Nash's Lake
Nash's Lake is a stone dam located in Washington County, Maine, built in 1890. It carries a Significant hazard potential classification and has a poor condition assessment.
About Nash's Lake
The primary purpose of Nash's Lake is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Calais (local government). It impounds the East Branch Magurrewock Stream near Calais.
The dam stands 30 feet tall and stretches 325 feet across, creates a reservoir covering 627 acres, and has a maximum storage capacity of 11,760 acre-feet. 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 08/07/2025.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Maine |
| County | Washington |
| Nearest City | Calais |
| River/Stream | East Branch Magurrewock Stream |
| Coordinates | 45.12530, -67.22305 |
Physical Characteristics
| Dam Type | Stone |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 325 ft |
| Year Completed | 1890 (136 years old) |
Storage & Hydraulics
| NID Storage | 11,760 acre-ft |
| Max Storage | 11,760 acre-ft |
| Surface Area | 627 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Calais |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 08/07/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | ME00617 |
| Federal ID | ME00617 |
| More Info | State Dam Safety Program |