Demolition of a 120-year-old dam in Ukraine, despite the war
The River Perkalava
River Perkalaba is part of the Danube basin and runs through the Verkhovyna National Nature Park which is located in the Ivano-Frankivsk Region, next to the Ukrainian-Romanian borders. River Perkalaba is inhabited by several fish species, including the Brown trout (Salmo trutta), the endangered Danube salmon (Hucho hucho) and the Ukrainian brook lamprey (Eudontomyzon mariae). Terrestrial and semi-aquatic species are also present in the area, like the brown bear (Ursus arctos), the European mink (Mustela lutreola), the otter (Lutra lutra) and various birds. At the end of the 19th century and during the reign of the Austro-Hungarian Empire, the industrial forest harvesting initiated in the Ukrainian part of the Carpathians. Logged splash dams were constructed during that time to raise the water level of the shallow rivers in the region and thus enabling the transportation of timber rafts, from high mountains to the valleys downstream. This practice was used till August 1979, when the last timber raft was transported this way. Since then, all splash dams that had outlived their usefulness remain obsolete to fall in decay. However, many of them oppose significant barriers to fish migration and sediment transportation.