Concho River - Wikipedia
Geography. The Concho River has three primary feeds: the North, Middle, and South Concho Rivers. It is noteworthy that the South Concho River is the ONLY north flowing river in Texas. The North Concho River is the longest fork, starting in Howard County and traveling southeast for 88 mi (142 km) until merging with the South and Middle forks near Goodfellow Air Force Base in San Angelo, Texas.