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United States

(Encyclopedia)CE5 CE5 CE5 United States, officially United States of America, republic (2015 est. pop. 319,929,000), 3,539,227 sq mi (9,166,598 sq km), North America. The United States is the world's third l...

Tennessee Valley Authority

(Encyclopedia)Tennessee Valley Authority (TVA), independent U.S. government corporate agency, created in 1933 by act of Congress; it is responsible for the integrated development of the Tennessee River basin. The h...

Tennessee-Tombigbee Waterway

(Encyclopedia)Tennessee-Tombigbee Waterway, system of navigation channels, 234 mi (377 km) long, Ala. and Miss., connecting the Tennessee River with the Tombigbee River and, via the Mobile River, with the Gulf of M...

Columbia, river, Canada and the United States

(Encyclopedia)Columbia, river, c.1,210 mi (1,950 km) long, rising in Columbia Lake, SE British Columbia, Canada. It flows first NW in the Rocky Mt. Trench, then hooks sharply about the Selkirk Mts. to flow S throug...

Flathead, river, Canada and the United States

(Encyclopedia)Flathead flătˈhĕd [key], river, c.240 mi (390 km) long, rising as the North Fork, in SE British Columbia, Canada, and flowing generally SE through NW Montana, to Coram, where it is joined by the Mi...

Kootenai, river, Canada and the United States

(Encyclopedia)Kootenai ko͞oˈtĭnā [key], river, 407 mi (655 km) long, rising in the Rocky Mts., SE British Columbia, Canada. It flows S into NW Montana, NW through N Idaho, then N into Canada. There it flows thr...

Yukon, river, Canada and the United States

(Encyclopedia)Yukon yo͞oˈkŏn [key], river, c.2,000 mi (3,220 km) long, rising in Atlin Lake, NW British Columbia, Canada, and receiving numerous headwater streams; one of the longest rivers of North America. It ...

Red River, rivers, United States and Canada

(Encyclopedia)Red River. 1 River, 1,222 mi (1,967 km) long, southernmost of the large tributaries of the Mississippi River. It rises in two branches in the Texas Panhandle and flows SE between Texas and Oklahoma an...

Saint John, river, United States and Canada

(Encyclopedia)Saint John, river, 418 mi (673 km) long, rising in N Maine and flowing NE to New Brunswick, Canada, then SE below Edmundston, past St. Leonard, Grand Falls, Woodstock, and Fredericton to the Bay of Fu...

Rio Grande, river, United States and Mexico

(Encyclopedia)Rio Grande rēˈō grănd, rēˈō gränˈdē [key], river, c.1,885 mi (3,000 km) long, rising in SW Colo. in the San Juan Mts. and flowing south through the middle of N.Mex., past Albuquerque, then c...

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