page_title: Owyhee Dam
section_title: Dimensions
hierarchical_section_title: Owyhee Dam / Dimensions
caption_attribution_description: English: Owyhee Dam crest. DETAIL OF DOWNSTREAM PARAPET WALL, SHOWING BLIND ARCADE AND CORBELLED LIGHT STANDARD BASES. VIEW TO SOUTH.
context_page_description: Owyhee Dam is a concrete arch-gravity dam on the Owyhee River in Eastern Oregon near Adrian, Oregon, United States. Completed in 1932 during the Great Depression, the dam generates electricity and provides irrigation water for several irrigation districts in Oregon and neighboring Idaho. At the time of completion, it was the tallest dam of its type in the world. The dam is part of the Owyhee Dam Historic District, which is listed on the National Register of Historic Places.
  The dam impounds the river to create the Owyhee Reservoir, with storage capacity of nearly 1,200,000 acre feet of water. The more than 400-foot tall concrete-arch gravity dam is owned by the United States Bureau of Reclamation and operated by the Owyhee Irrigation District. Haystack Rock Road is carried over the 833-foot long crest of the dam.
context_section_description: Owyhee is 833 feet (254 m) long at the crest, which is 30 feet (9.1 m) wide. The base of the dam is 265 feet (81 m) wide, with a height of 417 feet (127 m). The crest elevation sits at 2,675 feet (815 m) above sea level and has a hydraulic height of 325 feet (99 m). Total concrete used in this arch gravity style dam was 537,500 cubic yards (410,900 m³).
  The dam's spillway can allow 41,790 cubic feet (1,183 m³) per second of water flow, while its tunnel capacity is 1,100 cubic feet (31 m³) per second. The outlet works can allow up to 2,530 cubic feet (72 m³) per second. If full, the reservoir would hold 1,183,300 acre feet (1.4596×10⁹ m³) of water, and is 53 miles (85 km) long. The total drainage area of the dam and reservoir is 10,900 square miles (28,000 km²) in Eastern Oregon and western Idaho.
  Owyhee Dam was the tallest dam in the world until the Lac du Chambon dam was built in France in 1934 at 136.7 meters (448 feet).
caption: Up close details of the crest
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