The following 10 rivers empty into the
Gulf of Mexico. Four of the rivers are tributaries: The
Pecos flows into the
Rio Grande, the
Red into the
Mississippi River, and the
Sabine and
Neches flow into
Sabine Lake which is connected to the Gulf of Mexico by
Sabine Pass. The Canadian is a tributary of a tributary and flows into the
Arkansas River which is itself a tributary of the Mississippi. •
Rio Grande – , of which are in Texas (although technically on the border between Texas and
Mexico) •
Red River – of which are in Texas •
Brazos River – of which are in Texas, making it the longest section of river in Texas •
Pecos River – most of which is in
New Mexico •
Colorado River – almost entirely in Texas of which are not dry •
Canadian River – of which are in Texas •
Trinity River – entirely in Texas •
Sabine River – of which are in Texas •
Neches River – entirely in Texas •
Nueces River – entirely in Texas The Trinity River is the longest river with its entire
drainage basin in
Texas. The Colorado is the longest river with both its
source based on river name and its
mouth in the state. The longest source of the Colorado of any kind is in
New Mexico. ==Shortest river==