| Warm Springs Reservoir | |
| Location: | Harney / Malheur counties, Oregon, United States |
| Coords: | 43.5856°N -118.2089°W[1] |
| Type: | Reservoir |
| Inflow: | Malheur River |
| Outflow: | Malheur River |
| Catchment: | 1059.5sigfig=5NaNsigfig=5 |
| Basin Countries: | United States |
| Date-Built: | 1919 |
| Length: | 8.5sigfig=2NaNsigfig=2[2] |
| Width: | 1.3sigfig=2NaNsigfig=2 |
| Area: | 4194sigfig=4NaNsigfig=4 |
| Depth: | 68sigfig=2NaNsigfig=2[3] |
| Max-Depth: | 140sigfig=3NaNsigfig=3 |
| Volume: | 169714sigfig=6NaNsigfig=6 |
| Residence Time: | 2.2 years |
| Shore: | 34.5sigfig=3NaNsigfig=3 |
| Elevation: | 34060NaN0 |
| Pushpin Map: | Oregon#USA |
| Pushpin Map Alt: | Location of Warm Springs Reservoir in Oregon, USA. |
Warm Springs Reservoir is a reservoir on the boundary between Harney and Malheur counties in the U.S. state of Oregon. It is located 13miles southwest of Juntura at an elevation of 3406feet. The lake's primary inflow and outflow are both the Malheur River.[2] [4]
The 106-tallNaN-tall and 469-longNaN-long thin-arch concrete Warm Springs Dam was built from 1918 to 1919 by the Warm Springs Irrigation District, and was later modified in 1930 and 1939 with the help of the United States Bureau of Reclamation.[2] [5] [6] It was constructed from 19500yd3 of material on top of a series of olivine basalt lava flows.[4] [6] The resultant 8.5by reservoir has a maximum area of 4194acres, a maximum volume of 169714acre.ft,[2] and a maximum depth of 140feet.[3] It has a shore length of about 34.5miles and a residence time of about 2.2 years.[3]
Warm Springs Reservoir's watershed covers approximately 1059.5mi2 of eastern Oregon. It receives an average precipitation of 17.5inches. As of the 2000 Census, there were 157 people living within the watershed's boundaries.[1]
The predominant wildlife in the region is mule deer and various waterfowl. Bass, bluegill, and rainbow trout are the main fish found in the reservoir.[7] The reservoir is classified as eutrophic, with a transparency of about 3.3feet.[3]