ABSTRACT. The landslides of Cheboksary Povolgye and problems of classification of landslide system. The construction of a cascade of hydropower stations on the River Volga caused the radical transformation of the natural and technological conditions and activated geomorphic hazards. Besides, landslide triggering factors are: lithological, stratigraphical, geomorphological, and new factors is increased weight of the banks slopes as new factors of landslides. The results of landslide investigation in Cheboksary Povolgye are presented in the paper. The unified classification of landslides is submitted. At first it includes all their nature types with peculiarities of structure and displacement of landslides body. It based on own features of landslides, which was distinguish by system analyses.
Key words: geomorphic hazards, landslide, slope stability, reservoir banks, classification of the landslides, level of organization of landslides bodies, block, cycle, storey and multistory landslide, landslides taxonomy, structure and mechanism of landslides, cinematic computation model.