The Rio Grande in the United States or the Río Bravo (del Norte) in Mexico (Spanish pronunciation:
The … See more

Although the river's greatest depth is 60 feet (18 m), the Rio Grande generally cannot be navigated by passenger riverboats or by cargo barges. Navigation is only possible near the mouth of the river, in rare circum… See more

The sedimentary basins forming the modern Rio Grande Valley were not integrated into a single river system draining into the Gulf of Mexico until relatively recent geologic time. Instead, the basins formed by the opening of t… See more