Interview Granted to the British Television Company Channel Four, May 5, 1989Mengistu Hailemariam (Mengistu Haile Mariam)1989PDF5.6 MB
Channel Geometry, Flood Elevations, and Flood Maps, Lower Toutle and Cowlitz Rivers, Washington, June 1980 to May 1981R. E. Lombard1986
Assessment of Changes in Channel Morphology and Bed Elevation in Mad River, California, 1971-2000Kevin. Knuuti2003
Channel Conditions in the Lower Toutle and Cowlitz Rivers Resulting from the Mudflows of May 18, 1980R. E Lombard, Geological Survey (U.S.)1981EN
