Manville
Manville is a masonry dam located in Providence County, Rhode Island, built in 1860. It carries a Low hazard potential classification and has a poor condition assessment.
About Manville
Manville is a dam in Providence, Rhode Island. The dam is owned by Cumberland, Town Of (local government). It impounds the Blackstone River near Cumberland.
The dam stands 22 feet tall and stretches 250 feet across, creates a reservoir covering 58 acres, has a maximum storage capacity of 349 acre-feet, and collects water from a drainage area of 408 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 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 | Cumberland |
| River/Stream | Blackstone River |
| Coordinates | 41.97149, -71.47070 |
Physical Characteristics
| Dam Type | Masonry |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 250 ft |
| Year Completed | 1860 (166 years old) |
Storage & Hydraulics
| NID Storage | 349 acre-ft |
| Max Storage | 349 acre-ft |
| Normal Storage | 254 acre-ft |
| Surface Area | 58 acres |
| Drainage Area | 408 sq mi |
| Max Discharge | 14,000 cfs |
Ownership & Safety
| Owner | CUMBERLAND, TOWN OF |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Emergency Action Plan | No |
Identifiers
| NID ID | RI00809 |
| Federal ID | RI00809 |
| More Info | State Dam Safety Program |