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Fifteenmile Creek is a 54-mile (87 km) long [3] tributary of the Columbia River in the U.S. state of Oregon. It drains 373 square miles (966 km 2) of Hood River and Wasco counties. Arising in the Cascade Range near Mount Hood, it flows northeast then west to its confluence with the Columbia near The Dalles.
Left tributary Right tributary Length (km) Basin size (km 2) . Average discharge (m 3 /s) . Lower Columbia. Mouth to Bonneville Dam. Youngs: 43 257.6 14.7 Grays: 48 320 15.9 Elochoman
The general outline of the Columbia Basin was not complete until between 60 and 40 million years ago, but it lay under a large inland sea later subject to uplift. [29] Between 50 and 20 million years ago, from the Eocene through the Miocene eras, tremendous volcanic eruptions frequently modified much of the landscape traversed by the Columbia. [30]
Averaging a major dam every 72 miles (116 km), the rivers in the Columbia watershed combine to generate over 36,000 megawatts of power, with the majority coming on the main stem. Grand Coulee Dam is the largest producer of hydroelectric power in the United States, [ 1 ] generating 6,809 megawatts, over one-sixth of all power in the basin.
Celilo Falls and The Dalles (many variant names including: The Chutes, Columbia Falls, Great Falls of the Columbia, Five Mile Rapids, Long Narrows, Les Grand Dalles de la Columbia, The Dalles of the Columbia): A series of rapids located between river mile 188 and 200 near today's The Dalles, Oregon in the Columbia River Gorge. The entire set of ...
The Columbia River Gorge is a canyon of the Columbia River in the Pacific Northwest of the United States. Up to 4,000 feet (1,200 m) deep, the canyon stretches for over eighty miles (130 km) as the river winds westward through the Cascade Range , forming the boundary between the state of Washington to the north and Oregon to the south. [ 1 ]
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 ...
The Dalles (/ ˈ d æ l z /) DALZ; formally the City of The Dalles and also called Dalles City, is an inland port and the largest city in Wasco County, Oregon, United States.The population was 16,010 at the 2020 census, and it is the largest city in Oregon along the Columbia River outside the Portland Metropolitan Area.
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