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 river network of the Kaliningrad Region, located in a zone of excessive moisture, is predominantly composed of small watercourses, among which the Prokhladnaya River is one. The river is subject to the full range of anthropogenic impacts typical of the region, the most significant of which is agricultural activity. The river’s chemical runoff exerts a considerable influence on the ecosystem of the Kaliningrad Lagoon. Previous studies of the Prokhladnaya River have been fragmentary ...