Dimond Pond Dam

COLBY BROOK· Rockingham, New Hampshire· Built 1880· Concrete· 12 ft tall
Unknown Recreation Private

Key Takeaway

Dimond Pond Dam is classified as unknown in New Hampshire. It was completed in 1880 and is 146 years old. Its primary use is recreation.

Physical Details

Dam Height 12 ft (taller than 28.2% in NH)
Dam Length109 ft
Dam TypeConcrete
Max Storage53 acre-ft
Normal Storage24 acre-ft
Surface Area13 acres
Drainage Area2 sq mi
Year Completed1880 (146 years old)
Year Modified1979
NID IDNH01651

Safety Information

Unknown

Hazard potential has not been determined.

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

Emergency Action Plan: No
Last Inspection: December 4, 2017
State Regulated: Yes
Regulatory Agency: NH DES

Ownership

WESTON REALTY TRUST

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Dimond Pond Dam?

Dimond Pond Dam is classified as Unknown. Hazard potential has not been determined. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Dimond Pond Dam?

Dimond Pond Dam is owned by WESTON REALTY TRUST (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Dimond Pond Dam built?

Dimond Pond Dam was completed in 1880, making it 146 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 Dimond Pond Dam?

Dimond Pond Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Dimond Pond Dam?

Dimond Pond Dam has a dam height of 12 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 Dimond Pond Dam last inspected?

Dimond Pond Dam was last inspected on December 4, 2017. 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.