Dome Lake is an earth dam located in Sheridan County, Wyoming, built in 1906. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 8 ft8 ft tall and 700 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 Dome Lake
The primary purpose of Dome Lake is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Dome Lake Reservoir Company (d. Roberts) (private). It impounds the West Fork Big Goose Creek near Beckton.
The dam stands 8 feet tall and stretches 700 feet across, creates a reservoir covering 101 acres, and has a storage capacity of 525 acre-feet. Completed in 1906, 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 09/17/2020.
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Location
| State | Wyoming |
| County | Sheridan |
| Nearest City | Beckton |
| River/Stream | West Fork Big Goose Creek |
| Coordinates | 44.58583, -107.29556 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 8 ft |
| Dam Height | 8 ft |
| Dam Length | 700 ft |
| Year Completed | 1906 (120 years old) |
Storage & Hydraulics
| NID Storage | 525 acre-ft |
| Normal Storage | 525 acre-ft |
| Surface Area | 101 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Dome Lake Reservoir Company (d. Roberts) |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 09/17/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00649 |
| Federal ID | WY00649 |
| More Info | State Dam Safety Program |