Alder Creek is a dam located in Harney County, Oregon, built in 1973. It carries a Low hazard potential classification.
Dam profile
NID height · 63 ft63 ft tall and 670 ft long, taller than 95% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Alder Creek
The primary purpose of Alder Creek is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is private-owned. It impounds the Alder Creek near Riverside.
The dam stands 63 feet tall and stretches 670 feet across, creates a reservoir covering 22 acres, has a maximum storage capacity of 800 acre-feet, and collects water from a drainage area of 11 square miles. Completed in 1973, 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 10/08/2014. That was over 12 years ago.
At 63 feet, this dam is taller than 95% of all dams in the United States.
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Location
| State | Oregon |
| County | Harney |
| Nearest City | Riverside |
| River/Stream | Alder Creek |
| Coordinates | 43.38309, -118.46635 |
Physical Characteristics
| NID Height | 63 ft |
| Dam Height | 55 ft |
| Dam Length | 670 ft |
| Year Completed | 1973 (53 years old) |
Storage & Hydraulics
| NID Storage | 800 acre-ft |
| Max Storage | 800 acre-ft |
| Normal Storage | 640 acre-ft |
| Surface Area | 22 acres |
| Drainage Area | 11 sq mi |
| Max Discharge | 575 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 10/08/2014 |
| Emergency Action Plan | No |
Identifiers
| NID ID | OR00531 |
| Federal ID | OR00531 |
| More Info | State Dam Safety Program |