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Amu Darya
Amu Darya or Amudarya , river, c.1,600 mi (2,580 km) long, formed by the junction of the Vakhsh and Pandj rivers, which rise in the Pamir Mts. of central Asia. It flows generally northwest, marking much of the northern border of Afghanistan with Tajikistan, Uzbekistan, and Turkmenistan before fl...
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Reynolds number
Reynolds number [for Osborne Reynolds ], dimensionless quantity associated with the smoothness of flow of a fluid. It is an important quantity used in aerodynamics and hydraulics. At low velocities fluid flow is smooth, or laminar, and the fluid can be pictured as a series of parallel layers, or l...
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Angara
Angara , river, c.1,150 mi (1,850 km) long, SE Siberian Russia, the outlet of Lake Baykal . After leaving the southwestern end of Lake Baykal, it flows north past Irkutsk and Bratsk, then turns west after receiving the Ilim River and flows into the Yenisei River near Strelka. Below its junction...
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Blue Nile
Blue Nile Arab. Al Bahr al Azraq, river, c.1,000 mi (1,600 km) long, the chief headstream of the Nile, rising in Lake Tana, NW Ethiopia, at an altitude of c.6,000 ft (1,800 m). It flows generally S from the Lake Tana region, then W across Ethiopia, and finally NW into Sudan. At Khartoum the Blue ...
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Cher
Cher river, c.200 mi (320 km) long, rising in the Massif Central and flowing generally NW across central France to join the Loire below Tours. The Berry Canal parallels part of the river.
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Churchill Falls
Churchill Falls spectacular waterfalls of the upper Churchill River, 245 ft (75 m) high, SW Labrador, N.L., Canada; known as Grand Falls until renamed (1965) in honor of Sir Winston Churchill. The falls were first explored (1839) by John McLean, a trader of the Hudson Bay Company. Four miles (6.4 k...
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Fitzroy
Fitzroy rivers in Australia. 1 River, 174 mi (280 km) long, formed by the junction of the Dawson and the Mackenzie rivers, E Queensland, Australia, and flowing past Rockhampton to Keppel Bay of the Coral Sea. 2 River, c.325 mi (525 km) long, rising in the eastern Kimberley Plateau, N Western Au...
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Krishna
Krishna or Kistna , river, c.800 mi (1,290 km) long, rising in Maharashtra state, central India, in the Western Ghats, and flowing SE through Karnataka and Andhra Pradesh states to the Bay of Bengal. The river supplies water for the irrigation of extensive areas in all three states; its flow flu...
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Mystic
Mystic 1 River, c.10 mi (16 km) long, rising in SE Conn. and flowing S past Old Mystic and Mystic villages to the Long Island Sound. Mystic Seaport, a maritime museum, is at its mouth. 2 River, c.7 mi (11 km) long, rising in Mystic Lakes, E Mass., and flowing SE, past Medford, into Boston Harbo...
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Vaal
Vaal , river, c.750 mi (1,210 km) long, rising in Mpumalanga, NE South Africa, and flowing SW to the Orange River. It forms most of the northern border of the Free State . The river's flow is almost totally regulated and provides water power for industries on the Witwatersrand . Vaal Dam, one of t...
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