Larry's Last Chance

LARRY'S DRAW· Big Horn, Wyoming· Built 1965· Earth· 25 ft tall

Key Takeaway

Larry's Last Chance is classified as low hazard in Wyoming. It was completed in 1965 and is 61 years old. Its primary use is flood risk reduction.

Physical Details

Dam Height 25 ft (taller than 39.5% in WY)
Dam Length353 ft
Dam TypeEarth
Max Storage60 acre-ft
Normal Storage35 acre-ft
Surface Area5 acres
Drainage Area0 sq mi
Max Discharge227 cfs
Year Completed1965 (61 years old)
NID IDWY01735

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: June 29, 2017
State Regulated: Yes
Regulatory Agency: SEO

Ownership

USDI BLM

Federal Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Larry's Last Chance?

Larry's Last Chance 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 Larry's Last Chance?

Larry's Last Chance is owned by USDI BLM (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Larry's Last Chance built?

Larry's Last Chance was completed in 1965, making it 61 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 Larry's Last Chance?

Larry's Last Chance serves the following purposes: Flood Risk Reduction, 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 Larry's Last Chance?

Larry's Last Chance has a dam height of 25 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 Larry's Last Chance last inspected?

Larry's Last Chance was last inspected on June 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.