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Raisin, river, United States

(Encyclopedia)Raisin, river, 115 mi (185 km) long, rising in S Mich. and flowing E to Lake Erie at Monroe, Mich. After Detroit's surrender in the War of 1812, U.S. troops under Gen. James Winchester, sent to retake...

Osage, river, United States

(Encyclopedia)Osage, river, c.360 mi (580 km) long, formed by the confluence of the Marais des Cygnes and the Little Osage rivers, W Mo. It flows NE to join the Missouri River near Jefferson City. Bagnell Dam (comp...

Oswego, river, United States

(Encyclopedia)Oswego, river, 23 mi (37 km) long, formed by the confluence of the Oneida and the Seneca rivers, central N.Y., NW of Syracuse and flowing NW to Lake Ontario at Oswego. It has been canalized and incorp...

Pearl, river, United States

(Encyclopedia)Pearl, river, 485 mi (781 km) long, rising in E Miss. and flowing S to Lake Borgne, an inlet of the Gulf of Mexico; its lower section (116 mi/187 km) forms the Miss.-La. boundary. Above Jackson, Miss....

Pecos, river, United States

(Encyclopedia)Pecos, river, 926 mi (1,480 km) long, rising in N N.Mex. near the Truchas peaks and flowing SE across E N.Mex. and W Tex. to the Rio Grande; drains c.38,300 sq mi (99,200 sq km). In New Mexico, dams a...

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 ...

flood, in hydrology

(Encyclopedia)flood, inundation of land by the rise and overflow of a body of water. Floods occur most commonly when water from heavy rainfall, from melting ice and snow, or from a combination of these exceeds the ...