Hoop Lake is an earth dam located in Summit County, Utah, built in 1939. It carries a Significant hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 824 ft long, taller than 68% 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 Hoop Lake
The primary purpose of Hoop Lake is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Hoop Lake Reservoir & Irrigation Co (private). It impounds the East Fork of Beaver Creek near Lonetree Wyoming.
The dam stands 30 feet tall and stretches 824 feet across, has a maximum storage capacity of 4,800 acre-feet, and collects water from a drainage area of 25 square miles. Completed in 1939, the structure is well-established, with more than 75 years of service.
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 07/26/2023.
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Location
| State | Utah |
| County | Summit |
| Nearest City | Lonetree Wyoming |
| River/Stream | East Fork of Beaver Creek |
| Coordinates | 40.92519, -110.12571 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Length | 824 ft |
| Year Completed | 1939 (87 years old) |
Storage & Hydraulics
| NID Storage | 4,800 acre-ft |
| Max Storage | 4,800 acre-ft |
| Normal Storage | 3,925 acre-ft |
| Drainage Area | 25 sq mi |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Hoop Lake Reservoir & Irrigation Co |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 07/26/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | UT00143 |
| Federal ID | UT00143 |
| More Info | State Dam Safety Program |