This view taken along WA Highway 504 shows the sediment-clogged
valley of the North Fork of the Toutle River. The image shows the active
stream channels in low flow. The active flood plain has a brownish-gray
appearance whereas the relatively undisturbed surface of the 1980 flow has
a thin, green vegetative cover and has numerous pools that have not yet
developed a surface drainage network. Mount St. Helens is in the upper left-hand
corner. |