Sheep Mountain
Sheep Mountain is an earth dam located in Carbon County, Wyoming, built in 1946. It carries a Low hazard potential classification and has a fair condition assessment.
About Sheep Mountain
The primary purpose of Sheep Mountain is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Medicine Bow Inc (private). It impounds the Spring Creek near Slater, Colorado.
The dam stands 42 feet tall and stretches 610 feet across, creates a reservoir covering 35 acres, and has a maximum storage capacity of 438 acre-feet. Completed in 1946, the structure is well-established, with more than 75 years of service.
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 06/11/2025.
At 42 feet, this dam is taller than 89% of dams nationwide.
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Location
| State | Wyoming |
| County | Carbon |
| Nearest City | Slater, Colorado |
| River/Stream | Spring Creek |
| Coordinates | 41.01270, -107.16970 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 42 ft |
| Dam Height | 40 ft |
| Dam Length | 610 ft |
| Year Completed | 1946 (80 years old) |
Storage & Hydraulics
| NID Storage | 438 acre-ft |
| Max Storage | 438 acre-ft |
| Normal Storage | 325 acre-ft |
| Surface Area | 35 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | MEDICINE BOW INC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 06/11/2025 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00413 |
| Federal ID | WY00413 |
| More Info | State Dam Safety Program |