Whitewater Rivers in and near the Siskiyou Mountains, Oregon 1   Klamath River Class II - 48 miles long (Iron Gate Dam to Sarah Totten Camp Ground) Siskiyou County 2   Rogue River Class II-IV - 2 miles long (Above Nugget Falls to Gold Hill Boat Ramp) Jackson County 3   Shasta River Class III - 6.8 miles long (Highway 263 bridge to Klamath River) Siskiyou County