Руслова мережа Львова: зміни за історичний період та сучасний стан

Abstract

The changes in rivers during the 200-years-old history of the development of Lviv and their modern conditions became the object of our researches. It has been found that the transformation of superficial channels to the underground ones began in 1880, and the biggest changes took place in the 1920s and 1970s. Channels were transformed also into the meliorative and drain channels. As of 2016 there is only 18,3 km of Lviv channels left in the natural state in comparison to 82,9 km of general length. 42,1 km of channels were closed underground, and 22,5 km were transformed into meliorative channels. The length of new-created anthropogenic channels is 46,6 km. Natural channels flow through the dismembered hilly upland and are in the green belt lands of the city. In the case of their saving and cultivation, it is possible to create new recreational areas for inhabitants of the city nearby them. Key words: changes in river channels, natural channels, underground anthropogenic channels, superficial anthropogenic channels, meliorative channels, Lviv rivers.