Cook Reservoir   Be the first to submit input for Cook Reservoir. If you have info on Cook Reservoir, Rock County, Nebraska please submit it here to improve this web site.          These outdoors activities are available near Cook Reservoir.   Public Lands Near Cook Reservoir: Burke Lake Recreation Area, South Dakota, 21 miles away   Hotels Near Cook Reservoir: Rodeway Inn Ainsworth, Ainsworth, 39 miles away Super 8 Ainsworth, Ainsworth, 39 miles away Holiday Inn Express Hotel & Suites WINNER, Winner, 48 miles away Holiday Inn Express O'NEILL, Oneill, 49 miles away Super 8 O Neill NE, Oneill, 49 miles away