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The Arkansas River Valley, also known as the Arkansas Valley, is a region in Arkansas defined by the Arkansas River in the western part of the state. Generally defined as the area between the Ozark and Ouachita Mountains, [1] the River Valley is characterized by flat lowlands covered in fertile farmland and lakes periodically interrupted by high peaks.
The Arkansas Valley is a Level III ecoregion designated by the Environmental Protection Agency (EPA) in the U.S. states of Arkansas and Oklahoma.It parallels the Arkansas River between the flat plains of western Oklahoma and the Arkansas Delta, dividing the Ozarks and the Ouachita Mountains with the broad valleys created by the river's floodplain, occasionally interrupted by low hills ...
The Ohio River at Cairo is 281,500 cu ft/s (7,960 m 3 /s); [1] and the Mississippi River at Thebes, Illinois, which is upstream of the confluence, is 208,200 cu ft/s (5,897 m 3 /s). [66] The Ohio River flow is greater than that of the Mississippi River, so hydrologically the Ohio River is the main stream of the river system.
Over decades, they built what is the single largest earthwork enclosure complex in the Ohio River Valley. [6] The complex was one of hundreds of Native American ancient monuments identified and surveyed for the Smithsonian Institution in the mid-nineteenth century by Ephraim G. Squier and Edwin Hamilton Davis, from 1837 to 1847.
The Arkansas River is a major tributary of the Mississippi River. It generally flows to the east and southeast as it traverses the U.S. states of Colorado, Kansas, Oklahoma, and Arkansas. The river's source basin lies in Colorado, specifically the Arkansas River Valley. The headwaters derive from the snowpack in the Sawatch and Mosquito ...
Much of 18th century Trans-Appalachia, especially the Ohio River Valley, was defined by conflict over territory between the British, French, and Native Americans. Although the Proclamation of 1763 after the Seven Years War prohibited further settlement, significant migration to the region continued throughout the 1760s and 1770s. [ 4 ]
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Mississippi River. Arkansas River. Bayou Meto; Little Maumelle River; Maumelle River; Fourche La Fave River. South Fourche La Fave River; Cadron Creek; Point Remove Creek; Petit Jean River; Illinois Bayou; Big Piney Creek; Mulberry River; Poteau River. James Fork; Lee Creek; Illinois River. Flint Creek. Sager Creek; Hickory Creek; Neosho River ...