Arkansas River

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Lower Arkansas River

The Arkansas River is a tributary of the Mississippi which flows east and southeast through Colorado, Kansas, Oklahoma and the state of Arkansas. At 1450 miles (2334 km) it is the fourth longest river in the United States. Its origin is in the Colorado Rockies in Lake County near Leadville, and its outlet is at the historic site of Napoleon, Arkansas. It is the largest tributary in the Mississippi-Missouri system, with a drainage basin of nearly 195,000 sq. mi. (505,000 km²) (see 1 ( for a map of the watershed).

The Arkansas has three distinct characters in its long path through central North America. At its headwaters the Arkansas runs as a steep mountain torrent through the Rockies, dropping 4600 feet (1.4 km) in 120 miles (193 km). At Cañon City, Colorado, it leaves the mountains and enters Royal Gorge. For most of its length through the rest of Colorado and Kansas, it is a typical prairie river, with wide shallow banks, subject to some flooding. Through Oklahoma and Arkansas, the river deepens and builds once again into a navigable body of water somewhere between Fort Smith, Arkansas and Pine Bluff, according to the season. From this point to its mouth the Arkansas sees commercial barge traffic and some passenger and recreational use. The Kerr/McClellan Navigational Channel (also sometimes refered to as the Arkansas River Navigation System) begins at Catoosa, Oklahoma and run via an extensive Lock and Dam system to the Mississippi.

Important cities on the Arkansas include Wichita, Kansas; Tulsa, Oklahoma; and Little Rock, Arkansas.

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The headwaters of the Arkansas near Leadville, Colorado

Many nations of Native Americans lived near or along the Arkansas in its 1450 mile (2334 km) stretch, but the first Europeans to see the river were members of the Coronado expedition on June 29, 1541. Also in the 1540s Hernando de Soto discovered the junction of the Arkansas with the Mississippi. The name "Arkansas" was first applied by Father Jacques Marquette, who called the river Akansa in his journal of 1673.

From 1819 the Adams-Onís Treaty set the Arkansas as part of the frontier between the United States and Spanish Mexico, which it remained until the annexation of Texas and Mexican-American War in 1846. Later, the Santa Fe Trail followed the Arkansas through much of Kansas.


In contrast to the state Arkansas, which is always pronounced ARE-kan-saw, the river can be pronounced either ARE-kan-saw or are-KAN-zis, the latter is most common in the state of Kansas

See also

External links

it:Arkansas (fiume) sv:Arkansas River


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