DeGray Lake is a reservoir on the Caddo River constructed by the United States Army Corps of Engineers in Arkansas, 8 miles (13 km) from Arkadelphia.

The project plan for DeGray Lake included the construction of the DeGray Dam with a height of 240 feet above the Caddo River, a dike that splits the Caddo River and Bayou de Roche, an outlet works, an uncontrolled spillway, and a powerhouse.

Caddo is believed to be a shortened version of the Indian word "kadohadacho", which was used to identify the large family of tribes living in southwest Arkansas, northwest Louisiana, and northeast Texas.

The Caddo were farmers growing corn, squash, pumpkins and beans and they supplemented their diet by gathering food in the woods (berries, nuts, etc.,) and by hunting and fishing.

DeGray dam impounds the waters of the Caddo River to form a flood control lake that covers 13,400 acres (5,400 ha), and a shoreline of 207 mi (333 km).

Brick and concrete structures from former homesteads still stand on the bottom of the lake, whereas the remains of others can be found in selected areas near the shoreline.

Although recreation plays a major role in every day activity, hydropower makes this lake one of the most efficient and energy producing projects in the South.

DeGray Lake holds the distinction as the first "pump back capable" impoundment in the history of the Corps of Engineers.

A re-regulation dam forms a 400-acre impoundment directly below the main lake that serves as a storage basin for pump back capable features.

A variety of songbirds with other birds, such as hawks, owl, herons, and vultures, are either permanent residents or migrate through the DeGray area.

Large tracts of land, not suited for recreational development, will be set aside to preserve wildlife habitats, both for hunting purposes and the encouragement of non-game species.

DeGray Lake, with 13,420 surfaces acres at full power pool has the potential for providing a substantial annual sport fishery.

To provide sport fishing variety and to supplement the predator population, exotic species (walleye, northern pike and muskellunge) were also stocked.

As a result, smallmouth and rock bass, warmouth, red-ear sunfish, and channel catfish are caught on the lower Caddo River.

Nestled in a woodland canopy, these areas offer a quiet place to relax and enjoy Mother Nature.

Some game DeGray offers to hunt include quail, duck, geese, rabbit, squirrel, bear, turkey, and deer being the most popular.

The architects of this scheme did not foresee several years of drought, which combined with the Pak fly, wiped out DeGray's hydrilla.

In an attempt to rejuvenate the lake, AGFC partnered in 2019 with the University of Arkansas at Pine Bluff Aquaculture and Fisheries to restore the native vegetation.

The money spent by visitors to Corps lakes on trip expenses adds to the local and national economy by supporting jobs and generating income.

Recreational programs and activities at DeGray also help strengthen family ties and friendships, provide opportunities for children to develop personal skills, giving the public the knowledge to become stewards for nature, and increase water safety.