HYDROMORPHOLOGICAL REGIME AND PROVISION OF NAVIGABLE CONDITIONS ON THE MIDDLE AND LOWER VOLGA, TAKING INTO ACCOUNT CLIMATIC AND ANTHROPOGENIC CHANGES
https://doi.org/10.71367/3034-4638-2026-1-1-58-88
Abstract
The paper presents the results of comprehensive studies of the hydromorphological regime of the Lower Volga at two sites: the tailrace of the Cheboksary HPP and the VolgaCaspian Sea Navigation Canal. For the first time, longterm hydrological and channel observations (from 1877 to the present) are combined with mathematical modeling data. Methods of correlationregression analysis, water level exceedance probability assessment, and comparison of channel survey plans are used. It is established that in the tailrace of the Cheboksary HPP, after 40 years of operation, the intensity of erosion has decreased to 1.1 cm/year, and the correlation of water levels between the gauges “HPP tailrace” and “Kozlovka village” is 0.927, indicating the absence of irreversible water level lowering associated with the development of channel quarries. On the VolgaCaspian Canal, it is shown that the lowering of the Caspian Sea level provokes accelerated transformation of the canal into a river channel with the formation of riffles, side bars, and dune bedforms, leading to increased siltation and necessitating larger dredging volumes. The obtained results are of practical importance for planning dredging operations, optimizing hydropower release regimes, and locating spoil disposal sites.
About the Authors
G. L. Gladkov
Admiral Makarov State University of Maritime and Inland Shipping
Russian Federation
Russian Federation
Gladkov Gennady Leonidovich – Doctor of Technical Sciences, Professor. Head of the Department of Waterways and Water Surveys
5/7 Dvinskaya St., St. Petersburg
P. V. Belyakov
Admiral Makarov State University of Maritime and Inland Shipping
Russian Federation
Russian Federation
Belyakov Pakhom Vitalievich – Candidate of Technical Sciences, Associate Professor of the Department of Waterways and Water Surveys
5/7 Dvinskaya St., St. Petersburg
A. O. Eremeeva
State Hydrological Institute
Russian Federation
Russian Federation
Eremeeva Anna Olegovna – Candidate of Technical Sciences, Senior Researcher
23, 2nd line VO, St. Petersburg
A. N. Sitnov
Volzhsky State University of Water Transport
Russian Federation
Russian Federation
Sitnov Alexander Nikolaevich – Doctor of Technical Sciences, Professor. Head of the Department of Waterways and Hydraulic Structures
Nizhny Novgorod, st. Nesterova, 5a
Yu. E. Voronina
Volzhsky State University of Water Transport
Russian Federation
Russian Federation
Voronina Julia Evgenievna – Candidate of Technical Sciences, Associate Professor of the Department of Waterways and Hydraulic Structures
Nizhny Novgorod, st. Nesterova, 5a
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Review
For citations:
Gladkov G.L., Belyakov P.V., Eremeeva A.O., Sitnov A.N., Voronina Yu.E. HYDROMORPHOLOGICAL REGIME AND PROVISION OF NAVIGABLE CONDITIONS ON THE MIDDLE AND LOWER VOLGA, TAKING INTO ACCOUNT CLIMATIC AND ANTHROPOGENIC CHANGES. Eroziya pochv i ruslovye processy. 2026;(1):58-88. (In Russ.) https://doi.org/10.71367/3034-4638-2026-1-1-58-88
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