- a river flowing from SW Colorado through central New Mexico and along the boundary between Texas and Mexico into the Gulf of Mexico. 1,800 miles (2,900 km) long.
- a river flowing W from SE Brazil into the Paraná River. 650 miles (1,050 km) long.
- São Pedro do Río Grande do Sul.
- a city in NE Puerto Rico.
- a river in central Nicaragua, flowing NE to the Caribbean Sea. About 200 miles (320 km) long.
- a river in North America, rising in SW Colorado and flowing southeast to the Gulf of Mexico, forming the border between the US and Mexico. Length: about 3030 km (1885 miles)
- a port in SE Brazil, in SE Rio Grande do Sul state: serves as the port for Porto Alegre. Pop: 188 000 (2005 est)
