← Texas History Chapter 1: Texas Rivers Export Options Alphabetize Word-Def Delimiter Tab Comma Custom Def-Word Delimiter New Line Semicolon Custom Data Copy and paste the text below. It is read-only. Select All Canadian farthest north Red border between Texas and Oklahoma Sabine border between Texas and Lousiana Neches below Sabine Trinity below Neches San Jacinto below Trinity Brazos below San Jacinto Colorado below Brazos Guadalupe below Colorado Nueces below Guadalupe Rio Grande border between Texas and Mexico Pecos far west Texas; feeds in Rio Grande