Sylvester Pond is an earth dam located in Providence County, Rhode Island, built in 1922. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 29 ft29 ft tall and 256 ft long, taller than 65% of U.S. dams with a recorded height. 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 Sylvester Pond
Sylvester Pond is a dam in Providence, Rhode Island. The dam is owned by Woonsocket, City of (local government). It impounds the Ironmine Brook near Woonsocket.
The dam stands 29 feet tall and stretches 256 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 81 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1922, the structure is over a century old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected 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 | Woonsocket |
| River/Stream | Ironmine Brook |
| Coordinates | 42.00192, -71.49540 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 29 ft |
| Dam Height | 24 ft |
| Dam Length | 256 ft |
| Year Completed | 1922 (104 years old) |
Storage & Hydraulics
| NID Storage | 81 acre-ft |
| Max Storage | 81 acre-ft |
| Normal Storage | 70 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 113 cfs |
Ownership & Safety
| Purpose | Other |
| Owner | Woonsocket, City of |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Emergency Action Plan | No |
Identifiers
| NID ID | RI04380 |
| Federal ID | RI04380 |
| More Info | State Dam Safety Program |