|Location||Malheur County, Oregon|
|Primary inflows||Owyhee River|
|Primary outflows||Owyhee River|
|Basin countries||United States|
|Max. length||52 mi (84 km)|
|Surface area||13,900 acres (56 km2)|
|Surface elevation||2,657 ft (810 m)|
Owyhee Reservoir or Owyhee Lake is a reservoir on the Owyhee River in Malheur County, Oregon, United States. Located in far Eastern Oregon near the Idaho border, the reservoir is Oregon's longest at 52 miles (84 km). The 13,900-acre (56 km2) lake is home to several species of fish, including crappie, rainbow trout, largemouth bass, smallmouth bass, yellow perch, and brown bullhead. An artificial lake, it was created in 1932 with the completion of the Owyhee Dam. Seasonal Lake Owyhee State Park is located on the northeast shore and includes a boat ramp.
- "Lake Owyhee". Geographic Names Information System, U.S. Geological Survey. Retrieved 2009-05-04.
- Oregon Blue Book: Oregon Almanac: Native Americans to Shoes, Oldest. Oregon Secretary of State. Retrieved on March 28, 2008.
- "Owyhee Reservoir". Wildernet.com. Retrieved 2008-07-23.
- "Owyhee Project". U.S. Bureau of Reclamation. Archived from the original on 2008-06-02. Retrieved 2008-07-23.
- "Lake Owyhee State Park". State Parks. Oregon Parks and Recreation Department. Retrieved 2008-07-23.
- "Owyhee Reservoir". The Columbia Gazetteer of North America (Columbia University Press). 2000. Retrieved 2008-07-23.
|Wikimedia Commons has media related to Owyhee Reservoir.|
- Owyhee Dam: U.S. Bureau of Reclamation
- Oregon Department of Fish and Wildlife
- US Bureau of Reclamation reservoir levels and flows