Hansen
Hansen is an earth dam located in Carbon County, Wyoming, built in 1922. It carries a Low hazard potential classification and has a poor condition assessment.
About Hansen
The primary purpose of Hansen is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by P.h. Livestock Co. (niles Hansen) (private). It impounds the Fillmore Creek near I-80.
The dam stands 16 feet tall and stretches 1,050 feet across, creates a reservoir covering 45 acres, and has a maximum storage capacity of 351 acre-feet. Completed in 1922, 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 06/10/2025.
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Location
| State | Wyoming |
| County | Carbon |
| Nearest City | I-80 |
| River/Stream | Fillmore Creek |
| Coordinates | 41.56230, -107.57650 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 1,050 ft |
| Year Completed | 1922 (104 years old) |
Storage & Hydraulics
| NID Storage | 351 acre-ft |
| Max Storage | 351 acre-ft |
| Normal Storage | 261 acre-ft |
| Surface Area | 45 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | P.H. LIVESTOCK CO. (NILES HANSEN) |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 06/10/2025 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01978 |
| Federal ID | WY01978 |
| More Info | State Dam Safety Program |