Yoncalla Reservoir
Yoncalla Reservoir is an earth dam located in Douglas County, Oregon, built in 1983. It carries a Low hazard potential classification.
About Yoncalla Reservoir
The primary purpose of Yoncalla Reservoir is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by City Of Yoncalla (local government). It impounds the Adams Creek near Yoncalla.
The dam stands 16 feet tall and stretches 2,000 feet across, creates a reservoir covering 8 acres, and has a maximum storage capacity of 112 acre-feet. Completed in 1983, the structure is 43 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 01/22/2019.
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Location
| State | Oregon |
| County | Douglas |
| Nearest City | Yoncalla |
| River/Stream | Adams Creek |
| Coordinates | 43.57628, -123.27536 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 2,000 ft |
| Year Completed | 1983 (43 years old) |
Storage & Hydraulics
| NID Storage | 112 acre-ft |
| Max Storage | 112 acre-ft |
| Normal Storage | 112 acre-ft |
| Surface Area | 8 acres |
| Max Discharge | 27 cfs |
Ownership & Safety
| Purpose | Water Supply |
| Owner | CITY OF YONCALLA |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 01/22/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OR00682 |
| Federal ID | OR00682 |
| More Info | State Dam Safety Program |