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Porcupine, river, Canada

(Encyclopedia)Porcupine pôrˈkyəpīnˌ [key], river, 448 mi (721 km) long, rising in the Ogilvie Mts., NW Yukon, Canada. It flows in a great arc NE through the Eagle Plain, then W into Alaska and to the Yukon Riv...

Parsnip, river, Canada

(Encyclopedia)Parsnip, river, c.150 mi (240 km) long, rising in central British Columbia, Canada, and flowing northwest to join the Finlay River at Williston Lake and form the Peace River. Explored by Sir Alexander...

Saskatchewan, river, Canada

(Encyclopedia)Saskatchewan, river, c.340 mi (550 km) long, formed by the confluence of the North Saskatchewan (c.760 mi/1,220 km long) and the South Saskatchewan (c.550 mi/890 km long) rivers near Prince Albert, ce...

Samara, river, Russia

(Encyclopedia)Samara səmäˈrə [key], river, c.360 mi (580 km) long, rising in the foothills of the S Urals, European Russia. It flows generally northwest, and joins the Volga River at Samara. ...

Tweed , river, Scotland

(Encyclopedia)Tweed, river, 97 mi (156 km) long, rising in the Southern Uplands of Scotland. It flows E through S Scotland then NE, forming the Scotland-England border for 17 mi (27 km) before entering the North Se...

Trent , river, England

(Encyclopedia)Trent, river, c.170 mi (270 km) long, rising on Biddulph Moor, Staffordshire, W England. It flows generally NE through central England before joining with the Ouse River to form the Humber estuary. Th...

Thompson , river, Canada

(Encyclopedia)Thompson, river, 304 mi (489 km) long, formed by the junction of the North Thompson and the South Thompson rivers at Kamloops, S British Columbia, and flowing W and S to the Fraser River at Lytton. Th...

Thames , river, Canada

(Encyclopedia)Thames tĕmz [key], river, c.160 mi (260 km) long, rising NW of Woodstock, S Ont., Canada, and flowing SW past London and Chatham to Lake St. Clair. It is navigable to Chatham, near which was fought (...

Thames , river, England

(Encyclopedia)Thames tĕmz [key], Rom. Tamesis, principal river of England, c.210 mi (340 km) long. It rises in four headstreams (the Thames or Isis, Churn, Coln, and Leach) in the Cotswold Hills, E Gloucestershire...

Niger, river, Africa

(Encyclopedia)Niger nīˈjər [key], great river of W Africa, c.2,600 mi (4,180 km) long, rising on the Fouta Djallon plateau, SW Guinea, and flowing NE through Guinea and into Mali. In central Mali the Niger forms...