Hay
Hay is an earth dam located in Sweetwater County, Wyoming, built in 1907. It carries a Low hazard potential classification and has a poor condition assessment.
About Hay
The primary purpose of Hay is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by William H. Jolley (private). It impounds the Red Creek.
The dam stands 18 feet tall and stretches 950 feet across, creates a reservoir covering 1,037 acres, and has a maximum storage capacity of 5,847 acre-feet. Completed in 1907, the structure is over a century 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 05/16/2022.
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Location
| State | Wyoming |
| County | Sweetwater |
| Nearest City | None |
| River/Stream | Red Creek |
| Coordinates | 42.00860, -108.34190 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 950 ft |
| Year Completed | 1907 (119 years old) |
Storage & Hydraulics
| NID Storage | 5,847 acre-ft |
| Max Storage | 5,847 acre-ft |
| Normal Storage | 3,307 acre-ft |
| Surface Area | 1,037 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | WILLIAM H. JOLLEY |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 05/16/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01201 |
| Federal ID | WY01201 |
| More Info | State Dam Safety Program |