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The Columbia River (Upper Chinook: Wimahl or Wimal; Sahaptin: Nch’i-Wàna or Nchi wana; Sinixt dialect swah'netk'qhu) is the largest river in the Pacific Northwest region of North America. [14] The river forms in the Rocky Mountains of British Columbia, Canada.
Interstate 90 follows much of the upper course of the river from Butte to Saint Regis. The highest point within the river's watershed is Mount Evans at 10,641 feet (3,243 m) in Deer Lodge County, Montana along the Continental Divide. [12] The Clark Fork is a Class I river for recreational purposes in Montana from Warm Springs Creek to the Idaho ...
Kootenay River (British Columbia, Idaho, Montana; see below for sub-tributaries) Hugh Keenleyside Dam and Arrow Lakes (British Columbia) Whatshan River (British Columbia)
Jun. 14—David Moskowitz hasn't been everywhere in the Columbia River basin, but it's got to be close. Moskowitz, a photographer who lives in the Methow Valley, spent the last four years ...
Bathymetric map of the Columbia River mouth: isobaths at five-foot (1.5 m) intervals, 15–310 feet (4.6–94.5 m). Sandbars in yellow. The Columbia Bar is a system of bars and shoals at the mouth of the Columbia River spanning the U.S. states of Oregon and Washington.
[73]: 221–222 [82]: 237 By 8.5 Ma the Salmon-Clearwater was established in the Columbia River's modern path through Wallula Gap, although the Columbia itself still flowed somewhere to the west. The last of the Columbia basalt flows occurred around 6 Ma; by then, the present-day confluence of the Columbia River and Salmon-Clearwater had been ...
The Columbia River and its tributaries generate 40% of U.S. hydropower, irrigate $8 billion in agriculture products and move 42 million tons of cargo annually, according to the Biden administration.
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 ...