Pine Valley Reservoir
Pine Valley Reservoir is an earth dam located in Washington County, Utah, built in 1934. It carries a Significant hazard potential classification and has a poor condition assessment.
About Pine Valley Reservoir
The primary purpose of Pine Valley Reservoir is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Usda Fs (federal). It impounds the Santa Clara River near Pine Valley Ut.
The dam stands 45 feet tall and stretches 590 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 112 acre-feet, and collects water from a drainage area of 15 square miles. Completed in 1934, 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. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 04/03/2019.
At 45 feet, this dam is taller than 91% of dams nationwide.
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Location
| State | Utah |
| County | Washington |
| Nearest City | Pine Valley Ut |
| River/Stream | Santa Clara River |
| Coordinates | 37.37930, -113.47556 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 45 ft |
| Dam Height | 36 ft |
| Dam Length | 590 ft |
| Year Completed | 1934 (92 years old) |
Storage & Hydraulics
| NID Storage | 112 acre-ft |
| Max Storage | 112 acre-ft |
| Normal Storage | 50 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 15 sq mi |
| Max Discharge | 1,856 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | USDA FS |
| Owner Type | Federal |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 04/03/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | UT10102 |
| Federal ID | UT10102 |
| More Info | State Dam Safety Program |