Digital elevation model of South Fork Toutle River, Mount St. Helens, based on June–July 1980 airborne photogrammetry

The lateral blast, debris avalanche, and lahars of the May 18th, 1980, eruption of Mount St. Helens, Washington, dramatically altered the surrounding landscape. The eruption produced mudflows in the South Fork Toutle River basin, which drains the western slopes of the volcano. Orthophotography was acquired shortly after the eruption (June 19 and July 1). Survey extent includes South Fork Toutle River, from its headwaters at Talas and Toutle Glaciers to its mouth at the confluence with North Fork Toutle River near Toutle, Washington. In 2004, Photo Sciences, Inc., under contract to the U.S. Geological Survey (USGS), used softcopy photogrammetry techniques to produce a contour map, breaklines, and masspoints. A USGS...

Tags: Cascade Range, Cowlitz County, DEM, Ecology, Forestry, All tags... Geography, Geomorphology, Glaciology, Hydrology, Land Use Change, Loowit, Mount St. Helens, Remote Sensing, Sedimentology, South Fork Toutle River, Toutle River, USA, USGS Science Data Catalog (SDC), Volcanology, WA, Water Quality, Water Resources, biota, digital elevation model, elevation data, geomorphology, hydrology, photogrammetry, sediment, topography, volcanic landforms, volcano, Fewer tags