Iriri River Terra do Meio Ecological Station. The river varies greatly in volume depending on the season, and in the dry season include waterfalls, rocks and rapids. The Iriri River flows through the Tapajós-Xingu moist forests ecoregion. The river is rich in fish, including many species found only here and in the Xingu. Large sections remain unexplored due to its remoteness in a region surrounded by Amazon rainforest, and sections with strong current and cataracts. 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
American River biodiversity of the American River. The American River is utilized for a variety of recreational uses. Locals and travelers alike use the river’s scenic landscape for bird watching, hiking, biking, fishing, river rafting, kayaking, and more. Although the American River allows small motor boats for part of the year, it remains free from speed boats or boats that use fuel, which makes it a clean, biodiverse river that people can safely swim in and do other recreational activities in. The American River is specifically known for its whitewater rafting. The South Fork has Class III rapids, the Middle Fork has