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  2. Missoula floods - Wikipedia

    en.wikipedia.org/wiki/Missoula_floods

    These floods were the result of periodic sudden ruptures of the ice dam on the Clark Fork River that created Glacial Lake Missoula. After each ice dam rupture, the waters of the lake would rush down the Clark Fork and the Columbia River, flooding much of eastern Washington and the Willamette Valley in western Oregon. After the lake drained, the ...

  3. 1948 Columbia River flood - Wikipedia

    en.wikipedia.org/wiki/1948_Columbia_River_flood

    The 1948 Columbia River flood (or Vanport Flood) was a regional flood that occurred in the Pacific Northwest of the United States and Canada. Large portions of the Columbia River watershed were impacted, including the Portland area, Eastern Washington, northeastern Oregon, Idaho Panhandle, northwestern Montana, and southeastern British Columbia.

  4. 1996 Pacific Northwest floods - Wikipedia

    en.wikipedia.org/wiki/1996_Pacific_Northwest_floods

    The 1996 Pacific Northwest floods were a series of floods in Washington, Oregon, and the Idaho Panhandle in the United States. Large portions of the Columbia River and Puget Sound watersheds were impacted, including the Portland, Yakima, and the Palouse region. The flood was largely caused by warm temperatures and heavy rain falling on ...

  5. Columbia River Basalt Group - Wikipedia

    en.wikipedia.org/wiki/Columbia_River_Basalt_Group

    The Columbia River Basalt Group (including the Steen and Picture Gorge basalts) extends over portions of four states. The Columbia River Basalt Group (CRBG) is the youngest, smallest and one of the best-preserved continental flood basalt provinces on Earth, covering over 210,000 km 2 (81,000 sq mi) mainly eastern Oregon and Washington, western Idaho, and part of northern Nevada. [1]

  6. Columbia River - Wikipedia

    en.wikipedia.org/wiki/Columbia_River

    The Columbia River (Upper Chinook: Wimahl or Wimal; Sahaptin: ... After the floods, the river found its present course, and the Grand Coulee was left dry.

  7. As erosion and floods swallow buildings, Washington's ... - AOL

    www.aol.com/erosion-floods-swallow-buildings...

    Coastal flooding fueled by climate change, dam-building, and other human activity threatens that economy. ... There, sediment from the Columbia River tends to build up, or accrete. The farther a ...

  8. Flood history in Chehalis, Washington - Wikipedia

    en.wikipedia.org/wiki/Flood_history_in_Chehalis...

    A Cowlitz River overflow in 1946 affected the city. The weather pattern that caused the 1948 Columbia River flood was a widespread disaster throughout the region and both the Chehalis and Newaukum crested, leading to closures of roads and the airport. [11] [19] A 1949 rainfall event affected the city as the Cowlitz overflowed. [38]

  9. PHOTOS: Historic rainfall breaches dams, floods Columbia in 2015

    www.aol.com/news/photos-historic-rainfall...

    Heavy rains from Hurricane Joaquin caused Gills Creek to overflow its banks on Oct. 4, 2015.