Abstract
Quality of water bodies is influenced by their ability to self-clean and disperse the existing substances in water originating from
natural or anthropogenic sources. Creating mathematical models, using design software and simulation, in terms of surface water
quality monitoring, are standard design and interpretation of studies necessary for rational management of water resources. And
we must respect the concept of "sustainable development”. In this paper we highlight this by modeling data (terrain, hydrological,
hydraulic, climatic, lithologic, chemical, biochemical) to a stream using Danish software MIKE 11. Knowing the main point
pollution sources and quantities of pollutants are generated simulation was performed at different values of flow and
water velocity, being noticed changes in terms of water quality, evolution and dispersal capabilities river receiving as
effluent from the activities of the people. Using this method of mathematical analysis leads to results that can be used
in a sustainable management of water courses.