Elmer Reservoir 1, located in Union, Oregon, is a private-owned water resource primarily used for irrigation purposes.
Wind
Humidity
Completed in 1966, this earth dam stands at 16 feet high and has a storage capacity of 128 acre-feet. Situated along the Grande Ronde River, the reservoir covers a surface area of 15 acres and serves as a crucial water source for agricultural activities in the region.
With a low hazard potential and a condition assessment of "Not Rated," Elmer Reservoir 1 is considered to be in good structural condition. The dam features a slide (sluice gate) outlet gate and has a hydraulic height of 12 feet. Despite not being regularly inspected, the reservoir meets state regulatory standards for permitting, inspection, and enforcement, ensuring its safe operation and maintenance.
Although the dam has not been modified in recent years and lacks certain emergency preparedness measures, Elmer Reservoir 1 remains a vital water infrastructure serving the irrigation needs of the local community. With its strategic location and reliable water storage capacity, the reservoir plays a crucial role in supporting agricultural activities and ensuring water resource sustainability in Union, Oregon.
Year Completed |
1966 |
Dam Length |
150 |
Dam Height |
16 |
River Or Stream |
GRANDE RONDE RIVER |
Primary Dam Type |
Earth |
Surface Area |
15 |
Hydraulic Height |
12 |
Nid Storage |
128 |
Structural Height |
16 |
Outlet Gates |
Slide (sluice gate) |
Hazard Potential |
Low |
Nid Height |
16 |
Minam River Near Minam
|
298cfs |
Meacham Creek At Gibbon
|
315cfs |
Umatilla River Above Meacham Creek
|
196cfs |
Grande Ronde River At Troy
|
2460cfs |
Mill Creek Near Walla Walla
|
71cfs |
Umatilla R At W Reservation Bndy Nr Pendleton
|
434cfs |