 The structures in all three districts were built between 1933 and 1937 and are designated as part of either the Beach and Day Use, Family Cabin, or Maintenance Historic Districts.Eighteen structures in the Beach and Day Use Historic District are protected as contributing properties, including seven "standard" pavilions, a larger picnic shelter, and three water pump shelters.These last were built of native stone and covered with pebbles, and have since been converted to small picnic pavilions.