Union Reservoir   Be the first to submit input for Union Reservoir. If you have info on Union Reservoir, Warner Mountains, Lassen County, California please submit it here to improve this web site.          These outdoors activities are available near Union Reservoir.   Hotels Near Union Reservoir: Best Western Trailside Inn, Alturas, 40 miles away Super 8 Alturas, Alturas, 41 miles away Super 8 Susanville, Susanville, 42 miles away BEST WESTERN PLUS Trailside Inn, Susanville, 42 miles away Budget Host Frontier Inn, Susanville, 43 miles away   Hiking Trails Near Union Reservoir: East Creek Trail, Modoc County, 17 miles away       7.5 hiking miles, 2136 feet elevation difference Bearcamp Flat Trail, Modoc County, 17 miles away       1.1 hiking miles, 527 feet elevation difference Emerson Creek Trail, Modoc County, 18 miles away        7 hiking miles, 2630 feet elevation difference   Ski Areas Near Union Reservoir: Warner Canyon, Oregon, 70 miles away       730 foot drop, 1 lifts, 14 runs Tahoe Donner, California, 82 miles away       600 foot drop, 4 lifts, 14 runs Boreal, California, 83 miles away       500 foot drop, 10 lifts, 41 runs