Carpenter Reservoir Dam
Carpenter Reservoir Dam is an earth dam located in Worcester County, Massachusetts, built in 1888. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Carpenter Reservoir Dam
The primary purpose of Carpenter Reservoir Dam 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 Casey Brook near Northbridge.
The dam stands 32 feet tall and stretches 260 feet across, creates a reservoir covering 82 acres, has a maximum storage capacity of 2,640 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 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 06/29/2021.
At 32 feet, this dam is taller than 76% of dams nationwide.
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Location
| State | Massachusetts |
| County | Worcester |
| Nearest City | Northbridge |
| River/Stream | Casey Brook |
| Coordinates | 42.12495, -71.69030 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 32 ft |
| Dam Length | 260 ft |
| Year Completed | 1888 (138 years old) |
Storage & Hydraulics
| NID Storage | 2,640 acre-ft |
| Max Storage | 2,640 acre-ft |
| Normal Storage | 2,421 acre-ft |
| Surface Area | 82 acres |
| Drainage Area | 5 sq mi |
| Max Discharge | 1,677 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Whitinsville Water Company |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/29/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA00893 |
| Federal ID | MA00893 |
| More Info | State Dam Safety Program |