flows S 6 mi. to Meshik River, 11 mi. S of Vent Mtn.; Aleutian Range
so named in 1923 by R. H. Sargent, U.S. Geological Survey (USGS), because of "a beautiful rainbow seen here after a long storm."
Aniakchak Peak, Black Nose, Half Cone, Pinnacle Mountain, Vent Mountain,
Mountain Passes:Black Pass, The Gates, Portage Pass,
Ridges:Streams:Bear Creek, Black Creek, Blue Violet Creek, Cub Creek, Hidden Creek, Rainbow Creek, Rudy Creek, Shoe Creek, Sleepy Creek, Waterfall Creek, Wind Creek, Wolf Creek,