Greely Dam
Greely Dam is a gravity dam located in Malheur County, Oregon, built in 2004. It carries a Low hazard potential classification.
About Greely Dam
The primary purpose of Greely Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Doi Blm (federal). It impounds the Trib Rock Creek.
The dam stands 11 feet tall and stretches 464 feet across, and has a maximum storage capacity of 297 acre-feet. Completed in 2004, the structure is relatively new.
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 09/18/2018.
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Location
| State | Oregon |
| County | Malheur |
| River/Stream | Trib Rock Creek |
| Coordinates | 42.87103, -117.31340 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 11 ft |
| Dam Length | 464 ft |
| Year Completed | 2004 (22 years old) |
Storage & Hydraulics
| NID Storage | 297 acre-ft |
| Max Storage | 297 acre-ft |
| Max Discharge | 5 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | DOI BLM |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 09/18/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OR00085 |
| Federal ID | OR00085 |
| More Info | State Dam Safety Program |