Nera (Danube) of Romania and Serbia signed an agreement to solve the problem. In Romania: Prigor, Bozovici, Dalboșeț, Șopotu Nou, Sasca Montană, Naidăș, Socol In Serbia: Kusić, Bela Crkva, Vračev Gaj, Banatska Palanka, Stara Palanka The following are tributaries of the Nera: Left: Nerganița, Prigor, Rudăria, Bănia, Valea Mare, Șopotu, Bârzu, Boinița, Răchita, Haimeliug, Șușara, Micoș Right: Nergana, Coșava, Hielișag, Ciurezu, Miniș, Agriș, Lăpușnicu, Moceriș, Ducin, Bresnic, Valea Rea, Beu 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
Enns (river) the Northern Limestone Alps and the Central Eastern Alps on an eastern trajectory through Styria, where it passes the Dachstein group at its southern side. Between Admont and Hieflau, it takes a turn to the North and passes through the Gesäuse, a gorge of a length of , where it penetrates the limestone of the Ennstaler Alpen. Flowing to the north from there on, it reaches the state of Upper Austria at the mouth of the Laußabach. North of Steyr, it forms the border between Upper Austria and Lower Austria (formerly also known as "Austria above the Enns" and "Austria