West Hill Dam - Dike D
West Hill Dam - Dike D is a gravity dam located in Worcester County, Massachusetts, built in 1961. It carries a High hazard potential classification.
About West Hill Dam - Dike D
The primary purpose of West Hill Dam - Dike D is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Usace - New England District (federal). It impounds the West River near Uxbridge.
The dam stands 48 feet tall and stretches 2,400 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 29,500 acre-feet, and collects water from a drainage area of 28 square miles. Completed in 1961, the structure is well into its service life at over 50 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. An emergency action plan is in place for this dam. The most recent inspection on record was 06/15/2021.
At 48 feet, this dam is taller than 92% of dams nationwide.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Massachusetts dam safety program can provide more specific information about emergency planning for this structure.
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 | Uxbridge |
| River/Stream | West River |
| Coordinates | 42.10500, -71.60500 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 48 ft |
| Dam Height | 48 ft |
| Dam Length | 2,400 ft |
| Year Completed | 1961 (65 years old) |
Storage & Hydraulics
| NID Storage | 29,500 acre-ft |
| Max Storage | 29,500 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 28 sq mi |
| Max Discharge | 8,900 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | USACE - New England District |
| Owner Type | Federal |
| Hazard Classification | High |
| Condition Assessment | Not Available |
| Last Inspection | 06/15/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA00971 |
| Federal ID | MA00971S001 |
| More Info | State Dam Safety Program |