Gravataí River (Portuguese pronunciation: [ɡɾavataˈi]) is a river that runs along Gravataí (a city located in the metropolitan area of Porto Alegre city).

Gravataí River
Ponte sobre o Rio Gravataí.JPG
Location
CountryBrazil
Physical characteristics
Source 
 ⁃ locationRio Grande do Sul state
MouthGuaíba River
 ⁃ coordinates
29°58′S 51°12′W / 29.967°S 51.200°W / -29.967; -51.200Coordinates: 29°58′S 51°12′W / 29.967°S 51.200°W / -29.967; -51.200