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
Red River of the South and Spain. That boundary continued to be recognized when Mexico gained its independence from Spain, then again when Texas became independent from Mexico. It remained so until the United States Congress consented to the Red River Boundary Compact adopted by the states of Oklahoma and Texas, which set the jurisdictional boundary between Texas and Oklahoma at the vegetation line on the south bank, but left title of adjacent property owners at the south bank. The Red River Campaign (March–May 1864) was fought along the Red River Valley in Louisiana during the American Civil War. It was a failed attempt by