DeGray Lake, Reservoir in Clark County, Arkansas, US

DeGray Lake is a reservoir on the Caddo River in northern Clark County, Arkansas, about 8 miles from Arkadelphia. Its 240-foot earth-fill DeGray Dam, completed in 1972, has a pale tan downstream slope and a narrow crest; a concrete intake and a white flat-roofed building stand at its left base. The lake covers 13,400 acres with 207 miles of shoreline.

The dam was built between 1962 and 1972 by the U.S. Army Corps of Engineers following authorization from the River and Harbor Act of 1950. This project fundamentally changed the landscape and how the Caddo River could be used.

The name derives from DeGraff, a French fur trader who settled in the region in the 18th century. Before that, the area was Caddo land: the Caddo lived here from around AD 700, and archaeologists from the University of Arkansas excavated 14 sites in the reservoir area, including the Powell site temple mound in Clark County.

Visitors can find nine campgrounds, multiple boat ramps, and swimming areas all managed by the U.S. Army Corps of Engineers. Hiking trails run through the area and allow for exploring on foot.

DeGray Lake was the first impoundment in the history of the U.S. Army Corps of Engineers built to be "pump back capable". A re-regulation dam below the main dam forms a 400-acre lower lake that serves as a storage basin; during drought, the 28,000 KW generator can be reversed to pull water back up into the main lake for hydropower generation.