Adams #2 is an earth dam located in Hot Springs County, Wyoming, built in 1918. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 28 ft28 ft tall and 550 ft long, taller than 62% of U.S. dams with a recorded height. 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 Adams #2
The primary purpose of Adams #2 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Martinez Ranch LLC C/o Betty Jean Martinez (private). It impounds the N Fork Owl Creek.
The dam stands 28 feet tall and stretches 550 feet across, creates a reservoir covering 22 acres, and has a maximum storage capacity of 260 acre-feet. Completed in 1918, 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 07/29/2025.
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Location
| State | Wyoming |
| County | Hot Springs |
| River/Stream | N Fork Owl Creek |
| Coordinates | 43.70190, -108.82470 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 550 ft |
| Year Completed | 1918 (108 years old) |
Storage & Hydraulics
| NID Storage | 260 acre-ft |
| Max Storage | 260 acre-ft |
| Normal Storage | 128 acre-ft |
| Surface Area | 22 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Martinez Ranch LLC C/o Betty Jean Martinez |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 07/29/2025 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00959 |
| Federal ID | WY00959 |
| More Info | State Dam Safety Program |