Hoppin Hill Reservoir Dam

SEVEN MILE RIVER· Bristol, Massachusetts· Built 1910· Earth· 27 ft tall
High Hazard Water Supply Local Government

Key Takeaway

Hoppin Hill Reservoir Dam is classified as high hazard in Massachusetts. It was completed in 1910 and is 116 years old. Its primary use is water supply. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.

Physical Details

Dam Height 27 ft (taller than 82.9% in MA)
Dam Length1,100 ft
Dam TypeEarth
Max Storage441 acre-ft
Normal Storage244 acre-ft
Surface Area39 acres
Drainage Area1 sq mi
Year Completed1910 (116 years old)
NID IDMA00858

Safety Information

High Hazard

Loss of human life is likely if the dam fails.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: Yes
Last Inspection: November 22, 2016
State Regulated: Yes
Regulatory Agency: DEPARTMENT OF CONSERVATION AND RECREATION

Ownership

CITY OF ATTLEBORO, PUBLIC WORKS, HIGHWAY

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Hoppin Hill Reservoir Dam?

Hoppin Hill Reservoir Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Hoppin Hill Reservoir Dam?

Hoppin Hill Reservoir Dam is owned by CITY OF ATTLEBORO, PUBLIC WORKS, HIGHWAY (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Hoppin Hill Reservoir Dam built?

Hoppin Hill Reservoir Dam was completed in 1910, making it 116 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

What is the primary purpose of Hoppin Hill Reservoir Dam?

Hoppin Hill Reservoir Dam serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Hoppin Hill Reservoir Dam?

Hoppin Hill Reservoir Dam has a dam height of 27 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.

When was Hoppin Hill Reservoir Dam last inspected?

Hoppin Hill Reservoir Dam was last inspected on November 22, 2016. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.