Prelims ask
US source, Mexico border, Gulf of Mexico, Río Bravo.
North America
Rio Grande
Among the longer rivers of North America. Longer than the Colorado.
- Source
- Rocky Mountains, Colorado (San Juan Mountains).
- Countries
- United States and Mexico. It is the border for the lower and middle course.
- Direction
- Southeast.
- Mouth
- Gulf of Mexico.
- Length
- About 3,050 km.
- Major tributaries
- Pecos from the United States. Rio Conchos from Mexico, which often supplies more water than the upstream Rio Grande.
- Delta or estuary
- Small delta on the Gulf.
- Basin
- Boundary river under a water treaty. Stretches run dry.
- One exam fact
- In Mexico the name is Río Bravo del Norte. The source is in the United States, not in Mexico.
Mains use
A classic boundary river whose tributary from the downstream state can dominate the flow.