Mountain Lake Dam

HANSON BROOK· Carroll, New Hampshire· Concrete· 11 ft tall
Low Hazard Recreation State Government

Key Takeaway

Mountain Lake Dam is classified as low hazard in New Hampshire. Its primary use is recreation.

Physical Details

Dam Height 11 ft (taller than 23.8% in NH)
Dam Length150 ft
Dam TypeConcrete
Max Storage143 acre-ft
Normal Storage75 acre-ft
Surface Area12 acres
Drainage Area1 sq mi
Max Discharge1,020 cfs
Year Modified2000
NID IDNH01364

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: October 11, 2019
State Regulated: Yes
Regulatory Agency: NH DES

Ownership

NH FISH AND GAME DEPARTMENT

State Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Mountain Lake Dam?

Mountain Lake 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 Mountain Lake Dam?

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

What is the primary purpose of Mountain Lake Dam?

Mountain Lake 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 Mountain Lake Dam?

Mountain Lake Dam has a dam height of 11 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 Mountain Lake Dam last inspected?

Mountain Lake Dam was last inspected on October 11, 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.