Otter Reservoir   Be the first to submit input for Otter Reservoir. If you have info on Otter Reservoir, Owyhee County, Idaho please submit it here to improve this web site.          These outdoors activities are available near Otter Reservoir.   Public Lands Near Otter Reservoir: Humboldt National Forest, Nevada, 23 miles away   Ski Areas Near Otter Reservoir: Bogus Basin, Idaho, 83 miles away       1800 foot drop, 7 lifts, 52 runs   Whitewater Near Otter Reservoir: Marys Creek, OwyheeCounty, 15 miles away       Class III-IV - 6 miles long (to Sheep Creek) Sheep Creek, OwyheeCounty, 19 miles away       Class II-V+ - 19.3 miles long (Marys Creek to Bruneau River)