Rock Island Lake   Be the first to submit input for Rock Island Lake. If you have info on Rock Island Lake, Sawtooth Range, Elmore County, Idaho please submit it here to improve this web site.          These outdoors activities are available near Rock Island Lake.   Lakes Near Rock Island Lake: Elk Lake, Boise County, 5 miles away Imogene Lake, Custer County, 13 miles away Hell Roaring Lake, Custer County, 14 miles away   Public Lands Near Rock Island Lake: Sawtooth National Forest, Idaho, 24 miles away Challis National Forest, Idaho, 26 miles away Hagerman Fossil Beds National Monument, Hagerman - ID, 59 miles away   Camp Grounds Near Rock Island Lake: Powerplant Campground, Elmore County, 7 miles away Queens River Campground, Elmore County, 9 miles away Grandjean Campground, Custer County, 10 miles away Graham Bridge Campground, Boise County, 10 miles away   Ski Areas Near Rock Island Lake: Soldier Mountain, Idaho, 31 miles away       1425 foot drop, 3 lifts, 36 runs Sun Valley, Idaho, 52 miles away       3400 foot drop, 19 lifts, 75 runs Bogus Basin, Idaho, 68 miles away       1800 foot drop, 7 lifts, 52 runs   Whitewater Near Rock Island Lake: Payette River - South Fork, BoiseCounty, 11 miles away       Class III-IV - 23 miles long (Grandjean to Lowman) Salmon River, CusterCounty, 19 miles away       Class III-IV - 13 miles long (Stanley to Old Sunbeam Dam)