Upper Cottonwood Reservoir   Be the first to submit input for Upper Cottonwood Reservoir. If you have info on Upper Cottonwood Reservoir, Fremont County, Wyoming please submit it here to improve this web site.          These outdoors activities are available near Upper Cottonwood Reservoir.   Public Lands Near Upper Cottonwood Reservoir: Boysen State Park, Wyoming, 14 miles away Hot Springs State Park, Wyoming, 26 miles away   Marinas On or Near Upper Cottonwood Reservoir: Boysen Marina & Campground, Shoshoni, 16 miles away   Hotels Near Upper Cottonwood Reservoir: Hampton Inn and Suites Riverton, WY, Riverton, 13 miles away Comfort Inn & Suites, Riverton, 13 miles away Super 8 Riverton, Riverton, 13 miles away Holiday Inn RIVERTON-CONVENTION CENTER, Riverton, 13 miles away Rodeway Inn & Suites Riverton, Riverton, 14 miles away   Whitewater Near Upper Cottonwood Reservoir: Wind River, Fremont Hot SpringsCounty, 16 miles away       Class I-III - 12 miles long (Boysen Dam to canyon mouth)