Water quality monitoring causes for identifying the number of discharged aqueous waters and contained contaminants. Based on data of dirty discharge by using mathematical formulas the anthropogenic impact on the watercourse of Oka basin within Moscow Region was estimated. According to the obtained data the condition of the river basin is characterized as satisfactory. From all the tributaries of the Oka basin, the Moskva River has a very high anthropogenic loading, which is confirmed by the methods of estimation.

anthropogenic loading, river basin, aqueous water, pollutant, ecology condition, desirable function