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Columbia River Basin. Wallula Gap (/ w ə ˈ l uː l ə /) is a large water gap of the Columbia River in the Northwestern United States, in Southeastern Washington.It cuts through the Horse Heaven Hills basalt anticlines in the Columbia River Basin, just south of the confluence of the Walla Walla and Columbia rivers.
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 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.
The Narrows: Located between Upper Arrow Lake and Lower Arrow Lake, where the Columbia's water flowed swiftly as a river for about 14 miles (23 km); [66] centered at The lower, southern end of The Narrows, where the river emptied into Lower Arrow Lake, was located at Burton near Cariboo Creek, 49°59′N 117°55′W / 49.983°N 117.917 ...
The book's arrival comes as the United States and Canada are renegotiating the Columbia River Treaty, a 60-year-old agreement that guides management of the river and its hydroelectric dams.
The Kettle River is a 281-kilometre (175 mi) tributary of the Columbia River, encompassing a 10,877-square-kilometre (4,200 sq mi) drainage basin, of which 8,228 square kilometres (3,177 sq mi) are in southern British Columbia, Canada and 2,649 square kilometres (1,023 sq mi) in northeastern Washington, US.
The ECBID is one of the three irrigation districts that distribute Columbia Basin Project water. "More than 75 years ago, state and federal agencies began an effort to divert 3% of Columbia River ...
The Columbia River flows from Canada south into Washington, where it is joined by water from the Snake River in Eastern Washington near the Tri-Cities to flow into the Pacific Ocean.