The Arkansas River, swollen from water released upriver in Oklahoma, is expected to crest Wednesday near Fort Smith, Arkansas, at 41 feet, well above the previous record of 38.1 feet.

Every single county in Oklahoma is under a state of emergency, and evacuations are in effect along the flooded Arkansas River as intense rains are straining aging dams and levees. The water in ...

The Illinois River is drab green when it rushes into Oklahoma just south of here, but it’s not Arkansas mud that dirties the water ... extensive buffer strips along the river.

A water park ... The Waters of Oklahoma and Arkansas (WOKA) Whitewater Park is right on the Oklahoma and Arkansas border. WOKA is based in Watts along the Illinois River. It features a 1,200 ...