Carpenter Reservoir Dike is an earth dam located in Worcester County, Massachusetts, built in 1888. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 28 ft28 ft tall and 280 ft long, taller than 62% 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 Carpenter Reservoir Dike
The primary purpose of Carpenter Reservoir Dike is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Whitinsville Water Company (private). It impounds the Mumford River near Northbridge.
The dam stands 28 feet tall and stretches 280 feet across, creates a reservoir covering 79 acres, has a maximum storage capacity of 2,271 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1888, 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. The most recent inspection on record was 11/20/2020.
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Location
| State | Massachusetts |
| County | Worcester |
| Nearest City | Northbridge |
| River/Stream | Mumford River |
| Coordinates | 42.12534, -71.68279 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Length | 280 ft |
| Year Completed | 1888 (138 years old) |
Storage & Hydraulics
| NID Storage | 2,271 acre-ft |
| Max Storage | 2,271 acre-ft |
| Normal Storage | 2,218 acre-ft |
| Surface Area | 79 acres |
| Drainage Area | 5 sq mi |
| Spillway Type | None |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Whitinsville Water Company |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 11/20/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MA00943 |
| Federal ID | MA00893S001 |
| More Info | State Dam Safety Program |