Nera (Danube) basin and it is not navigable. After the filling of the artificial Lake Đerdap, as a result of the Iron Gate I Hydroelectric Power Station which was finished in 1972, the mouth of the river into the Danube was flooded. In order to allow the optimal electricity production, the water level of the Nera at the mouth should not go below , while it must not exceed it if the flooding of the banks is to be avoided. Since the mid-1990s, there are significant problems in fixing the river's level, as the process is costly and complicated. In 2018, representatives
Nera Verzasca Nera Verzasca The Nera Verzasca, also known as the Nera di Verzasca or Verzaschese, is an indigenous breed of black domestic goat from the Valle Verzasca, in the canton of Ticino in southern Switzerland, from which it takes its name. It is raised in that area and in the provinces of Como, Varese and Verbano Cusio Ossola in northern Lombardy, in the north of Italy. In Italy, the Verzaschese is one of the forty-three autochthonous goat breeds of limited distribution for which a herdbook is kept by the Associazione Nazionale della Pastorizia, the Italian national association of sheep- and goat-breeders.