48     1108 The Canadian River Basin
48     1109 Lower Canadian
48     1110 The North Canadian River Basin
48     1112 The North Fork Red River
48     1113 Red-Washita
48     1114 Red Sulphur
48     1201 The Sabine River Basin
48     1202 The Neches River Basin
48     1203 The Trinity River Basin
48     1204 Galveston Bay-San Jacinto
48     1205 The Brazos River Basin
48     1206 Middle Brazos
48     1207 Lower Brazos
48     1208 The Colorado River Basin
48     1209 Lower Colorado-San Bernard Coastal
48     1210 Central Texas Coastal
48     1211 Nueces-Southwestern Texas Coastal
48     1303 Rio Grande-Mimbres
48     1304 Rio Grande-Amistad
48     1305 Rio Grande Closed Basins
48     1306 The Pecos River Basin
48     1307 Lower Pecos
48     1308 Rio Grande-Falcon
48     1309 Lower Rio Grande