Big Lake
Big Lake is an earth dam located in Sevier County, Utah, built in 1979. It carries a Significant hazard potential classification.
About Big Lake
The primary purpose of Big Lake is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Glenwood Irrigation Company (private). It impounds the Water Creek Canyon near Glenwood.
The dam stands 19 feet tall and stretches 314 feet across, has a maximum storage capacity of 1,875 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1979, the structure is 47 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. An emergency action plan is in place for this dam. The most recent inspection on record was 07/14/2022.
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Location
| State | Utah |
| County | Sevier |
| Nearest City | Glenwood |
| River/Stream | Water Creek Canyon |
| Coordinates | 38.65813, -111.96797 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 19 ft |
| Dam Length | 314 ft |
| Year Completed | 1979 (47 years old) |
Storage & Hydraulics
| NID Storage | 1,875 acre-ft |
| Max Storage | 1,875 acre-ft |
| Normal Storage | 1,225 acre-ft |
| Drainage Area | 5 sq mi |
| Max Discharge | 34 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | GLENWOOD IRRIGATION COMPANY |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not Rated |
| Last Inspection | 07/14/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | UT00036 |
| Federal ID | UT00036 |
| More Info | State Dam Safety Program |