Jimmy Creek Reservoir is an earth dam located in Union County, Oregon, built in 1981. It carries a Significant hazard potential classification.
Dam profile
NID height · 42 ft42 ft tall and 265 ft long, taller than 88% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Jimmy Creek Reservoir
The primary purpose of Jimmy Creek Reservoir is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Seven Diamond Ranch (private). It impounds the Jimmy Creek near North Powder.
The dam stands 42 feet tall and stretches 265 feet across, creates a reservoir covering 52 acres, has a maximum storage capacity of 675 acre-feet, and collects water from a drainage area of 40 square miles. Completed in 1981, the structure is 45 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 06/06/2018.
At 42 feet, this dam is taller than 88% of dams nationwide.
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Location
| State | Oregon |
| County | Union |
| Nearest City | North Powder |
| River/Stream | Jimmy Creek |
| Coordinates | 45.07990, -117.89358 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 42 ft |
| Dam Height | 42 ft |
| Dam Length | 265 ft |
| Year Completed | 1981 (45 years old) |
Storage & Hydraulics
| NID Storage | 675 acre-ft |
| Max Storage | 675 acre-ft |
| Normal Storage | 675 acre-ft |
| Surface Area | 52 acres |
| Drainage Area | 40 sq mi |
| Max Discharge | 1,858 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Seven Diamond Ranch |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 06/06/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OR00677 |
| Federal ID | OR00677 |
| More Info | State Dam Safety Program |