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Filters: Tags: Cowlitz County, Washington (X)

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Album caption, slide description, and slide index card: MSH-Branch of Exhibits no. 12cp: Mount St. Helens. Aerial view of mudflow deposits and damage along the north bank, North Fork Toutle River. Cowlitz County, Washington. May 26, 1980. (Photo by D. Dzurisin) (Same as MSH-BE-VOLC-0026ct) (msh_boe_volc0026_ct).
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Index card: Generalized map of flowage deposits from the May 18, 1980 eruption, around Mount St. Helens. Skamania and Cowlitz Counties, Washington.
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Index card: More distant view of area in photograph number 4 (msh_dsf00004_ct). Mudflow strand line on vegetable and debris hummock. Cowlitz County, Washington. August 2, 1980.
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Album caption and index card: Oblique aerial view of the confluence of Columbia and Cowlitz Rivers showing suspended sediment and debris in the Cowlitz River caused by the eruption of Mount St. Helens on May 18, 1980. City of Longview in background. Cowlitz County, Washington. May 23, 1980. Published as figure 12 in U.S. Geological Survey. Circular 850-K. 1983.
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Index card: Aerial view of Camp Baker and mudflows in North Fork Toutle River on May 20, 1980. Cowlitz County, Washington.
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Index card: Front end loader removing mud from SR 504 about 2 miles upstream from Coal Bank bridge. Cowlitz County, Washington. July 15, 1980.
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Index card: South abutment and piers, Coal Bank bridge, on SR 504 along North Fork Toutle River. Cowlitz County, Washington. July 15, 1980.
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Index card: Near distal margin of debris flow about 3 miles east of Camp Baker. Cowlitz County, Washington. July 15, 1980.
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Index card: Graph showing the travel time of the mudflow event on the South Fork Toutle River and North Fork Toutle River. Note in the mid-range of both forks velocities were comparable. No velocities were collected to the upper reaches of the North Fork Toutle River. Note also the dots which show the travel time for flood event occurring August 27, 1980. Concentration of sediment from the May 18, 1980 mudflows range to 850,000 milligrams per liter, and the concentrations for the August 27, 1980 event ranged to 400,000 milligrams per liter. Travel times through the river reach, however, were not that much different. Cowlitz County, Washington. 1980.
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Index card: View of eroded avalanche and blast material in North Fork Toutle River valley, five miles downstream from mountain. Material is 450 feet deep at this point. Cowlitz County, Washington. 1980.
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Index card: I-5 bridge over Toutle River. Note mud line on left abutment and paint removed from main girder by logs. Cowlitz County, Washington. July 5, 1980.
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Album caption and index card: County bridge over South Fork Toutle River. Note marks from muddy logs that hit bottom of girder. Cowlitz County, Washington. July 7, 1980.
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Index card: View taken after the eruption of May 25, 1980, showing the remaining gully system on the left side of the North Fork Toutle valley with thickness of avalanche material ranging from 100 feet in the foreground to 150 feet in the upper portion of the view. This shot is taken approximately one mile downstream from Elk Rock, and at a subsequent location of a USGS gaging station. Cowlitz County, Washington. 1980.


map background search result map search result map View of North Fork Toutle valley gully system. Mount St. Helens, Cowlitz County, Washington. 1980. Eroded avalanche, North Fork Toutle River valley. Mount St. Helens, ​Cowlitz County, Washington. 1980. Coldwater Lake Exit Early Warning Flood Gage. Mount St. Helens, Cowlitz County, Washington. 1983. South abutment, Tower Road bridge, Toutle River. Cowlitz County, Washington. 1980. Rick Hoblitt and Norman Banks servicing time-lapse camera. Mount St. Helens, Cowlitz County, Washington. 1980. Mount St. Helens. Cowlitz County, Washington. 1980. Mount St. Helens. Cowlitz County, Washington. 1980. Oblique aerial view of the confluence of the Columbia and Cowlitz Rivers. Cowlitz County, Washington. 1980. Mudflow strand line on vegetable and debris hummock. Mount St. Helens, Cowlitz County, Washington. 1980. Aerial view of Toutle River debris flow surface. Mount St. Helens, Cowlitz County, Washington. 1980. Bridge washed out on SR 504 near Camp Baker. Cowlitz County, Washington. 1980. Aerial view of mudflow deposits and damage to the north bank of the North Fork Toutle River. Mount St. Helens, Cowlitz County, Washington. 1980. Graph showing the travel time of the mudflow event on the South Fork Toutle River and North Fork Toutle River. Mount St. Helens, Cowlitz County, Washington. 1980. Mount St. Helens. Cowlitz County and Skamania County, Washington. 1980. Mount St. Helens. Cowlitz County and Skamania County, Washington. Mount St. Helens. Cowlitz County, Washington. 1980. Mount St. Helens. Cowlitz County, Washington. 1980. Mount St. Helens. Cowlitz County, Washington. 1980. Mount St. Helens. Cowlitz County, Washington. 1980. View of North Fork Toutle valley gully system. Mount St. Helens, Cowlitz County, Washington. 1980. Eroded avalanche, North Fork Toutle River valley. Mount St. Helens, ​Cowlitz County, Washington. 1980. Coldwater Lake Exit Early Warning Flood Gage. Mount St. Helens, Cowlitz County, Washington. 1983. South abutment, Tower Road bridge, Toutle River. Cowlitz County, Washington. 1980. Mount St. Helens. Cowlitz County, Washington. 1980. Mount St. Helens. Cowlitz County, Washington. 1980. Oblique aerial view of the confluence of the Columbia and Cowlitz Rivers. Cowlitz County, Washington. 1980. Bridge washed out on SR 504 near Camp Baker. Cowlitz County, Washington. 1980. Aerial view of mudflow deposits and damage to the north bank of the North Fork Toutle River. Mount St. Helens, Cowlitz County, Washington. 1980. Graph showing the travel time of the mudflow event on the South Fork Toutle River and North Fork Toutle River. Mount St. Helens, Cowlitz County, Washington. 1980. Mount St. Helens. Cowlitz County, Washington. 1980. Mount St. Helens. Cowlitz County, Washington. 1980. Mount St. Helens. Cowlitz County, Washington. 1980. Mount St. Helens. Cowlitz County, Washington. 1980. Rick Hoblitt and Norman Banks servicing time-lapse camera. Mount St. Helens, Cowlitz County, Washington. 1980. Mudflow strand line on vegetable and debris hummock. Mount St. Helens, Cowlitz County, Washington. 1980. Aerial view of Toutle River debris flow surface. Mount St. Helens, Cowlitz County, Washington. 1980. Mount St. Helens. Cowlitz County and Skamania County, Washington. 1980. Mount St. Helens. Cowlitz County and Skamania County, Washington.