Wright Patman Lake is a reservoir in northeast Texas in the United States. The lake is a U.S. Army Corps of Engineers reservoir formed on the Sulphur River in Bowie and Cass counties by Wright Patman Dam. Wright Patman Lake hosts a wide variety of recreational activities to allow visitors to get out and enjoy the beautiful Piney Woods. Activities include camping, swimming, boating, fishing, hunting, hiking, picnicking and wildlife viewing.