Coomer Lake
Coomer Lake is a rockfill dam located in Providence County, Rhode Island, built in 1885. It carries a Significant hazard potential classification and has a poor condition assessment.
About Coomer Lake
The primary purpose of Coomer Lake is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Providence Water Supply Board/city Of Providence (local government). It impounds the Peeptoad Brook near Glocester.
The dam stands 21 feet tall and stretches 330 feet across, creates a reservoir covering 11 acres, has a maximum storage capacity of 510 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1885, 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.
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Location
| State | Rhode Island |
| County | Providence |
| Nearest City | Glocester |
| River/Stream | Peeptoad Brook |
| Coordinates | 41.87953, -71.62326 |
Physical Characteristics
| Dam Type | Rockfill |
| NID Height | 21 ft |
| Dam Height | 9 ft |
| Dam Length | 330 ft |
| Year Completed | 1885 (141 years old) |
Storage & Hydraulics
| NID Storage | 510 acre-ft |
| Max Storage | 510 acre-ft |
| Normal Storage | 383 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 800 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | PROVIDENCE WATER SUPPLY BOARD/CITY OF PROVIDENCE |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Emergency Action Plan | No |
Identifiers
| NID ID | RI01305 |
| Federal ID | RI01305 |
| More Info | State Dam Safety Program |