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Arkansas, river, United States

(Encyclopedia)Arkansas ärkănˈzəs, ärˈkənsôˌ [key], river, c.1,450 mi (2,330 km) long, rising in the Rocky Mts., central Colo., and flowing generally SE across the plains to the Mississippi River, SE Ark.; ...

Arkansas, state, United States

(Encyclopedia)CE5 Arkansas ärˈkənsôˌ, ärkănˈzŭs [key], state in the south-central United States. It is bordered by Tennessee and Mississippi, across the Mississippi River (E), Louisiana (S), Texas and O...

Saint Francis, river, United States

(Encyclopedia)Saint Francis, river, c.470 mi (760 km) long, rising in the hills of SE Missouri and flowing S through NE Arkansas to join the Mississippi River near Helena, Ark. The river forms part of the Arkansas�...

Roanoke, river, United States

(Encyclopedia)Roanoke, river, c.410 mi (660 km) long, rising in SW Va. and flowing generally southeast across the Blue Ridge Mts. and into Albemarle Sound, NE N.C. The lower river is navigable for small craft. A co...

Salinas, river, United States

(Encyclopedia)Salinas, river, c.150 mi (240 km) long, rising in the Santa Lucia Mts., S Calif., and flowing (partly underground) past King City, Paso Robles, and Salinas, NW to Monterey Bay. The irrigated valley is...

Mississippi, river, United States

(Encyclopedia)Mississippi, river, principal river of the United States, c.2,350 mi (3,780 km) long, exceeded in length only by the Missouri, the chief of its numerous tributaries. The combined Missouri-Mississippi ...

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...

Ohio, river, United States

(Encyclopedia)Ohio, river, 981 mi (1,579 km) long, formed by the confluence of the Allegheny and Monongahela rivers in SW Pa., at Pittsburgh; it flows northwest, then generally southwest to enter the Mississippi Ri...

Snake, river, United States

(Encyclopedia)Snake, river, 1,038 mi (1,670 km) long, NW United States, the chief tributary of the Columbia; once called the Lewis River. The Snake rises in NW Wyoming, in Yellowstone National Park, flows through J...

Hudson, river, United States

(Encyclopedia)Hudson, river, c.315 mi (510 km) long, rising in Lake Tear of the Clouds, on Mt. Marcy in the Adirondack Mts., NE N.Y., and flowing generally S to Upper New York Bay at New York City; the Mohawk River...