Chevron Gypsum
Chevron Gypsum is an earth dam located in Sweetwater County, Wyoming, built in 1986. It carries a Low hazard potential classification and has a fair condition assessment.
About Chevron Gypsum
Chevron Gypsum is a dam in Sweetwater, Wyoming. The dam is owned by Simplot Phosphates, Llc (private). It impounds the Jason Draw near Rock Springs.
The dam stands 67 feet tall and stretches 3,900 feet across, creates a reservoir covering 35 acres, has a storage capacity of 295 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1986, the structure is 40 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected 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. The most recent inspection on record was 06/27/2022.
At 67 feet, this dam is taller than 96% of all dams in the United States.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Wyoming |
| County | Sweetwater |
| Nearest City | Rock Springs |
| River/Stream | Jason Draw |
| Coordinates | 41.53670, -109.15960 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 67 ft |
| Dam Height | 53 ft |
| Dam Length | 3,900 ft |
| Year Completed | 1986 (40 years old) |
Storage & Hydraulics
| NID Storage | 295 acre-ft |
| Normal Storage | 295 acre-ft |
| Surface Area | 35 acres |
| Drainage Area | 1 sq mi |
| Spillway Type | None |
Ownership & Safety
| Purpose | Other |
| Owner | SIMPLOT PHOSPHATES, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 06/27/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01592 |
| Federal ID | WY01592 |
| More Info | State Dam Safety Program |