Nera (Danube) Nera (Danube) The Nera (, or Нера, ) is a river running through Romania and Serbia. It is a left tributary of the Danube, which it joins near Banatska Palanka. The Nera rises in the Semenic mountains, the easternmost part of the Banat region, south of the city of Reșița, in the Caraș-Severin County of Romania. The river starts at the confluence of headwaters of the Nergana and Nerganița then flows straight to the south from the Piatra Grozbe peak, under which it springs. Reaching the village of Borlovenii Vechi, the Nera turns southwest, flowing between the Semenic and Banat
Mississippi River System Mississippi River System The Mississippi River System, also referred to as the Western Rivers, is a mostly riverine network of the United States which includes the Mississippi River and connecting waterways. The Mississippi River is the largest drainage basin in the United States. In the United States, the Mississippi drains about forty-one percent of the country's rivers. From the perspective of natural geography and hydrology, the system consists of the Mississippi River itself and its numerous natural tributaries and distributaries. The major tributaries are the Arkansas, Illinois, Missouri, Ohio and Red rivers. Given their flow volumes, major Ohio River tributaries