Larson #3

STEIGER CREEK· Custer, Montana· Built 1955· Earth· 14 ft tall
Low Hazard Fire Protection Stock Or Small Fish Pond Private

Key Takeaway

Larson #3 is classified as low hazard in Montana. It was completed in 1955 and is 71 years old. Its primary use is fire protection.

Physical Details

Dam Height 14 ft (taller than 15.6% in MT)
Dam Length350 ft
Dam TypeEarth
Max Storage52 acre-ft
Normal Storage17 acre-ft
Year Completed1955 (71 years old)
NID IDMT01643

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
State Regulated: Yes
Regulatory Agency: DNRC

Ownership

CLIFF LARSON

Private

Nearby Dams

Larson #2

Custer, MT

Low Hazard 19 ft

Clark (Custer)

Custer, MT

Low Hazard 16 ft

Monarch #3

Custer, MT

Low Hazard 24 ft

Whitetail (Custer)

Custer, MT

Low Hazard 20 ft

Hook #2

Custer, MT

Low Hazard 14 ft

French #2

Custer, MT

Low Hazard 30 ft

French #5

Custer, MT

Low Hazard 17 ft

French #18

Custer, MT

Low Hazard 18 ft

Frequently Asked Questions

What is the hazard classification of Larson #3?

Larson #3 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 Larson #3?

Larson #3 is owned by CLIFF LARSON (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Larson #3 built?

Larson #3 was completed in 1955, making it 71 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 Larson #3?

Larson #3 serves the following purposes: Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Larson #3?

Larson #3 has a dam height of 14 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.

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.