Lake Underwood
Lake Underwood is an earth dam located in Wayne County, Pennsylvania, built in 1890. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Lake Underwood
The primary purpose of Lake Underwood is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lake Underwood Nimrod Club (private). It impounds the Tr Equinunk Creek.
The dam stands 9 feet tall and stretches 110 feet across, creates a reservoir covering 86 acres, has a maximum storage capacity of 378 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1890, the structure is over a century 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 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 11/20/2019.
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Location
| State | Pennsylvania |
| County | Wayne |
| River/Stream | Tr Equinunk Creek |
| Coordinates | 41.83806, -75.36528 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 9 ft |
| Dam Height | 9 ft |
| Dam Length | 110 ft |
| Year Completed | 1890 (136 years old) |
Storage & Hydraulics
| NID Storage | 378 acre-ft |
| Max Storage | 378 acre-ft |
| Normal Storage | 310 acre-ft |
| Surface Area | 86 acres |
| Drainage Area | 3 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | LAKE UNDERWOOD NIMROD CLUB |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/20/2019 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | PA00129 |
| Federal ID | PA00129 |
| More Info | State Dam Safety Program |