Moccasin Lake is an earth dam located in Duchesne County, Utah, built in 1923. It carries a Low hazard potential classification.
Dam profile
NID height · 15 ft15 ft tall and 797 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 Moccasin Lake
The primary purpose of Moccasin Lake is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Whiterocks Irrigation Co (private). It impounds the Whiterocks River near Whiterocks.
The dam stands 15 feet tall and stretches 797 feet across, has a maximum storage capacity of 113 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1923, 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. The most recent inspection on record was 07/14/2003. That was over 23 years ago.
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Location
| State | Utah |
| County | Duchesne |
| Nearest City | Whiterocks |
| River/Stream | Whiterocks River |
| Coordinates | 40.79352, -110.01071 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Length | 797 ft |
| Year Completed | 1923 (103 years old) |
Storage & Hydraulics
| NID Storage | 113 acre-ft |
| Max Storage | 113 acre-ft |
| Normal Storage | 90 acre-ft |
| Drainage Area | 1 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Whiterocks Irrigation Co |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 07/14/2003 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | UT00213 |
| Federal ID | UT00213 |
| More Info | State Dam Safety Program |