Blum Basin Falls is a remote, little-visited waterfall in North Cascades National Park in Whatcom County, Washington, on the headwaters of Blum Creek, a tributary of the Baker River. Fed by meltwater from two small retreating glaciers and several snowfields on the south side of Mount Blum, it drops about 1,680 feet in two stages: long slides above the tree line and near-vertical plunges into the forested valley below. First reported and photographed in 1920 by Asahel Curtis, it remained unnamed and obscure for years. Its name traces through Blum Creek and Mount Blum to John Blum, a United States Forest Service fire patrol pilot killed in an early 20th-century plane crash.