Xingu peoples Xingu peoples Xingu peoples are indigenous peoples of Brazil living near the Xingu River. They have many cultural similarities despite their different ethnologies. Xingu people represent fifteen tribes and all four of Brazil's indigenous language groups, but they share similar belief systems, rituals and ceremonies. The Upper Xingu region was heavily populated prior to European and African contact. Densely populated settlements developed from 1200 to 1600 CE. Ancient roads and bridges linked communities that were often surrounded by ditches or moats. The villages were pre-planned and featured circular plazas. Archaeologists have unearthed 19 villages so far. Kuikuro oral history says
American River habitat. Nimbus Dam is downstream from Folsom Dam and helps to stabilize peaking power releases from Folsom Dam, and divert water into the Folsom South Canal for irrigation. Eight hydroelectric plants on the South Fork are operated by Sacramento Municipal Utility District (SMUD) as the Upper American River Project. These plants are fed by a series of reservoirs including Loon Lake, Ice House Reservoir and Union Valley Reservoir. With the exception of Folsom Lake, Union Valley is the largest in the American River watershed, storing of water. The Upper American River Project produces 1.8 billion kilowatt hours in an average