Lake Eucha, Reservoir in Delaware County, Oklahoma, USA

Lake Eucha is a reservoir in Delaware County, Oklahoma, created in 1952 by the Eucha dam on Spavinaw Creek. It is 8.5 miles (13.7 km) long and 0.7 miles (1.1 km) wide, with a surface area of 2,800 acres (11 km2), a shoreline of about 50 miles (80 km), and a storage capacity of 80,000 acre-feet (99,000,000 m3). The dam is 2,100 feet (0.64 km) long and stands at an elevation of 778 feet.

Lake Eucha was created in 1952 when the Eucha dam on Spavinaw Creek was completed. The City of Tulsa owns the lake, which serves as additional storage and a buffer for Lake Spavinaw, Tulsa's principal municipal water source. Before construction, the Cherokee community of Eucha was moved to higher ground because the lake would submerge the original townsite. W. R. Holway is credited with the design and construction.

The water is clear enough for swimming and fishing and is accessible through multiple boat ramps on the northwest and southwest sides of the Highway 10 bridge as well as near Eucha Point. Bring water, snacks, and sun protection, especially during warmer months, and use local bait shops in Disney and nearby towns for fishing supplies.

The Cherokee community of Eucha was moved to higher ground before the dam was built, since the rising water was to cover the original townsite. W. R. Holway is credited with designing and building both this project and Lake Spavinaw, Tulsa's main water source.