Reconnaissance investigation of the ground-water resources of the Brazos River basin, Texas

The Brazos River Basin in Texas extends from the New Mexico State line southeastward to the Gulf of Mexico. The basin is about 600 miles long and ranges in width from 1 to 120 miles--an area of about 42,000 square miles, which includes all or parts of 69 counties. About 1,385,000 persons reside in the basin.