flows SW, through Caswell Lake, to Susitna River, 14 mi. N of Willow and 50 mi. NNW of Anchorage, Cook Inlet Low. 12 miles long.
Named for a local prospector and reported on 1917 Alaska RR. manuscript map.
Caswell Lake, Caswell Number 3 Lake, Emil Lake, Gene Lake, Jack Lake, Jean Lake, John Lake, Kashwitna Lake, Montana Lake, North Friend Lake, Oriana Lake, Rockys Lakes, Ruth Lake, South Friend Lake, Stevens Lake, Sunset Lake, Trapper Lake, Willow Lake, Woman Lake,
196 Mile Creek, 197 1/2 Mile Creek, Buddy Creek, Caswell Creek, Deception Creek, Goose Creek, Iron Creek, Little Montana Creek, Little Willow Creek, Montana Creek, Rogers Creek, Sheep Creek, Willow Creek,