Hewes No. 1 is an earth dam located in Crook County, Wyoming, built in 1986. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 15 ft15 ft tall and 758 ft long. 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 Hewes No. 1
The primary purpose of Hewes No. 1 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Monte J. & Tanja M. Miller (private). It impounds the South Beaver Creek.
The dam stands 15 feet tall and stretches 758 feet across, creates a reservoir covering 18 acres, has a storage capacity of 90 acre-feet, and collects water from a drainage area of 37 square miles. Completed in 1986, the structure is 40 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 04/28/2021.
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Location
| State | Wyoming |
| County | Crook |
| River/Stream | South Beaver Creek |
| Coordinates | 44.32990, -104.47040 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 758 ft |
| Year Completed | 1986 (40 years old) |
Storage & Hydraulics
| NID Storage | 90 acre-ft |
| Normal Storage | 90 acre-ft |
| Surface Area | 18 acres |
| Drainage Area | 37 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Monte J. & Tanja M. Miller |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 04/28/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01691 |
| Federal ID | WY01691 |
| More Info | State Dam Safety Program |