An Oregon Department of Fish and Wildlife spawning gravel report of the Sourth Fork Sprague River, reaches 5, 6, 8A, and 8B, from the tributary to Sprague River to Williamson River.
Nawa, R. and Huntington, C., "Ex. 280-US-473" (2004). In re Klamath River (Klamath Tribe). 205.