The human activity role in river channel relief forming

Abstract

A huge number of different anthropogenic (man-made) landforms have been created in the valleys and riverbeds, which have transformed their appearance and the nature of erosion-accumulative processes. Major landforms that have a long-term impact on the landscapes of river valleys include large dams, regional multikilometer dikes and main canals. Large forms disturb the longitudinal and transverse connectivity of the river system. This intervention in the relief of river valleys completely transforms it, as well as the direction of the geomorphological processes. There are also smaller-scale landforms that belong to the river relief and play an important role in the river morphology and dynamics due to their wide distribution and indirect consequences they exert. This category of anthropogenic forms covers a wide range of engineering structures and activities that, being exposed to the action of a water flow and interacting with it, develop and transform according to the laws of nature, they can be called natural-anthropogenic forms.