Adobe Wash Sediment Basin is an earth dam located in Emery County, Utah, built in 2017. It carries a Significant hazard potential classification.
Dam profile
NID height · 34 ft34 ft tall and 360 ft long, taller than 78% 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 Adobe Wash Sediment Basin
The primary purpose of Adobe Wash Sediment Basin 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 Cottonwood Creek Consolidated Irrigation (private).
The dam stands 34 feet tall and stretches 360 feet across, has a maximum storage capacity of 78 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 2017, the structure is relatively new.
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. An emergency action plan is in place for this dam. The most recent inspection on record was 10/10/2023.
At 34 feet, this dam is taller than 78% of dams nationwide.
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Location
| State | Utah |
| County | Emery |
| Nearest City | Orangeville |
| Coordinates | 39.23401, -111.08452 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Length | 360 ft |
| Year Completed | 2017 (9 years old) |
Storage & Hydraulics
| NID Storage | 78 acre-ft |
| Max Storage | 78 acre-ft |
| Normal Storage | 64 acre-ft |
| Drainage Area | 1 sq mi |
| Max Discharge | 130 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Cottonwood Creek Consolidated Irrigation |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 10/10/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | UT53886 |
| Federal ID | UT53886 |
| More Info | State Dam Safety Program |