Brevard County is an area of some 1,300 square miles located on the east coast of central Florida. The Titusville quadrangle, in northern Brevard, includes part of the Atlanta Coastal Ridge, an area of relatively high sand ridges that are generally above 30 feet in altitude (sheet 1). Approximately the western one third of the quadrangle is in relatively low marshlands of the St. Johns River valley. The eastern part of the quadrangle contains estuarine waters of the Indian River and a small portion of the John F. Kennedy Space Center on Merritt Island.