The article deals with the mechanisms, mutual influence, succession of erosion-landslide interaction in the local shore geo-system in the context of water-level fluctuations of the Bratsk Reservoir in the system approach. Comparative analysis of cartographic models investigated dynamics of area that is affected by landslide-erosion processes over the period of 2003 through 2007. On the basis of comparison of the data with the level regime and major process triggering factors, the current study proposes a two-staged model, reflecting succession of process interaction in the local geo-systems at changing level marks.