Oriana Reservoir
Oriana Reservoir is a gravity dam located in Harney County, Oregon, built in 1931. It carries a Low hazard potential classification.
About Oriana Reservoir
The primary purpose of Oriana Reservoir is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Pueblo Mountain Farm & Ranch, Llc (private). It impounds the Oriama & Red Mountain Creeks near No Downstream Settlement.
The dam stands 16 feet tall and stretches 66 feet across, creates a reservoir covering 41 acres, has a maximum storage capacity of 480 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1931, the structure is well-established, with more than 75 years of service.
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 09/17/2012. That was over 13 years ago.
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Location
| State | Oregon |
| County | Harney |
| Nearest City | No Downstream Settlement |
| River/Stream | Oriama & Red Mountain Creeks |
| Coordinates | 42.10214, -118.38717 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 66 ft |
| Year Completed | 1931 (95 years old) |
Storage & Hydraulics
| NID Storage | 480 acre-ft |
| Max Storage | 480 acre-ft |
| Normal Storage | 480 acre-ft |
| Surface Area | 41 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 167 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | PUEBLO MOUNTAIN FARM & RANCH, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 09/17/2012 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OR00071 |
| Federal ID | OR00071 |
| More Info | State Dam Safety Program |