The elevation of the middle of the arkansas river channel, due north of the arkansas state capitol placemark is 475 m above sea level.
The highest point in the state is located in the northwest part of the state, to the south of the Arkansas River. Signal Hill, (Mount Magazine) at 2,753 feet above sea level, is located in Logan County about 48 miles southeast of Fort Smith and about 90 miles northwest of Little Rock.
The Arkansas River is highly regarded as a river consisting of important geographical attributes in the regions that it flows in. It flows throughout the state of Oklahoma for the most part of it. As a result, the Oklahoma state derives numerous benefits out of it. Major tributaries of the Arkansas River in Oklahoma include the Canadian River, the Illinois River, and the Cimarron River.
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