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
Geography of the Yarra River Geography of the Yarra River The Yarra River is a river in East-Central Victoria, Australia that flows through the city of Melbourne. This article contains explanations and lists of the river's tributaries and other geographic features. The river flows atop layers of silt that built up within an ancient river valley around 10,000-15,000 years ago. The river's major tributaries are the Plenty River, Merri Creek, Darebin Creek, Diamond Creek, Gardiners Creek, Mullum Mullum Creek and the Moonee Ponds Creek. It hosts a wide range of geographic features including; bends, rapids, lakes, islands, floodplains, billabongs, wetlands, etc. Most features have been