Hamilton Reservoir is an earth dam located in Washington County, Rhode Island. It carries a Significant hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 10 ft10 ft tall and 200 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Hamilton Reservoir
The primary purpose of Hamilton Reservoir is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Dworman Associates, Ltd. (private). It impounds the Annaquatucket River near North Kingstown.
The dam stands 10 feet tall and stretches 200 feet across, creates a reservoir covering 9 acres, has a maximum storage capacity of 53 acre-feet, and collects water from a drainage area of 7 square miles.
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.
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Location
| State | Rhode Island |
| County | Washington |
| Nearest City | North Kingstown |
| River/Stream | Annaquatucket River |
| Coordinates | 41.55019, -71.44106 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 200 ft |
Storage & Hydraulics
| NID Storage | 53 acre-ft |
| Max Storage | 53 acre-ft |
| Normal Storage | 45 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 7 sq mi |
| Max Discharge | 730 cfs |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | Dworman Associates, Ltd. |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | RI04253 |
| Federal ID | RI04253 |
| More Info | State Dam Safety Program |