Walters
Walters is an earth dam located in Big Horn County, Wyoming, built in 1978. It carries a Low hazard potential classification and has a poor condition assessment.
About Walters
The primary purpose of Walters is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Hamilton Ranch, Inc. (private). It impounds the Alkali Creek near Manderson.
The dam stands 26 feet tall and stretches 600 feet across, creates a reservoir covering 52 acres, has a maximum storage capacity of 638 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1978, the structure is 48 years 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 04/15/2025.
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Location
| State | Wyoming |
| County | Big Horn |
| Nearest City | Manderson |
| River/Stream | Alkali Creek |
| Coordinates | 44.30880, -107.62820 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 25 ft |
| Dam Length | 600 ft |
| Year Completed | 1978 (48 years old) |
Storage & Hydraulics
| NID Storage | 638 acre-ft |
| Max Storage | 638 acre-ft |
| Normal Storage | 464 acre-ft |
| Surface Area | 52 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 100 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | HAMILTON RANCH, INC. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 04/15/2025 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01050 |
| Federal ID | WY01050 |
| More Info | State Dam Safety Program |