Jaci Paraná River

Jaci Paraná River
Native name	Rio Jaci Paraná
Country	Brazil
Basin features
Main source	Rondônia state
River mouth	9°12′57″S 64°23′08″W / 9.215724°S 64.385614°W / -9.215724; -64.385614Coordinates: 9°12′57″S 64°23′08″W / 9.215724°S 64.385614°W / -9.215724; -64.385614
River system	Madeira River
Tributaries	Left: Formoso River Right: Branco River

The Jaci Paraná River (Portuguese: Rio Jaci Paraná) is a river of Rondônia state in western Brazil. It is a tributary of the Madeira River, which it joins at Jaci Paraná in the municipality of Porto Velho, Rondônia

Tributaries of the Jaci Paraná river basin rise in the 216,568 hectares (535,150 acres) Guajará-Mirim State Park, created in 1990. The river forms the western boundary of the 197,364 hectares (487,700 acres) Jaci Paraná Extractive Reserve, created in 1996.

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