...Southwest Paddler, the most comprehensive resource for information related to outdoors recreation on and near the rivers, creeks and streams of Texas, Oklahoma, Arkansas, Missouri, New Mexico, Arizona, Colorado and Utah.
This guide is organized by state, and provides information about waterways and the businesses that cater to the outdoor adventurer looking for a place to enjoy paddlesports, camping, hiking, biking, hunting, fishing, nature photography or other leisurely pursuits in the great outdoors. -- Marc McCord
You really can't beat Marc's site for detailed info on paddling this part of the country. I will consider this site quite a success, if it can approach Southwest Paddler in its utility.