Between the two parks, at the western edge of Lake Somerville, is Flag Pond and numerous other duck ponds, marshes and bogs. The Somerville Trailway passes through dense stands of yaupon, post oak, hickory, blackjack oak, and water oak forests, past scenic overlooks and water crossings. The trail has one of the best spring wildflower displays in the Texas State Park System. Many species of birds and wildlife may be observed and photographed including white-tailed deer, fox, coyote, raccoon, rabbit, waterfowl, and quail. A bird checklist is available at the Birch and Nails Creek headquarters.
Visitors can enjoy fishing for white bass , crappie , largemouth bass , and catfish .
Go to the USGS Burleson County Butterfly Checklist and the USGS Lee County Butterfly Checklist for information on butterflies in this area. To reach Nails Creek from Giddings, take US Highway 290 east to FM 180. For directions to Somerville WMA, inquire at either Birch Creek or Nails Creek Headquarters for directions, public hunting information, and nature trail maps. First weekend in March through the Fourth of July. You may also want to refer to nearby U.S.Army Corps of Engineers and parks.