High Quality Content by WIKIPEDIA articles! Warm Springs Reservoir is a reservoir on the line between Harney and Malheur counties in the U.S. state of Oregon. It is located 13 miles (21 km) southwest of Juntura at an elevation of 3,406 feet (1,038 m). The lake`s inflow and outflow are both the Malheur River. The 106-foot (32 m) tall and 469-foot (143 m) long Warm Springs Dam was built from 1918 to 1919 by the Warm Springs Irrigation District and was later modified in 1930 and 1939. It was constructed from 19,500 cubic yards (14,900 m3) of material. The primary geology of the area is a series of olivine basalt flows. The predominant wildlife are waterfowl and mule deer. Bass, bluegill, and rainbow trout are the main fish found in the reservoir.