Santa Rosa River is a river of Acre state in western Brazil, a tributary of the Purus River.
The river defines the boundary between Peru and Brazil in the centre of the state of Acre, then runs for a short distance along the boundary of the Santa Rosa do Purus National Forest, a sustainable use conservation unit created in 2001, until it joins the Purus River opposite the community of Santa Rosa do Purus.
See also List of rivers of Acre
References
Brazilian Ministry of Transport