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Index card: Oblique aerial view of Swift Reservoir. Notice the mud and rocks deposited in the reservoir, and that the water at this point in time is still relatively clear. On the left bank (background) of the reservoir one can see several vacation-type homes which barely escaped the mudflows entering the reservoir. Skamania County, Washington. May 19, 1980. (Same as MSH-PP 1249 no. 37ct (msh_1249_00037_ct)). Published as Figure 33 in U.S. Geological Survey. Professional Paper 1249. 1982.
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Index card: Closer view of rock in Muddy River noted in slide no. 12ct (cvoa0012_ct). The diameter of the rock is approximately 30 feet. This rock was carried downstream during the May 18, 1980 mudflow, and deposited on cut logs located in the riverbed. Geologist for scale. Skamania County, Washington. 1980.
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Index card: A hot spot in the pyroclastic flows; geologist J.R. Williams examines a fumarole area within the cooler avalanche deposit at the northern base of Mount St. Helens. Sulphur stains on the pumice; note the relatively small particle size of the material. Rocks are very dense and hot; heat was derived from hot rock material buried within the deposit. Skamania or Cowlitz County, Washington. June 5, 1980. (Same as MSH-PP 1249 40ct). Published as Figure 37-A in U.S. Geological Survey. Professional Paper 1249. 1982.
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Index card: The Toutle River near Interstate 5 soon after the May 18, 1980, mudflow. View from photo station, Toutle River at Highway 99, looking downstream at the Interstate 5 bridge. Cowlitz County, Washington. July 6, 1980.
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Index card: Aerial view looking back at Mount St. Helens. Note the three layers - blue sky above, the airborne ash layer, green landscape below. Volcano itself is not visible. Skamania County, Washington. August 7, 1980.
map background search result map search result map Muddy River rock. Mount St. Helens, Skamania County, Washington. 1980. Oblique aerial view of Swift Reservoir. Mount St.Helens, Skamania County, Washington. 1980. Railroad bridge, South Fork Toutle River. Mount St. Helens, Cowlitz County, Washington. 1980. Oblique aerial view of devastation at Green River Fish Hatchery, near Kid Valley. Mount St. Helens, ​Cowlitz County, Washington. 1980. Geologist J.R. Williams examines a fumarole area. Mount St. Helens, Washington. 1980. Oblique aerial view of pyroclastic flow pattern. Mount St. Helens, Washington. 1980. Numerous pools left in Mount St. Helens debris. Cowlitz County, Washington. 1980. Trees blasted down in a 150-square-mile area. Mount St. Helens, Washington. 1980. Trees torn from their base on Harry's Ridge. Mount St. Helens, Skamania County, Washington. 1980. New vegetation breaking through ash deposits from Mount St. Helens along the North Fork Toutle River, Cowlitz County, Washington. 1980. Mount St. Helens, during the August 7 eruption. Skamania County, Washington. 1980. Spirit Lake. Mount St. Helens, Skamania County, Washington. 1980. March 1983 spine on the new lobe of Mount St. Helens dome. Skamania County, Washington. 1983. Mount St. Helens ash burst in progress. Skamania County, Washington. 1983. Stream gaging, Toutle River. Mount St. Helens, Cowlitz County, Washington. 1981. The Toutle River near Interstate 5, soon after the May 18 mudflow. Mount St. Helens, Cowlitz County, Washington. 1980. Clean water flowing from spring in the Mount St. Helens blast area near Elk Rock. Cowlitz County, Washington. 1980. Aerial view looking back at Mount St. Helens. Skamania County, Washington. 1980. Aerial view of blowdown, North Fork Toutle River, near Elk Rock, 11 miles downstream from Mount St. Helens. Cowliutz County, Washington. 1980. Mount St. Helens dome. ​Skamania County, Washington. 1983. Railroad bridge, South Fork Toutle River. Mount St. Helens, Cowlitz County, Washington. 1980. Oblique aerial view of devastation at Green River Fish Hatchery, near Kid Valley. Mount St. Helens, ​Cowlitz County, Washington. 1980. Numerous pools left in Mount St. Helens debris. Cowlitz County, Washington. 1980. New vegetation breaking through ash deposits from Mount St. Helens along the North Fork Toutle River, Cowlitz County, Washington. 1980. Stream gaging, Toutle River. Mount St. Helens, Cowlitz County, Washington. 1981. The Toutle River near Interstate 5, soon after the May 18 mudflow. Mount St. Helens, Cowlitz County, Washington. 1980. Clean water flowing from spring in the Mount St. Helens blast area near Elk Rock. Cowlitz County, Washington. 1980. Aerial view of blowdown, North Fork Toutle River, near Elk Rock, 11 miles downstream from Mount St. Helens. Cowliutz County, Washington. 1980. Muddy River rock. Mount St. Helens, Skamania County, Washington. 1980. Oblique aerial view of Swift Reservoir. Mount St.Helens, Skamania County, Washington. 1980. Trees torn from their base on Harry's Ridge. Mount St. Helens, Skamania County, Washington. 1980. Mount St. Helens, during the August 7 eruption. Skamania County, Washington. 1980. Spirit Lake. Mount St. Helens, Skamania County, Washington. 1980. March 1983 spine on the new lobe of Mount St. Helens dome. Skamania County, Washington. 1983. Mount St. Helens ash burst in progress. Skamania County, Washington. 1983. Aerial view looking back at Mount St. Helens. Skamania County, Washington. 1980. Mount St. Helens dome. ​Skamania County, Washington. 1983. Geologist J.R. Williams examines a fumarole area. Mount St. Helens, Washington. 1980. Oblique aerial view of pyroclastic flow pattern. Mount St. Helens, Washington. 1980. Trees blasted down in a 150-square-mile area. Mount St. Helens, Washington. 1980.