Three Rivers South Texas RV Park is located halfway between San Antonio and Corpus Christi off I-37 in the heart of the Eagle Ford Shale. Quiet and secluded. Perfect for oil field workers but only for campers if you are looking for an overnight stop. New park in 2013, no frills at this point, and no pull thrus. Dusty entry road and parking is all gravel. Stayed one night but would not stay here again. We camped here in a Motorhome.