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Two Northwest tribes Monday called for removing three Columbia River dams — Bonneville, The Dalles and John Day — to support salmon recovery and help dwindling orcas.
Under the Columbia River Treaty, Canada was required to construct and operate 15.5 million acre-feet of reservoir storage in the upper Columbia River Basin for power generation and flood control downstream in Canada and the U.S. To achieve this storage, Canada was required to construct the following dams, all located within the province of British Columbia: IMPACTS OF DAMS ON FLOW REGIMES IN THREE HEADWATER SUBBASINS OF THE COLUMBIA RIVER BASIN, UNITED STATES1 Johnnie N. Moore, Alicia S. Arrigoni, and Andrew C. Wilcox2 ABSTRACT: We compared long-term changes in flow regimes resulting from climate change with those resulting from dams in three matched pairs of natural and modified headwater subbasins of the Columbia River… Size, however, is only one aspect of what makes the river particularly unique. Tributaries of the Columbia River and their dammed tributaries, as well as the main stem itself, each have their own list below.

Columbia Basin Project. The system of locks that accompany the dams make the Columbia a major transportation artery.
Uniqueness is also evident by looking at the Columbia River Basin. Irrigation from the waters of the Columbia system makes agriculture possible in many areas of the largely desert basin.

There are more than 60 dams in the Columbia River watershed in the United States and Canada. The Columbia Basin Project serves about 671,000 acres in east central Washington. Click to view higher resolution and read legend.

It is particularly known for its vast network of hydroelectric dams and the environmental and cultural controversies surrounding them. In a 1995 article about salmon and dams, High Country News interviewed Floyd Dominy, 84, who was commissioner of the Bureau of Reclamation during the Columbia River Basin dam-building frenzy of the 1950s and 1960s, and then-current commissioner Dan Beard, who was known for his anti-dam leanings. The impact of dams on the Columbia River Basin is profound. Home Page > Washington State Maps > Map of the Columbia River basin with dams highlighted. The dams are listed in the order as they are found from source to terminus.

Dams of the Columbia River Basin. The electric power generated supplies industry and homes throughout the region and is sold beyond the Northwest. The Columbia River Basin embodies the major challenges of river basin planning and management in the twenty-first century. Map of the Columbia River basin with dams highlighted. The Columbia River is the fourth largest river in North America. Originating in British Columbia, it flows 1,214 miles to the Pacific Ocean near Astoria, Oregon. The Columbia River carved the Interior Columbia River Basin from the landscape of seven Western states and two Canadian provinces.
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