Pullman

The Palouse River, whose upper course flows though the town, is an exception among Washington rivers: because of the high erosion rate of the light Palouse loess soils it usually runs muddy, almost like a gruel during floods (most Washington Rivers run clear, even after major storms). The 198-foot-high Palouse Falls farther downstream, near Washtucna, dramatically drop as a thin sheet of water into a steep box canyon.