Its headwaters lie in the Umatilla National Forest in the Blue Mountains of eastern Oregon, and its flows north near its source then west for most of its course to meet the South Fork Umatilla River near Graves Butte.
Its headwaters lie in the Umatilla National Forest in the Blue Mountains of northeastern Oregon. It flows generally north near its source then west to meet the South Fork Umatilla River near Graves Butte.