Three Mile Flat Reservoir
Three Mile Flat Reservoir is an earth dam located in Klamath County, Oregon, built in 1964. It carries a Low hazard potential classification.
About Three Mile Flat Reservoir
The primary purpose of Three Mile Flat 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 Dry Wash near No Downstream Settlement.
The dam stands 27 feet tall and stretches 3,100 feet across, creates a reservoir covering 140 acres, has a maximum storage capacity of 1,351 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1964, 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 08/03/2017.
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Location
| State | Oregon |
| County | Klamath |
| Nearest City | No Downstream Settlement |
| River/Stream | Dry Wash |
| Coordinates | 42.03939, -121.16522 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 25 ft |
| Dam Length | 3,100 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 1,351 acre-ft |
| Max Storage | 1,351 acre-ft |
| Normal Storage | 950 acre-ft |
| Surface Area | 140 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 928 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 | 08/03/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OR00186 |
| Federal ID | OR00186 |
| More Info | State Dam Safety Program |