Spencer Mill
Spencer Mill is a gravity dam located in Susquehanna County, Pennsylvania, built in 1919. It carries a Significant hazard potential classification and has a poor condition assessment.
About Spencer Mill
The primary purpose of Spencer Mill is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Alexander Curtis (private). It impounds the Starrucca Creek.
The dam stands 16 feet tall and stretches 180 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 35 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1919, 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 08/18/2020.
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Location
| State | Pennsylvania |
| County | Susquehanna |
| River/Stream | Starrucca Creek |
| Coordinates | 41.86194, -75.51889 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 180 ft |
| Year Completed | 1919 (107 years old) |
Storage & Hydraulics
| NID Storage | 35 acre-ft |
| Max Storage | 35 acre-ft |
| Normal Storage | 9 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 3 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | ALEXANDER CURTIS |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 08/18/2020 |
| Emergency Action Plan | No |
Identifiers
| NID ID | PA01348 |
| Federal ID | PA01348 |
| More Info | State Dam Safety Program |