Warm Springs Dam is on the Middle Fork of the Malheur River about 13 miles southwest of Juntura, Oregon. The dam, constructed by the Warm Springs Irrigation District, is a 106-foot-high thin arch structure, and contains 19,500 cubic yards of concrete. The total capacity of the reservoir is 192,400 acre-feet (active 191,100 acre-feet). One-half of the storage in the reservoir was purchased for use on the Vale Project. Geology Foundation: Series of olivine basalt flows |