The Achomawi (also Achumawi, Ajumawi and Ahjumawi) were one of several bands of the Pit River tribe of Native Americans who lived in northeastern California, USA. They lived in the Fall River valley, Tule Lake and Pit River area near Montgomery Creek in Shasta County to Goose Lake on the Oregon state line. They were closely related to the Atsugewi. The Achomawi spoke a Palaihnihan language. Territory Historically, Achomawi territory was in the Pit River drainage area (with the exception of Ha… (More on Achomawi)