Curuá River (Iriri River) Curuá River (Iriri River) The Curuá River is a tributary of the Iriri River in Pará state in north-central Brazil. It is a tributary of the Iriri River. The river flows through the Tapajós-Xingu moist forests ecoregion. The river rises in the Nascentes da Serra do Cachimbo Biological Reserve, a strictly protected conservation unit established in 2005. It is one of the headwaters of the Xingu River. The upper part and the lower part of the Curuá River are divided by two waterfalls, only apart. The first waterfall is tall and the second is tall. As a consequence, the fauna
North Fork American River Big Granite Creek then the North Fork of the American River come in from the right. The canyon shallows as the river turns southwest, carving through the Sierra foothills, then turning abruptly south near Colfax. About downstream, it receives Shirttail Creek from the left then is impounded in Lake Clementine (or North Fork Lake) which is formed by the North Fork Dam, built in 1939 to contain hydraulic mining debris. Below the dam, the river bends south, passing under the Foresthill Bridge, the highest bridge in California, then receives the Middle Fork American River, its largest tributary, from the left.