Big Flat Reservoir   Be the first to submit input for Big Flat Reservoir. If you have info on Big Flat Reservoir, Grand County, Utah please submit it here to improve this web site.          These outdoors activities are available near Big Flat Reservoir.   Public Lands Near Big Flat Reservoir: Dead Horse Point State Park, Utah, 5 miles away Green River State Park, Utah, 36 miles away Arches National Park, Moab - UT, 18 miles away Canyonlands National Park, Moab - UT, 18 miles away   Hotels Near Big Flat Reservoir: Aarchway Inn, Moab, 15 miles away Holiday Inn Express Hotel & Suites MOAB, Moab, 16 miles away Super 8 Moab, Moab, 16 miles away The Gonzo Inn, Moab, 16 miles away River Canyon LodgeInn And Suites, Moab, 17 miles away   Whitewater Near Big Flat Reservoir: Whitewater Outfitter - World Wide River Expeditions, GrandCounty, 16 miles away       Whitewater outfitter Whitewater Outfitter - Western River Expeditions, GrandCounty, 16 miles away       Whitewater outfitter Whitewater Outfitter - Western River Expeditions, GrandCounty, 17 miles away       Whitewater outfitter