Donnells Dam (National ID # CA00264) is a concrete arch dam located on the Middle Fork of the Stanislaus River in Tuolumne County, California.
The water impounded by the 291-foot (89 m) high dam forms Donnell Lake in Stanislaus National Forest.
The dam and reservoir are co-owned by the Oakdale Irrigation District and South San Joaquin Irrigation District, and the dam is one of three in the Tri-Dam Project.
The other two dams in the project are Beardsley Dam and Tulloch Dam.

The dam has a length of 750 feet (230 m) at its crest and a storage capacity of 56,893 acre feet (70,176,000 m³).
 Donnells Reservoir, along with the two other dams of that make up the Tri-Dam Project, currently provide water for the irrigation of about 117,500 acres (47,600 ha) of farmland in Stanislaus and San Joaquin counties.
The reservoir also generates hydroelectric power and supplies water to urban areas.
Donnells Dam (National ID # CA00264) is a concrete arch dam located on the Middle Fork of the Stanislaus River in Tuolumne County, California. The water impounded by the 291-foot (89 m) high dam forms Donnell Lake in Stanislaus National Forest. The dam and reservoir are co-owned by the Oakdale Irrigation District and South San Joaquin Irrigation District, and the dam is one of three in the Tri-Dam Project. The other two dams in the project are Beardsley Dam and Tulloch Dam.
The dam has a length of 750 feet (230 m) at its crest and a storage capacity of 56,893 acre feet (70,176,000 m³).  Donnells Reservoir, along with the two other dams of that make up the Tri-Dam Project, currently provide water for the irrigation of about 117,500 acres (47,600 ha) of farmland in Stanislaus and San Joaquin counties. The reservoir also generates hydroelectric power and supplies water to urban areas.
Donnells Dam