The Lake Somerville Trailway System, located around the west end of the reservoir, connects Birch Creek State Park with Nails Creek State Park via 13 miles of trails for hiking, mountain biking, horseback riding, backpacking, birding, and nature study. Flag Pond, located approximately 4 miles from Nails Creek State Park and 9 miles from Birch Creek State Park along the Somerville Trailway, provides waterfowl hunting and non-consumptive wildlife viewing opportunities in conjunction with a system of interpretive trails, nature study, outdoor classrooms, and wildlife photography. The Flag Pond Nature Theatre provides an excellent wildlife-viewing platform. Campgrounds for equestrian and backpackers are located along the trailway. Well water for horses only is available at Newman Bottom and Wolf Pond.
Chemical toilets are in the area.
There are also trails accessible to the disabled in both parks. The Somerville WMA, located n Lee and Burleson counties, is composed of two separate tracts including 2,030 acres in the Yegua Creek Compartment and 1,150 acres in the Nails Creek Compartment. The Texas Parks and Wildlife Department manages this WMA under a license agreement and in cooperation with the U.S. Army Corps of Engineers. Objectives are to restore and maintain healthy populations of native fauna and flora in natural habitats and to provide for compatible public use. Where game populations exceed the carrying capacity of the habitat, the preferred method of reduction is public hunting.