The Upper Arkansas Region encompasses 7,452 square miles in northern Oklahoma. The region is supplied by three major rivers: the Arkansas, Cimarron, and Salt Fork of the Arkansas.

The Upper Arkansas accounts for 7% of the state�s total water demand. Surface water supplies are used to meet about 69% of the region�s demand. The largest demand sectors are Municipal and Industrial (37%) and Thermoelectric Power (29%).

By 2060, this region is projected to have a total demand of 182,770 acre-feet per year (AFY), an increase of approximately 54,200 AFY (42%) from 2010.