Box Elder County- Holmes Canyon D.b. is an earth dam located in Box Elder County, Utah, built in 1985. It carries a Significant hazard potential classification.
Dam profile
NID height · 15 ft15 ft tall and 360 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 Box Elder County- Holmes Canyon D.b.
The primary purpose of Box Elder County- Holmes Canyon D.b. is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Box Elder County-willard City (local government). It impounds the Holmes Canyon near Willard.
The dam stands 15 feet tall and stretches 360 feet across, and collects water from a drainage area of 1 square miles. Completed in 1985, the structure is 41 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. The most recent inspection on record was 04/14/2021.
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Location
| State | Utah |
| County | Box Elder |
| Nearest City | Willard |
| River/Stream | Holmes Canyon |
| Coordinates | 41.39689, -112.03041 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Length | 360 ft |
| Year Completed | 1985 (41 years old) |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Box Elder County-willard City |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 04/14/2021 |
| Emergency Action Plan | No |
Identifiers
| NID ID | UT00583 |
| Federal ID | UT00583 |
| More Info | State Dam Safety Program |