Rio Grande River

The Rio Grande River drops 12,000 feet from source to mouth. As a snow-fed torrent, carver of canyons, desert streams, and a meandering coastal river. Along its banks and in its valley Indian civilizations developed and the white man made some of his first North American settlements. The Rio Grande River is an international boundary, and the picture shown was taken on the bridge crossing from country to country.




The Trinity River is the longest river having its entire course within the state. Though smaller than several other Texas river basins, the Trinity has been recognized during the first half of the twentieth century as the one with the largest population and the greatest amount of industrial development. The annual flow of the stream is highly irregular because much of the watershed’s rainfall is so concentrated causing several disastrous floods before a 1944 flood control act provided relief.





