Assessment of the Izhevsk Reservoir Catchment Podborenka and Pazelinka Small Water Quality
Water quality deterioration is a problem for the Izhevsk Reservoir. Biogenic and organic elements entering the Izhevsk Reservoir are nutritive material for phytoplankton and cyanobacteria that are supplied to the water body with industrial waste water, as well as via the water body catchment area. The Podborenka and Pazelinka small rivers' water quality and their influence upon the status of Izhevsk Reservoir as a critically important entity for the major industrial center of the Urals have been studied. Water chemical composition of a number of small rivers of the catchment has been investigated, hydrological characteristics of the water bodies under study have been considered. Maximal value of the pollutants MPC has been found and the rivers' pollution degree in terms of different observation ranges has been given. The most pollution was found in the Podborenka River while the maximal values were observed in the areas impacted by auto highways where the pollution degree was high and very high. Anthropogenic impact upon the small rivers was caused by economic activities both on the catchment territories and at the watercourses proper. Industrial, domestic and rainstorm waste waters, as well as surface runoff caused by atmospheric precipitation are the sources of the small rivers pollution.