Lost Reservoir   Be the first to submit input for Lost Reservoir. If you have info on Lost Reservoir, Natrona County, Wyoming please submit it here to improve this web site.          These outdoors activities are available near Lost Reservoir.   Lakes Near Lost Reservoir: Firnekas Reservoir, Natrona County, 11 miles away   Hotels Near Lost Reservoir: Super 8 Casper/West, Casper, 41 miles away CASPER HILTON GARDEN INN, Casper, 41 miles away Hampton Inn Suites Casper, Casper, 42 miles away Best Western Ramkota Hotel, Casper, 42 miles away Quality Inn & Suites, Casper, 42 miles away