Pyramid Dam

PYRAMID DRAW· Washakie, Wyoming· Built 2003· Gravity·
Low Hazard Other Federal Government

Key Takeaway

Pyramid Dam is classified as low hazard in Wyoming. It was completed in 2003 and is 23 years old. Its primary use is other.

Physical Details

Dam Length268 ft
Dam TypeGravity
Max Storage59 acre-ft
Normal Storage30 acre-ft
Surface Area5 acres
Drainage Area640 sq mi
Year Completed2003 (23 years old)
NID IDWY01815

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 1, 2016
State Regulated: Yes
Regulatory Agency: SEO

Ownership

DOI BLM

Federal Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Pyramid Dam?

Pyramid 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 Pyramid Dam?

Pyramid Dam is owned by DOI BLM (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Pyramid Dam built?

Pyramid Dam was completed in 2003, making it 23 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 Pyramid Dam?

Pyramid Dam serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

When was Pyramid Dam last inspected?

Pyramid Dam was last inspected on August 1, 2016. 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.