Jim Bridger Power Plant Surge Pond
Jim Bridger Power Plant Surge Pond is an earth dam located in Sweetwater County, Wyoming, built in 1989. It carries a Significant hazard potential classification and has a fair condition assessment.
About Jim Bridger Power Plant Surge Pond
The primary purpose of Jim Bridger Power Plant Surge Pond is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Pacificorp (public utility). It impounds the Humphrey Draw near Point Of Rocks.
The dam stands 97 feet tall and stretches 810 feet across, creates a reservoir covering 96 acres, has a maximum storage capacity of 2,228 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1989, the structure is 37 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 04/15/2024.
At 97 feet, this dam is taller than 98% of all dams in the United States.
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Location
| State | Wyoming |
| County | Sweetwater |
| Nearest City | Point Of Rocks |
| River/Stream | Humphrey Draw |
| Coordinates | 41.73000, -108.78100 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 97 ft |
| Dam Height | 51 ft |
| Dam Length | 810 ft |
| Year Completed | 1989 (37 years old) |
Storage & Hydraulics
| NID Storage | 2,228 acre-ft |
| Max Storage | 2,228 acre-ft |
| Normal Storage | 1,592 acre-ft |
| Surface Area | 96 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 140 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | PACIFICORP |
| Owner Type | Public Utility |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 04/15/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WY01307 |
| Federal ID | WY01307 |
| More Info | State Dam Safety Program |