Abstract

The results of field studies on the Baksan (Northern Caucasia) serve as an example of bed deformations at three sections of this mountain river, which are influenced by debris flow. There are big sections on the valley floor’s terrain, which are formed by silts of debris flow. The period between debris flow is characterized by processing of bottom erosion, sedimentation on point bars and braid bars, and, with that, growth of flooded marks on the valley bottom. These processes pass at the speed of 0.2-1.5m per year. The growth of marks on the above-water forms of channel relief is followed by their weediness and formation of flood-plane.

Keywords: channel processes, mountain rivers, debris flow