Bates Reservoir is an earth dam located in Grant County, Oregon, built in 1949. It carries a Low hazard potential classification.
Dam profile
NID height · 26 ft26 ft tall and 320 ft long, taller than 55% 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 Bates Reservoir
The primary purpose of Bates Reservoir is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Oregon State Parks (private). It impounds the John Day, Middle Fork near Bates.
The dam stands 26 feet tall and stretches 320 feet across, creates a reservoir covering 9 acres, has a maximum storage capacity of 100 acre-feet, and collects water from a drainage area of 18 square miles. Completed in 1949, 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 05/09/2013. That was over 13 years ago.
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Location
| State | Oregon |
| County | Grant |
| Nearest City | Bates |
| River/Stream | John Day, Middle Fork |
| Coordinates | 44.59020, -118.51350 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 26 ft |
| Dam Length | 320 ft |
| Year Completed | 1949 (77 years old) |
Storage & Hydraulics
| NID Storage | 100 acre-ft |
| Max Storage | 100 acre-ft |
| Normal Storage | 32 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 18 sq mi |
| Max Discharge | 144 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Oregon State Parks |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 05/09/2013 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OR00454 |
| Federal ID | OR00454 |
| More Info | State Dam Safety Program |