Iriri River Iriri River The Iriri River () is a large tributary of the Xingu River in Brazil, in the state of Pará. It is long making it the 116th longest river in the world (with Krishna River, India) and the 15th longest in the Amazon basin. The headwaters are the traditional home of the Panará people. The river rises in the Nascentes da Serra do Cachimbo Biological Reserve, a strictly protected conservation unit established in 2005 in the Serra do Cachimbo. It is one of the headwaters of the Xingu River. It flows for before joining the Xingu, running through the
Xingu State Park on the basis of a referendum of the people of Santa Cruz do Xingu by technicians from the State Environmental Foundation (FEMA). The agricultural frontier was limited by the amount of protected land, some of which had to be released for expansion of food production. The consultative council was established on 28 September 2007. The objectives are to protect and conserve the various ecosystems and to prevent human actions that would jeopardise the future of the many indigenous groups found in the park. The conservation unit is supported by the Amazon Region Protected Areas Program. Xingu State Park Xingu State