Brannan No. 2 is an earth dam located in Sweetwater County, Wyoming, built in 1937. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 8 ft8 ft tall and 2,585 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 Brannan No. 2
The primary purpose of Brannan No. 2 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Blair & Hay Land & Livestock Company (private). It impounds the Bear Creek.
The dam stands 8 feet tall and stretches 2,585 feet across, creates a reservoir covering 111 acres, and has a maximum storage capacity of 401 acre-feet. Completed in 1937, 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 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 | Bear Creek |
| Coordinates | 42.15850, -108.50330 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 8 ft |
| Dam Height | 8 ft |
| Dam Length | 2,585 ft |
| Year Completed | 1937 (89 years old) |
Storage & Hydraulics
| NID Storage | 401 acre-ft |
| Max Storage | 401 acre-ft |
| Normal Storage | 375 acre-ft |
| Surface Area | 111 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Blair & Hay Land & Livestock Company |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 05/16/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01223 |
| Federal ID | WY01223 |
| More Info | State Dam Safety Program |