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Dams of the Columbia River Basin. Click to view higher resolution and read legend. Hydroelectric generators in the basin sized by capacity. 17 dams on the British Columbia side of Canada-US border not shown. There are more than 60 dams in the Columbia River watershed in the United States and Canada. Tributaries of the Columbia River and their ...
The Cascade Locks and Canal was a navigation project on the Columbia River between the U.S. states of Oregon and Washington, completed in 1896. It allowed the steamboats of the Columbia River to bypass the Cascades Rapids , and thereby opened a passage from the lower parts of the river as far as The Dalles .
The John Day Lock has the highest lift (at 110 feet or 34 meters) of any U.S. lock. [4] The reservoir impounded by the dam is Lake Umatilla, [5] and it runs 76.4 miles (123.0 km) up the river channel to the foot of the McNary Dam. John Day Dam is part of the Columbia River Basin system of dams.
The Chinook tribe, which is not federally recognized, who live near the lower Columbia River, call it Wimahl or Wimal in the Upper Chinook (Kiksht) language, [52] and it is Nch’i-Wàna or Nchi wana to the Sahaptin (Ichishkíin Sɨ́nwit)-speaking peoples of its middle course in present-day Washington. [53]
Bonneville Lock and Dam / ˈ b ɒ n ə v ɪ l / consists of several run-of-the-river dam structures that together complete a span of the Columbia River between the U.S. states of Oregon and Washington at River Mile 146.1. [6] The dam is located 40 miles (64 km) east of Portland, Oregon, in the Columbia River Gorge.
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The Columbia River is the only river on the West Coast (and arguably the entire North American Pacific coast) that is navigable for a significant length. The river is regularly dredged, and freight barges may reach as far inland as Lewiston, Idaho , through a system of locks; however, there are strict draft restrictions beyond the confluence ...
The debris slid into the Columbia Gorge close to modern-day Cascade Locks, Oregon, blocking the Columbia River with a natural dam approximately 200 feet (61 m) high and 3.5 miles (5.6 km) long. The impounded river formed a lake and drowned a forest of trees for about 35 miles (56 km).