Slatersville Reservoir Lower
Slatersville Reservoir Lower is a rockfill dam located in Providence County, Rhode Island, built in 1886. It carries a Significant hazard potential classification and has a fair condition assessment.
About Slatersville Reservoir Lower
Slatersville Reservoir Lower is a dam in Providence, Rhode Island. The dam is owned by Dudley Development Corp. (private). It impounds the Branch River near North Smithfield.
The dam stands 18 feet tall and stretches 320 feet across, creates a reservoir covering 40 acres, has a maximum storage capacity of 328 acre-feet, and collects water from a drainage area of 94 square miles. Completed in 1886, 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 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 | Providence |
| Nearest City | North Smithfield |
| River/Stream | Branch River |
| Coordinates | 41.99895, -71.58051 |
Physical Characteristics
| Dam Type | Rockfill |
| NID Height | 18 ft |
| Dam Height | 15 ft |
| Dam Length | 320 ft |
| Year Completed | 1886 (140 years old) |
Storage & Hydraulics
| NID Storage | 328 acre-ft |
| Max Storage | 328 acre-ft |
| Normal Storage | 208 acre-ft |
| Surface Area | 40 acres |
| Drainage Area | 94 sq mi |
| Max Discharge | 8,550 cfs |
Ownership & Safety
| Owner | DUDLEY DEVELOPMENT CORP. |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Emergency Action Plan | No |
Identifiers
| NID ID | RI02503 |
| Federal ID | RI02503 |
| More Info | State Dam Safety Program |