Sewell Reservoir   Be the first to submit input for Sewell Reservoir. If you have info on Sewell Reservoir, Owyhee County, Idaho please submit it here to improve this web site.          These outdoors activities are available near Sewell Reservoir.   Public Lands Near Sewell Reservoir: Humboldt National Forest, Nevada, 34 miles away   Ski Areas Near Sewell Reservoir: Bogus Basin, Idaho, 73 miles away       1800 foot drop, 7 lifts, 52 runs   Whitewater Near Sewell Reservoir: Owyhee River - East Fork, OwyheeCounty, 18 miles away       Class II - 50 miles long (Duck Valley to Crutcher's Crossing) Marys Creek, OwyheeCounty, 19 miles away       Class III-IV - 6 miles long (to Sheep Creek)