Assessment of the influense of the river pool development on the water quality by means of GIS methods

The mapping of a number of drainage basins of Vologda-Gryazovets and Verkhnesukhonsky visual environments in the Vologda region was carried out with the help of GIS methods. GIS analysis methods enabled to assess the river pool development, for that purpose the picture of terrestrial surface was classified by the method of ISODATA into three classes: wood areas, agricultural areas and The dependence between human-induced impact and the biotic indexes representing the water quality according to the macrozoobenthos communities condition.