Lake Somerville was created by the U.S. Army Corps of Engineers, starting in 1962 and completed in 1967. This 11,630-acre lake, located on Yegua Creek, serves flood control, water supply, and recreational purposes. Managed by TPWD since 1969, the park features Flag Pond, a 350-acre impoundment, and three creeks: Nails Creek, Yegua Creek, and Birch Creek, all flowing into the lake. The area is rich in wildlife, including deer, bobcats, and otters. Biking around the lake offers scenic views and a great spot for a water break.