Vertical hydrological and hydrochemical structure of the river basin and the features of the functioning of its elements (vegetation, surface, vadose zone and the saturated zone). Spatiotemporal analysis of the water balance elements, simulation series of their average values. Estimation of linkage and relationships between the elements of the water balance during different water content years. Automation of the construction of maps of various water balance indicators. Hydrochemical and new methods of evaluation of the state of water resources. Study of negative hydro processes and determination of allowable impact on river catchments.
Dolgov S., Koronkevich N., Hydrological structure of the landscape and its planning // Actual problems of landscape planning. Proceedings of the Russian Scientific and Practical Conference. Moscow, Moscow University Publishing House, 2011. P. 33-37.
Dolgov S. The role of spatial and vertical heterogeneity of watersheds in the state of water quality // Collection of scientific works of the XIV Congress of Russian Geogr. Society, December 11-14, 2010, St. Petersburg, Volume IV, Part 3. P. 353-360. Electronic version (CD)
Dolgov S., Koronkevich N. Hydrological layering of the flat territory // Proceedings of the Academy of Sciences. Geographical Series. 2010. Number 1. P. 7-25.
Dolgov S. Vertical heterogeneity of the river basin and the spatiotemporal variability of the streamflow in European Russia / / Geographical and environmental aspects of hydrology. Proceedings of the scientific session dedicated to the 90th anniversary of the Department of Land Hydrology Department of Geography and Geoecology, St. Petersburg State University. St. Petersburg, 26-27 March 2008 St. Petersburg.: Publisher State University, 2010. 235. P.113-116
Dolgov S., Koronkevich N. Alti-spatial and spatiotemporal analysis of the water balance of the European part of Russia / / Waters. Resources. 2010. T. 37. Number 2. P. 134-149.
Dolgov S., Koronkevich N. Shmakin A. Interrelation of the elements of the water balance of the European part of Russia during the years of different water and moisture content // Extreme hydrological situations. MA, Media-Press, 2010. P. 136-162.
Dolgov S., Shaporenko S., Sentsova N. The current state of water resources in the Rostov region / / Arid Ecosystems. 2010. T. 16. № 4 (44). P.49-62
Koronkevich N. Georgiadi A., Jasinski S., Milyukov I., Dolgov S., Barabanova E., Zaitseva, I., Kashutina E. From landscape and hydrological estimations of the past and present state and changes in the elements of the water balance to scenario calculations of the change in water resources of large river basins of Russia in the XXI century. // Safety problems in the water sector of Russia. Krasnodar LLC "Vanguard Plus", 2010. P. 141-152.
Dolgov S. The vertical ordering of the river basin and long-term runoff fluctuations // Water Resources of the Volga: the present and the future, the problems of management. Russian Scientific and Practical Conference. October 3-5, 2007, Astrakhan, Astrakhan University, 2007. P. 81-85.
Koronkevich N. Dolgov S., Zonn S. etc. Antropogenic impact on the watersheds of the south of European Russia and its current trends // Earth Sciences. Bibliography. Publications after RFFI projects completed in 2004, Part 2. Scientific World. 2006. pp. 350-351.