Hays is an earth dam located in Fremont County, Wyoming, built in 1918. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 20 ft20 ft tall and 793 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Hays
The primary purpose of Hays is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Wind River Indian Res. (w. Mesghinna) (private). It impounds the Dry Creek-off Channel near See Remarks.
The dam stands 20 feet tall and stretches 793 feet across, creates a reservoir covering 50 acres, and has a maximum storage capacity of 557 acre-feet. Completed in 1918, 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 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 07/03/2024.
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Location
| State | Wyoming |
| County | Fremont |
| Nearest City | See Remarks |
| River/Stream | Dry Creek-off Channel |
| Coordinates | 43.27944, -108.96500 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 793 ft |
| Year Completed | 1918 (108 years old) |
Storage & Hydraulics
| NID Storage | 557 acre-ft |
| Max Storage | 557 acre-ft |
| Normal Storage | 418 acre-ft |
| Surface Area | 50 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Wind River Indian Res. (w. Mesghinna) |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 07/03/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00897 |
| Federal ID | WY00897 |
| More Info | State Dam Safety Program |