Big Donaldson Reservoir   Be the first to submit input for Big Donaldson Reservoir. If you have info on Big Donaldson Reservoir, Johnson County, Wyoming please submit it here to improve this web site.          These outdoors activities are available near Big Donaldson Reservoir.   Public Lands Near Big Donaldson Reservoir: Tongue River Reservoir State Park, Montana, 38 miles away   Hotels Near Big Donaldson Reservoir: Holiday Inn Express Hotel & Suites BUFFALO, Buffalo, 19 miles away Hampton Inn and Suites Buffalo, WY, Buffalo, 19 miles away Comfort Inn Buffalo, Buffalo, 20 miles away Super 8 Buffalo, Buffalo, 20 miles away Wyo Motel, Buffalo, 20 miles away