Year Completed | 1990 (36 years old) |
Storage & Hydraulics
| NID Storage | 63 acre-ft |
| Max Storage | 63 acre-ft |
| Normal Storage | 18 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 1 sq mi |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | RYAN HOMES, INC. |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 07/20/2017 |
| Emergency Action Plan | No |
Identifiers
| NID ID | PA01503 |
| Federal ID | PA01503 |
| More Info | State Dam Safety Program |