Cantwell Main Reservoir   Be the first to submit input for Cantwell Main Reservoir. If you have info on Cantwell Main Reservoir, Cameron County, Texas please submit it here to improve this web site.          These outdoors activities are available near Cantwell Main Reservoir.   Marinas On or Near Cantwell Main Reservoir: Alarcon de Colorado Marina, Harlingen, 9 miles away   Camp Grounds Near Cantwell Main Reservoir: Twin Palms RV Mobile Park, Rio Hondo, 2 miles away River Ranch Resort RV Park, Rio Hondo, 3 miles away Lazy-r Mobile Home Park, Harlingen, 7 miles away Diving Dolphins RV Park, Rio Hondo, 7 miles away   Hotels Near Cantwell Main Reservoir: Americas Best Value Inn and Suites, San Benito, 8 miles away Hampton Inn Suites Harlingen, Harlingen, 9 miles away Casa Rama Bed and Breakfast, Harlingen, 9 miles away Super 8 San Benito/Harlingen Area, San Benito, 9 miles away Americas Best Value Inn Harlingen, Harlingen, 9 miles away   Golf Courses Near Cantwell Main Reservoir: Treasure Hills Golf, Harlingen, 7 miles away