The preliminary list of micro- and macro- algal taxa is provided for the part Izh river drainage basin included in Izhevsk city area, which first taxonomical this territory. includes 73 species-level from 6 divisions. Fragilariaceae Bacillariaceae families are most numerous terms number species represented, belonging to Bacillariophyceae class. presence Hydrodictyon reticulatum , a Red Book Udm...