Hirsig No. 4

NORTH BEAR CREEK· Laramie, Wyoming· Built 1974· Earth· 27 ft tall
Low Hazard Fish And Wildlife Pond Irrigation Private

Key Takeaway

Hirsig No. 4 is classified as low hazard in Wyoming. It was completed in 1974 and is 52 years old. Its primary use is fish and wildlife pond.

Physical Details

Dam Height 27 ft (taller than 50.7% in WY)
Dam Length520 ft
Dam TypeEarth
Max Storage58 acre-ft
Normal Storage33 acre-ft
Surface Area5 acres
Drainage Area3 sq mi
Max Discharge2,247 cfs
Year Completed1974 (52 years old)
NID IDWY01319

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 13, 2019
State Regulated: Yes
Regulatory Agency: SEO

Ownership

TRUE RANCHES LLC

Private

Nearby Dams

Hirsig No. 2

Laramie, WY

Low Hazard 28 ft

Hirsig No. 1

Laramie, WY

Low Hazard 28 ft

Hirsig No. 3

Laramie, WY

Low Hazard 30 ft

Hirsig Enl. of R. P. Allen No. 1

Laramie, WY

Low Hazard 25 ft

Hugh Mcdonald

Platte, WY

Low Hazard 37 ft

Morrison No. 2

Platte, WY

Low Hazard 32 ft

Jordan No. 1

Laramie, WY

Low Hazard 36 ft

Miller No. 2

Platte, WY

Low Hazard 29 ft

Frequently Asked Questions

What is the hazard classification of Hirsig No. 4?

Hirsig No. 4 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 Hirsig No. 4?

Hirsig No. 4 is owned by TRUE RANCHES LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Hirsig No. 4 built?

Hirsig No. 4 was completed in 1974, making it 52 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 Hirsig No. 4?

Hirsig No. 4 serves the following purposes: Fish And Wildlife Pond, Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Hirsig No. 4?

Hirsig No. 4 has a dam height of 27 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 Hirsig No. 4 last inspected?

Hirsig No. 4 was last inspected on August 13, 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.