Pavlova Anna N. RussiaSaratovSaratov State University, 83, Astrakhanskaya Str., Saratov, 410012, Russiagis@sgu.ru Author's articles Geoinformational Mapping of Medico-ecological Situation in Large industrial City (by the Example of Balakovo City) Geomodeling of River Basin Based of the Space Data SRTM (as Example of Tereshka River)