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3 days ago · Columbia River, largest river flowing into the Pacific Ocean from North America. The Columbia is one of the world’s greatest sources of hydroelectric power and, with its tributaries, represents a third of the potential hydropower of the United States. It is 1,240 miles (2,000 km) long.
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This multipurpose development of the Columbia’s main stem...
- Lewiston
Lewiston, city, seat (1861) of Nez Perce county,...
- Willamette
An eight-month growing season, an annual rainfall of 40...
- Columbia Plateau
Columbia Plateau, geographic region, northwestern United...
- Astoria
Astoria, city, seat (1844) of Clatsop county, northwestern...
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1 day ago · The West has several long rivers that empty into the Pacific Ocean, while the eastern rivers run into the Gulf of Mexico. The Mississippi River forms the easternmost possible boundary for the West today.
Jul 16, 2024 · Rising in western uplands, notably in the foothills of the Rockies, rivers such as the Red, Arkansas, Kansas, Platte, and Missouri remove considerable silt loads from the rolling expanses of the Great Plains.
3 days ago · The North American Cordillera covers an extensive area of mountain ranges, intermontane basins, and plateaus in Western and Northwestern Canada, Western United States, and Mexico, including much of the territory west of the Great Plains.
1 day ago · This is a list of some of the ways regions are defined in the United States. Many regions are defined in law or regulations by the federal government; others by shared culture and history, and others by economic factors. Interstate regions. Census Bureau–designated regions and divisions. U.S. Census Bureau regions and divisions.
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Jul 19, 2024 · The Commonwealth is bordered by seven states: Indiana, Ohio, West Virginia, Virginia, Tennessee, Missouri and Illinois. The Ohio River flows 664 miles (1,068 kilometers) along the northern and western borders of the state.