Glen Rock Reservoir
Glen Rock Reservoir is a rockfill dam located in Washington County, Rhode Island, built in 1860. It carries a Significant hazard potential classification and has a fair condition assessment.
About Glen Rock Reservoir
Glen Rock Reservoir is a dam in Washington, Rhode Island. The dam is owned by Paul E.t. Drumm Iii (private). It impounds the Usquepaug River near South Kingstown.
The dam stands 8 feet tall and stretches 300 feet across, creates a reservoir covering 15 acres, has a maximum storage capacity of 125 acre-feet, and collects water from a drainage area of 33 square miles. Completed in 1860, the structure is one of the older dams in the region, with over a century and a half of service.
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.
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Location
| State | Rhode Island |
| County | Washington |
| Nearest City | South Kingstown |
| River/Stream | Usquepaug River |
| Coordinates | 41.50386, -71.60817 |
Physical Characteristics
| Dam Type | Rockfill |
| NID Height | 8 ft |
| Dam Height | 7 ft |
| Dam Length | 300 ft |
| Year Completed | 1860 (166 years old) |
Storage & Hydraulics
| NID Storage | 125 acre-ft |
| Max Storage | 125 acre-ft |
| Normal Storage | 110 acre-ft |
| Surface Area | 15 acres |
| Drainage Area | 33 sq mi |
| Max Discharge | 371 cfs |
Ownership & Safety
| Purpose | Other |
| Owner | PAUL E.T. DRUMM III |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Emergency Action Plan | No |
Identifiers
| NID ID | RI03203 |
| Federal ID | RI03203 |
| More Info | State Dam Safety Program |