Salween River much of its length, the Salween's course is nearly parallel to that of the much larger Mekong in the east. Although the commonly accepted name is Salween, the river is known by a handful of other names regionally: "Nu" in China, "Thanlwin" in southern Burma, and "Salawin" on the border of Thailand and Burma. Several major sub-continental drainage basins border on the Salween. The Mekong basin forms nearly the entire eastern boundary of the watershed, while the Irrawaddy River flows southwards on the west side of the basin. The smallest boundary is formed by the Yangtze to the extreme north.
Jaú River (Amazonas) of the Rio Negro.. The Carabinani, which flows north to enter the Jaú River a few kilometres before that river enters the Rio Negro, forms the boundary between the Jaú National Park and the Rio Negro State Park North Section. The last section of the Jaú between the Carabinani and its mouth on the Rio Negro continues the boundary between the two parks. Jaú River (Amazonas) Jaú River () is a river of Amazonas state in north-western Brazil. It is a tributary of the Rio Negro, which itself is a tributary of the Amazon River. The name "Jaú" comes from