Turtle Pond Dam

TR MILL BROOK· Merrimack, New Hampshire· Built 1932· Earth· 8 ft tall
Low Hazard Recreation Local Government

Key Takeaway

Turtle Pond Dam is classified as low hazard in New Hampshire. It was completed in 1932 and is 94 years old. Its primary use is recreation.

Physical Details

Dam Height 8 ft (taller than 5% in NH)
Dam Length125 ft
Dam TypeEarth
Max Storage864 acre-ft
Normal Storage201 acre-ft
Surface Area159 acres
Drainage Area5 sq mi
Max Discharge427 cfs
Year Completed1932 (94 years old)
NID IDNH00364

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: September 29, 2017
State Regulated: Yes
Regulatory Agency: NH DES

Ownership

CITY OF CONCORD

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Turtle Pond Dam?

Turtle 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 Turtle Pond Dam?

Turtle Pond Dam is owned by CITY OF CONCORD (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Turtle Pond Dam built?

Turtle Pond Dam was completed in 1932, making it 94 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 Turtle Pond Dam?

Turtle 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 Turtle Pond Dam?

Turtle Pond Dam has a dam height of 8 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 Turtle Pond Dam last inspected?

Turtle Pond Dam was last inspected on September 29, 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.