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USGS scientists study hydrologic effects of Mount St. Helens eruption. Skamania County, Washington. 1980.


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Caption: Scientists studying hydrologic effects of Mount St. Helens eruption. Hydrologic analysdis including water flow rate, chemical composition, and temperature are shown being made by U.S. Geological Survey scientists near Washington state's Mount St. Helens volcano. The first eruption of the Cascade Mountain Range volcano in 123 years caused flooding and pollution of the waterways near the mountain. Studies such as these provide data that will help in preparations for future volcanic eruptions throughout the U.S. and other countries. According to the USGS, over 1 cubic kilometer of ash and rock were ejectd by the volcano during its main eruption on May 18, 1980. Measureable amounts of volcanic material were found on 11 western [...]


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U.S. Geological Survey

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PIO_80_181.tif 44.08 MB image/geotiff

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Available in the U.S. Geological Survey Denver Library Photographic Collection, 2010 DENPH0011, PIO Collection.


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Photo Number PIO_80_181

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