The Southern Plains & Rio Grande Basin map
This map covers all of the Rio Grande Basin, from the Rockies in Southern Colorado to the Gulf of Mexico, and including most of the Rio Grande’s basin in northern Mexico. Nearly all of the Arkansas River is included on the north, and the Ozark Plateau and Ouachita Mountains on the east.
The map includes all of Texas and Oklahoma, most of New Mexico, a lot of Colorado, Kansas, and Arkansas as well as northern Mexico, and smaller corners of other neighboring states.
Small - Scale is 1:2 million or 1" = about 32 milesLarge
- Scale is 1:1.5 million or 1" = about 24 miles