Four Corners Reservoir   Be the first to submit input for Four Corners Reservoir. If you have info on Four Corners Reservoir, Owyhee County, Idaho please submit it here to improve this web site.          These outdoors activities are available near Four Corners Reservoir.   Ski Areas Near Four Corners Reservoir: Bogus Basin, Idaho, 92 miles away       1800 foot drop, 7 lifts, 52 runs   Whitewater Near Four Corners Reservoir: Owyhee River - South Fork, OwyheeCounty, 9 miles away       Class II-III - 36 miles long (El Paso pipeline) Owyhee River, OwyheeCounty, 19 miles away       Class III - 36 miles long (Crutcher's Crossing to Three Forks)