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Filters: Tags: McKnight, D.M. Collection (X)

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Index card: Aerial view of debris flow in the Toutle River basin, showing erosion from snowmelt, and several small brightly colored (turquoise, yellow, brown) pools of water. Cowlitz County, Washington. May 1, 1981.
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Index card: Aerial view of Muddy River, showing debris flow from Mount St. Helens. Skamania County, Washington. September 11, 1980.
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Index card: Ashfall area of May 18, 1980 eruption of Mount St. Helens. Walupt Lake picnic area. View of Lake Walupt shore showing ash washing into lake. Yakima County, Washington. July 16, 1980.
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Index card: Ashfall area of May 18, 1980 eruption of Mount St. Helens, on road to Trout Lake, approximately 30 miles northeast of Mount St. Helens. View shows ash deposited on Douglas fir trees. Lewis County, Washington. July 16, 1980.
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Index card: Spirit Lake, taken from debris island looking northeast, showing fallen logs in foreground and devastated slopes in background. Skamania County, Washington. September 11, 1980.
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Index card: View of Robert Wissmar, University of Washington, and Diane McKnight, U.S. Geological Survey, collecting water sample of Castle Lake from tree stump along the shore. Cowlitz County, Washington. May 1, 1981.
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Index card: View of Spirit Lake, taken from debris island looking south toward Mount St. Helens, showing Jerry Franklin, U.S. Forest Service and Diane McKnight, U.S. Geological Survey, collecting water samples of Spirit Lake. View also shows blown down logs on debris island and floating in Spirit Lake. Skamania County, Washington. September 11, 1980.
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Index card: Near shore of St. Helens Lake, showing Estella Leopold, University of Washington, and Jerry Franklin, U.S. Forest Service, preparing equipment to sample algae in St. Helens Lake. Blown down logs visible in background. Skamania County, Washington. September 11, 1980. (Poor Photo)
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Index card: Spirit Lake, taken from debris island looking east, showing fallen logs in foreground and devastated slopes in background. Skamania County, Washington. September 11, 1980.
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Index card: Ashfall area of May 18, 1980 eruption of Mount St. Helens, on road to Trout Lake, approximately 30 miles northeast of Mount St. Helens. View shows ash deposited on Douglas fir trees. Lewis County, Washington. July 16, 1980.
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Index card: Ashfall area of May 18, 1980 eruption of Mount St. Helens. Walupt Lake picnic area, approximately 35 miles northeast of Mount St. Helens, showing ash deposited on picnic tables. Yakima County, Washington. July 16, 1980.
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Index card: Ashfall area of May 18, 1980 eruption of Mount St. Helens. View of Columbia River at Vantage, showing bridge of Interstate 90 that crosses the Columbia River, and ash cloud being blown from the west bank to the east bank of the river. Kittitas and Grant Counties, Washington. July 17, 1980.
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Index card: Blast zone of Mount St. Helens, showing new growth of fireweed on the periphery of the blast zone, near Elk Creek. Cowlitz County, Washington. September 10, 1980.
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Index card: Aerial view showing logging operation near Toutle River, near retaining structure. Cowlitz County, Washington. May 1, 1981.
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Index card: View of Spirit Lake, taken from debris island looking south toward Mount St. Helens, showing Jerry Franklin, U.S. Forest Service, and Diane McKnight, U.S. Geological Survey, collecting water samples of Spirit Lake. View also shows blown down logs on debris island and floating in Spirit Lake. Skamania County, Washington. September 11, 1980.
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Index card: Ashfall area of May 18, 1980 eruption of Mount St. Helens on road to Trout Lake, approximately 30 miles northeast of Mount St. Helens. View shows ash cloud behind card. Lewis County, Washington. July 16, 1980.
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Index card: View of Spirit Lake, taken from debris island, looking south toward Mount St. Helens showing Diane McKnight collecting water sample of Spirit Lake. Skamania County, Washington. September 11, 1980.
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Index card: Ashfall area of May 18, 1980 eruption of Mount St. Helens. View of ash deposited at the east bank of the Columbia River. Grant County, Washington. July 17, 1980.
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Index card: Looking up the slope from shore of Castle Lake, showing erosion of ash deposit by snowmelt runoff. Cowlitz County, Washington. May 1, 1981.
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Index card: Aerial view of retaining structure built by Army Corps of Engineers to control flooding of the Toutle River. Cowlitz County, Washington. May 1, 1981.


map background search result map search result map Mount St. Helens. Lewis County, Washington. 1980. Mount St. Helens. Lewis County, Washington. 1980. Mount St. Helens. Lewis County, Washington. 1980. Mount St. Helens. Yakima County, Washington. 1980. Mount St. Helens. Yakima County, Washington. 1980. Mount St. Helens. Grant County and Kittitas County, Washington. 1980. Grant County, Washington. 1980. Mount St. Helens. Cowlitz County, Washington. 1980. Mount St. Helens. Skamania County, Washington. 1980. Mount St. Helens. Skamania County, Washington. 1980. Mount St. Helens. Skamania County, Washington. 1980. Mount St. Helens. Skamania County, Washington. 1980. Mount St. Helens. Skamania County, Washington. 1980. Mount St. Helens. Skamania County, Washington. 1980. Mount St. Helens. Skamania County, Washington. 1980. Mount St. Helens. Cowlitz County, Washington. 1981. Mount St. Helens. Cowlitz County, Washington. 1981. Mount St. Helens. Cowlitz County, Washington. 1981. Mount St. Helens. Cowlitz County, Washington. 1981. Mount St. Helens. Cowlitz County, Washington. 1981. Mount St. Helens. Cowlitz County, Washington. 1980. Mount St. Helens. Cowlitz County, Washington. 1981. Mount St. Helens. Cowlitz County, Washington. 1981. Mount St. Helens. Cowlitz County, Washington. 1981. Mount St. Helens. Cowlitz County, Washington. 1981. Mount St. Helens. Cowlitz County, Washington. 1981. Mount St. Helens. Skamania County, Washington. 1980. Mount St. Helens. Skamania County, Washington. 1980. Mount St. Helens. Skamania County, Washington. 1980. Mount St. Helens. Skamania County, Washington. 1980. Mount St. Helens. Skamania County, Washington. 1980. Mount St. Helens. Skamania County, Washington. 1980. Mount St. Helens. Skamania County, Washington. 1980. Mount St. Helens. Lewis County, Washington. 1980. Mount St. Helens. Lewis County, Washington. 1980. Mount St. Helens. Lewis County, Washington. 1980. Grant County, Washington. 1980. Mount St. Helens. Yakima County, Washington. 1980. Mount St. Helens. Yakima County, Washington. 1980. Mount St. Helens. Grant County and Kittitas County, Washington. 1980.