Absract

The research in the watershed of the Selenga river and its delta are resulted. The reasons of the channel structure change are considered. Tendencies of erosion activity of streams and scheduled deformations in the delta are revealed. The analysis of water drain distribution and accumulated drift character in the channel network subsequent to the results of natural measurements and available data is lead.

Keyword: channel network, dynamics of the river system, accumulated drifts, lateral erosion, scheduled deformation, flow distribution, stream flow formation, granulometric structure of bottom sediments