Big Bend National Park, Texas National Forest Visitor Informaiton Center. Big Bend National Park, is one of the largest and least visited of America’s national parks. Over 801,000 acres. Camping, Campgrounds: Chisos Basin Campground, 63 campsites. Flush toilets, running water, grills, and picnic tables are available. No hookups . Cottonwood Campground, 31 campsites. Pit toilets, picnic tables, grills, and water are available. No Hook ups. No dump station. No generators allowed . Elevation 1,900'. Rio Grande Village Campground: 100 site campground has flush toilets, running water, picnic tables, grills, and some overhead shelters. Dump Station nearby; No hook-ups . Elevation 1,850'. Rio Grande Village RV Park: 25 sites. This is the only campground with hook - ups in the park. Boating, Fishing, Kayaking, Whitewater Rafting: The Rio Grande, or El Rio Bravo del Norte, borders Big Bend National Park for 118 miles. Big Bend National Park to City of Marathon