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Resources, regime and quality of surface waters in the Ob River basin: history, current state and problems of research. International Journal of Environmental Studies , 2015, no. 3, pp. 386–396. DOI: 10.1080/00207233.2015.1019299. Received: 14 March 2016. Beysembaeva M.A. et al. / Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering. 2016. V. 327. 4. 35–43 43 Information about the authors Manira A. Beysembaeva, postgraduate student, Tomsk State University. Larissa I. Dubrovskaya, Cand. Sc., Associate Professor of the Department of Hydrology, Tomsk State University. Valery A. Zemtsov, Dr. Sc., Head of the Department of Hydrology, Tomsk State University.