Proctor, Charles M., John C. Garcia, David V. Galvin, Gary B. Lewis, Lincoln C. Loehr, Alison M. Massa, and Ryckman Edgerly Tomlinson & Associates Inc. An Ecological Characterization of the Pacific Northwest Coastal Region. Volume 4:  Characterization Atlas - Watershed Unit Descriptions In FWS/OBS. Vol. no.79/14. United States Fish and Wildlife Service.  Biological Services Program, 1980.