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
South Branch Piscataquog River South Branch Piscataquog River The South Branch of the Piscataquog River is a river located in southern New Hampshire in the United States. It is a tributary of the Piscataquog River, part of the Merrimack River watershed. The South Branch of the Piscataquog begins at the outlet of Pleasant Pond in Francestown, New Hampshire. The river travels south-southeast until entering New Boston, where it turns northeast to flow to the Piscataquog River just over the town line in Goffstown. For most of its route, the South Branch passes through rolling, hilly country, occasionally dropping over small waterfalls. New Hampshire Route