Gurupí River

Gurupí River
Native name	Rio Gurupí
Country	Brazil
Basin features
Main source	Maranhão state
2nd source	Pará state
River mouth	Atlantic ocean 1°07′01″S 46°03′18″W / 1.116806°S 46.055048°W / -1.116806; -46.055048Coordinates: 1°07′01″S 46°03′18″W / 1.116806°S 46.055048°W / -1.116806; -46.055048

The Gurupí River is a river in north-central Brazil which forms the boundary between Maranhão and Pará states. The Gurupí rises in the low hills which separate its basin from that of the Tocantins River to the south, and flows north into the Atlantic Ocean. The Serra do Tiracambu lies to the east, and separates the basin of the Gurupí from that of the Pindaré River.

Part of the basin lies in the 271,197 hectares (670,140 acres) Gurupi Biological Reserve, a full protected conservation unit created in 1988. Average annual rainfall is 2,169 millimetres (85.4 in). Temperatures range from 22 to 32 °C (72 to 90 °F) with an average of 27 °C (81 °F).^[1] The Gurupí basin is home to tropical moist broadleaf forest, and lies within the Tocantins-Araguaia-Maranhão moist forests ecoregion.

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