Big Boy Reservoir   Be the first to submit input for Big Boy Reservoir. If you have info on Big Boy Reservoir, Johnson County, Wyoming please submit it here to improve this web site.          These outdoors activities are available near Big Boy Reservoir.   Hotels Near Big Boy Reservoir: Holiday Inn Express Hotel & Suites BUFFALO, Buffalo, 17 miles away Hampton Inn and Suites Buffalo, WY, Buffalo, 17 miles away Comfort Inn Buffalo, Buffalo, 18 miles away Super 8 Buffalo, Buffalo, 18 miles away Wyo Motel, Buffalo, 18 miles away   Whitewater Near Big Boy Reservoir: Clear Creek, JohnsonCounty, 20 miles away       Class IV-V - 4.2 miles long (confluence of Middlr Fork to Moiser Gulch Picnic area)