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Grand Coulee |
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Grand Coulee
a canyon in central Washington State, over 120 m (400 ft.) deep, at the N end of which is situated the Grand Coulee Dam, on the Columbia River. Height of dam: 168 m (550 ft.). Length of dam: 1310 m (4300 ft.) Grand Coulee a canyon on the northern Columbia plateau in the northwestern United States. It was formed by torrents of glacier waters cutting through a mass of basalt. Length, approximately 70 km; width, 2.5–7 km; depth, up to 270 m. It opens into the Columbia River valley near the city of Grand Coulee. The canyon bottom is generally dry, although there are some freshwater or saltwater lakes. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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