Spatial differentiation of chemical pollution and water quality of the Prokhladnaya River in the Kaliningrad region based on research results in the spring season of the 2025 hydrological year
... the spatial differentiation of chemical pollution and to assess the water quality of the Prokhladnaya River on the basis of chemical analyses of water samples collected during the spring hydrological season of 2025. The calculation of the integrated Water Pollution Index demonstrated that water quality varies from the “clean” to the “polluted” category. Polluted waters were recorded in the upper reaches of the river, where oxygen deficiency and exceedances of the standards for chemical oxygen demand, ammonium,...
