Howell is an earth dam located in Weston County, Wyoming, built in 1946. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 25 ft25 ft tall and 1,220 ft long, taller than 50% 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 Howell
The primary purpose of Howell is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Craig M. & Jolene M. Deveraux (private). It impounds the Black Tail Creek near Edgemont, Sd.
The dam stands 25 feet tall and stretches 1,220 feet across, creates a reservoir covering 75 acres, has a maximum storage capacity of 840 acre-feet, and collects water from a drainage area of 13 square miles. Completed in 1946, 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 06/08/2023.
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Location
| State | Wyoming |
| County | Weston |
| Nearest City | Edgemont, Sd |
| River/Stream | Black Tail Creek |
| Coordinates | 43.74810, -104.18570 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 23 ft |
| Dam Length | 1,220 ft |
| Year Completed | 1946 (80 years old) |
Storage & Hydraulics
| NID Storage | 840 acre-ft |
| Max Storage | 840 acre-ft |
| Normal Storage | 661 acre-ft |
| Surface Area | 75 acres |
| Drainage Area | 13 sq mi |
| Max Discharge | 1,735 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Craig M. & Jolene M. Deveraux |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 06/08/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00718 |
| Federal ID | WY00718 |
| More Info | State Dam Safety Program |