Willow Valley Reservoir
Willow Valley Reservoir is an earth dam located in Klamath County, Oregon, built in 1961. It carries a Low hazard potential classification.
About Willow Valley Reservoir
The primary purpose of Willow Valley Reservoir is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Willow Valley Ranch, C/o Darrel Bagley (private). It impounds the East Fork Lost River near Bonanza.
The dam stands 34 feet tall and stretches 2,980 feet across, creates a reservoir covering 127 acres, has a maximum storage capacity of 2,200 acre-feet, and collects water from a drainage area of 58 square miles. Completed in 1961, the structure is well into its service life at over 50 years 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 08/12/2015. That was over 10 years ago.
At 34 feet, this dam is taller than 80% of dams nationwide.
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Location
| State | Oregon |
| County | Klamath |
| Nearest City | Bonanza |
| River/Stream | East Fork Lost River |
| Coordinates | 42.00554, -121.11270 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Height | 34 ft |
| Dam Length | 2,980 ft |
| Year Completed | 1961 (65 years old) |
Storage & Hydraulics
| NID Storage | 2,200 acre-ft |
| Max Storage | 2,200 acre-ft |
| Normal Storage | 2,038 acre-ft |
| Surface Area | 127 acres |
| Drainage Area | 58 sq mi |
| Max Discharge | 4,050 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | WILLOW VALLEY RANCH, C/O DARREL BAGLEY |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 08/12/2015 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OR00376 |
| Federal ID | OR00376 |
| More Info | State Dam Safety Program |