Rachou
Rachou is an earth dam located in Fremont County, Wyoming, built in 1940. It carries a Low hazard potential classification and has a poor condition assessment.
About Rachou
The primary purpose of Rachou is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Wind River Indian Res. (w. Mesghinna) (private). It impounds the Holland Creek.
The dam stands 25 feet tall and stretches 500 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 19 acre-feet, and collects water from a drainage area of 8 square miles. Completed in 1940, 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 06/04/2025.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Wyoming |
| County | Fremont |
| River/Stream | Holland Creek |
| Coordinates | 43.55580, -108.85350 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 22 ft |
| Dam Length | 500 ft |
| Year Completed | 1940 (86 years old) |
Storage & Hydraulics
| NID Storage | 19 acre-ft |
| Max Storage | 19 acre-ft |
| Normal Storage | 19 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 8 sq mi |
| Max Discharge | 700 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | WIND RIVER INDIAN RES. (W. MESGHINNA) |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 06/04/2025 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01816 |
| Federal ID | WY01816 |
| More Info | State Dam Safety Program |