W.r. Hamilton No. 2
W.r. Hamilton No. 2 is an earth dam located in Converse County, Wyoming, built in 1917. It carries a Low hazard potential classification and has a poor condition assessment.
About W.r. Hamilton No. 2
The primary purpose of W.r. Hamilton 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 Smith Land Company (private). It impounds the Sage Creek near Orpha.
The dam stands 20 feet tall and stretches 2,030 feet across, creates a reservoir covering 82 acres, and has a maximum storage capacity of 667 acre-feet. Completed in 1917, 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 04/05/2021.
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Location
| State | Wyoming |
| County | Converse |
| Nearest City | Orpha |
| River/Stream | Sage Creek |
| Coordinates | 42.89400, -105.55440 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 2,030 ft |
| Year Completed | 1917 (109 years old) |
Storage & Hydraulics
| NID Storage | 667 acre-ft |
| Max Storage | 667 acre-ft |
| Normal Storage | 596 acre-ft |
| Surface Area | 82 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | SMITH LAND COMPANY |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 04/05/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00375 |
| Federal ID | WY00375 |
| More Info | State Dam Safety Program |