WaterWays

Great Plains:
Canadian River, Pecos River, Brazos River, Calorado River, Concho River, San Saba River, Llano River, Frio River.
Costal Plains:
Nueces R, Frio R, Medina R, San Antonio R, Guadelupe R, Colorado R, Little R, Brazos R, Rio Grande, San Jacinto R, Neches R, Trinity R, Sibine R, Sulphur R.
North Central Plains:
Wichita R, Little R, Brazos R, Calorado R, Red R.
Mountains and Basins:
Rio Grande, Pecos R.
WHY DO THE RIVERS FLOW BACKWARDS?
Texas rivers are sometimes called "Wrong Way" rivers because they carry water from the dry parts of the state, where it is needed, to the southeastern parts, which normally has plenty of water.