Lewis Range, Montana Whitwater Rivers Bear Creek Class IV-V - 2 miles long (Trailside) -blank- County Dearborn River Class II-III - 16 miles long (Falls Creek to Highway 200 Bridge) Lewis & Clark County Falls Creek Class III-V(V+) - 2 miles long (to Dearborn) Lewis & Clark County Flathead River - Middle Fork Class III - 9 miles long (Moccasin Creek to West Glacier) -blank- County Flathead River - Middle Fork Class II - 6 miles long (West Glacier to Blankenship Bridge) -blank- County Flathead River - Middle Fork Class II+ - 31 miles long (Bear Creek to Moccasin Creek) -blank- County Flathead River - Middle Fork Class I-IV - 26 miles long (Schafer Meadows to Bear Creek) Flathead County Flathead River - South Fork Class II+ - 31 miles long (Big Prairie to Mid Creek) Flathead County