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The purpose of this work was to determine the impact of anthropogenic activities, which consisted in the expansion of the national road 51 to change the water relations in the Upper Pas??ka catchment. Hydrological measurements were carried out on the Pas??ka River near the Gry?liny village. Studies have shown that the expansion of road 51 has changed the way the river basin has been developed. The area of agricultural and forested areas decreased in favor of paved and built-up areas, which resulted in an increase ...

The aim of the study was to present of phosphorus and nitrogen migration direction in the flow - through lakes system by mathematical relationships. Mathematical models included the water flow at the inlet and outlet of the lakes, the residence time of lake, the phosphorus and nitrogen concentration in the water and bottom sediment, the size of nutrient release from bottom sediments. The models of P and N retention for lakes of upper Pas??ka indicate that the retention of nutrients in flow - through lakes is prima...

Lake water quality determines the possibility of its using for technical purposes (as a source of drinking or industrial water) and for recreational using (swimming, angling, water sports). In modern times the water quality state is deteriorating because of excessive anthropopressure. The attempts of water quality improvement are taken via technical methods implementation. In order to predict the effects of potential restoration actions the great need exists of the models development, which can help to select the ...