Coffin Pond Dam

TR GALE RIVER· Grafton, New Hampshire· Built 1960· Earth· 10 ft tall
Low Hazard Recreation State Government

Key Takeaway

Coffin Pond Dam is classified as low hazard in New Hampshire. It was completed in 1960 and is 66 years old. Its primary use is recreation.

Physical Details

Dam Height 10 ft (taller than 16% in NH)
Dam Length320 ft
Dam TypeEarth
Max Storage96 acre-ft
Normal Storage32 acre-ft
Surface Area16 acres
Drainage Area0 sq mi
Max Discharge194 cfs
Year Completed1960 (66 years old)
NID IDNH00574

Safety Information

Low Hazard

No probable loss of human life and low economic/environmental losses expected.

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

Emergency Action Plan: No
Last Inspection: August 28, 2019
State Regulated: Yes
Regulatory Agency: NH DES

Ownership

NH FISH AND GAME DEPARTMENT

State Government

Nearby Dams

Baker Brook Pond Dam

Grafton, NH

Significant Hazard 11 ft

Apthorp

Grafton, NH

Significant Hazard 24 ft

Dells Pond Outlet Dam

Grafton, NH

High Hazard 20 ft

Echo Lake Dam

Grafton, NH

Low Hazard 7 ft

Bethlehem Sewage Lagoon Dam

Grafton, NH

Significant Hazard 13 ft

Pearl Lake Dam

Grafton, NH

Low Hazard 10 ft

Bethlehem Dam

Grafton, NH

Low Hazard 29 ft

Chandler Pond Dam

Grafton, NH

Significant Hazard 14 ft

Frequently Asked Questions

What is the hazard classification of Coffin Pond Dam?

Coffin Pond Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Coffin Pond Dam?

Coffin Pond Dam is owned by NH FISH AND GAME DEPARTMENT (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Coffin Pond Dam built?

Coffin Pond Dam was completed in 1960, making it 66 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 Coffin Pond Dam?

Coffin 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 Coffin Pond Dam?

Coffin Pond Dam has a dam height of 10 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 Coffin Pond Dam last inspected?

Coffin Pond Dam was last inspected on August 28, 2019. 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.