Heywood Reservoir Dam is an earth dam located in Worcester County, Massachusetts, built in 1926. It carries a Significant hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 28 ft28 ft tall and 560 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 Heywood Reservoir Dam
Heywood Reservoir Dam is a dam in Worcester, Massachusetts. The dam is owned by Town of Clinton (local government). It impounds the Wekepeke Brook near Sterling.
The dam stands 28 feet tall and stretches 560 feet across, creates a reservoir covering 37 acres, has a maximum storage capacity of 446 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1926, the structure is well-established, with more than 75 years of service.
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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 05/19/2021.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Massachusetts |
| County | Worcester |
| Nearest City | Sterling |
| River/Stream | Wekepeke Brook |
| Coordinates | 42.48062, -71.78073 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Length | 560 ft |
| Year Completed | 1926 (100 years old) |
Storage & Hydraulics
| NID Storage | 446 acre-ft |
| Max Storage | 446 acre-ft |
| Normal Storage | 289 acre-ft |
| Surface Area | 37 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 340 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Owner | Town of Clinton |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 05/19/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA00868 |
| Federal ID | MA00868 |
| More Info | State Dam Safety Program |