Moon Reservoir
Moon Reservoir is an earth dam located in Harney County, Oregon, built in 1969. It carries a Significant hazard potential classification.
About Moon Reservoir
The primary purpose of Moon Reservoir is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Sagehen Land Company/ketscher Cattle Co (private). It impounds the Silver Creek near No Downstream Settlement.
The dam stands 38 feet tall and stretches 1,140 feet across, creates a reservoir covering 0 acres, has a maximum storage capacity of 5,650 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1969, the structure is well into its service life at over 50 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. The most recent inspection on record was 06/18/2019.
At 38 feet, this dam is taller than 85% of dams nationwide.
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Location
| State | Oregon |
| County | Harney |
| Nearest City | No Downstream Settlement |
| River/Stream | Silver Creek |
| Coordinates | 43.40623, -119.39803 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 38 ft |
| Dam Height | 38 ft |
| Dam Length | 1,140 ft |
| Year Completed | 1969 (57 years old) |
Storage & Hydraulics
| NID Storage | 5,650 acre-ft |
| Max Storage | 5,650 acre-ft |
| Normal Storage | 5,650 acre-ft |
| Surface Area | 0 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 974 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | SAGEHEN LAND COMPANY/KETSCHER CATTLE CO |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not Rated |
| Last Inspection | 06/18/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OR00483 |
| Federal ID | OR00483 |
| More Info | State Dam Safety Program |