Upper John G Reservoir   Be the first to submit input for Upper John G Reservoir. If you have info on Upper John G Reservoir, Owyhee County, Idaho please submit it here to improve this web site.          These outdoors activities are available near Upper John G Reservoir.   Ski Areas Near Upper John G Reservoir: Bogus Basin, Idaho, 99 miles away       1800 foot drop, 7 lifts, 52 runs   Whitewater Near Upper John G Reservoir: Owyhee River, OwyheeCounty, 7 miles away       Class III - 36 miles long (Crutcher's Crossing to Three Forks) Owyhee River - South Fork, OwyheeCounty, 16 miles away       Class II-III - 36 miles long (El Paso pipeline)