Cottonwood
Cottonwood is an earth dam located in Uinta County, Wyoming, built in 1919. It carries a Low hazard potential classification and has a fair condition assessment.
About Cottonwood
The primary purpose of Cottonwood is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Wesley Glenn & Ashlee Sibert (private). It impounds the Cottonwood & Three Mile Cks near Fort Bridger Military Res.
The dam stands 13 feet tall and stretches 845 feet across, creates a reservoir covering 76 acres, and has a maximum storage capacity of 124 acre-feet. Completed in 1919, 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 04/11/2025.
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Location
| State | Wyoming |
| County | Uinta |
| Nearest City | Fort Bridger Military Res |
| River/Stream | Cottonwood & Three Mile Cks |
| Coordinates | 41.26333, -110.47500 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 13 ft |
| Dam Height | 13 ft |
| Dam Length | 845 ft |
| Year Completed | 1919 (107 years old) |
Storage & Hydraulics
| NID Storage | 124 acre-ft |
| Max Storage | 124 acre-ft |
| Normal Storage | 93 acre-ft |
| Surface Area | 76 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | WESLEY GLENN & ASHLEE SIBERT |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 04/11/2025 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01257 |
| Federal ID | WY01257 |
| More Info | State Dam Safety Program |