Jim Bridger Power Plant Surge Pond

HUMPHREY DRAW· Sweetwater, Wyoming· Built 1989· Earth· 51 ft tall
Significant Hazard Water Supply Other Public Utility

Key Takeaway

Jim Bridger Power Plant Surge Pond is classified as significant hazard in Wyoming. It was completed in 1989 and is 37 years old. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 51 ft (taller than 94.3% in WY)
Dam Length810 ft
Dam TypeEarth
Max Storage2.2K acre-ft
Normal Storage1.6K acre-ft
Surface Area96 acres
Drainage Area4 sq mi
Max Discharge140 cfs
Year Completed1989 (37 years old)
Year Modified1989
NID IDWY01307

Safety Information

Significant Hazard

No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: No
Last Inspection: October 17, 2019
State Regulated: Yes
Regulatory Agency: SEO

Ownership

PACIFICORP

Public Utility

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Jim Bridger Power Plant Surge Pond?

Jim Bridger Power Plant Surge Pond is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Jim Bridger Power Plant Surge Pond?

Jim Bridger Power Plant Surge Pond is owned by PACIFICORP (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Jim Bridger Power Plant Surge Pond built?

Jim Bridger Power Plant Surge Pond was completed in 1989, making it 37 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 Jim Bridger Power Plant Surge Pond?

Jim Bridger Power Plant Surge Pond serves the following purposes: Water Supply, Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Jim Bridger Power Plant Surge Pond?

Jim Bridger Power Plant Surge Pond has a dam height of 51 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 Jim Bridger Power Plant Surge Pond last inspected?

Jim Bridger Power Plant Surge Pond was last inspected on October 17, 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.