Last Chance Reservoir   Be the first to submit input for Last Chance Reservoir. If you have info on Last Chance Reservoir, Owyhee County, Idaho please submit it here to improve this web site.          These outdoors activities are available near Last Chance Reservoir.   Whitewater Near Last Chance Reservoir: Owyhee River, OwyheeCounty, 10 miles away       Class III - 36 miles long (Crutcher's Crossing to Three Forks) Owyhee River - South Fork, OwyheeCounty, 15 miles away       Class II-III - 36 miles long (El Paso pipeline)