The Southwest Region encompasses 4,045 square miles in the southwest corner of Oklahoma. The region is supplied by three major rivers: the North Fork of the Red, Elm Fork of the Red, and Salt Fork of the Red.

The Southwest Region accounts for 9% of the state’s total water demand. Surface water supplies are used to meet about 38% of the region’s demand. The largest demand sector is Crop Irrigation (87%).

By 2060, this region is projected to have a total demand of 213,100 acre-feet per year (AFY), an increase of approximately 36,100 AFY (20%) from 2010.