Modelling the pollution load from nonpoint pollution sources

Abstract

The paper presents a new method of modelling the nonpoint pollution sources. The most significant feature of presented model is its ability to calculate pollution load from medium and large-scale river basins of thousands km2 per given balance period in a distributed form of a grid. The solution has been designed as a grid model in the GIS environment. The model has been experimentally applied in river basins with different physicogeographical conditions, land use, and anthropogenic impact. The results proved it to be suitable for calculation of balance values and delimitation of areas marked by critical intensity of pollutants load from the river basin area. Due to its abilities, it can be used for water quality protection planning in river basins and in their environmental management