Ecological Safety of Coastal and Shelf Zones of Sea Ecological Safety of Coastal and Shelf Zones of Sea 2413-5577 20260203 Original paper Dynamics of the Area and Volume of the Chernorechenskoe Reservoir (Sevastopol) Aleskerova A. A.
Russian Federation
annete08@mail.ru Lishaev P. N.
Russian Federation
Vasilenko N. V.
Russian Federation
Kubryakov A. A.
Russian Federation
Stanichny S. V.
Russian Federation
Grechushnikova M. G.
Russian Federation
Marine Hydrophysical Institute of RAS Sevastopol Russia Lomonosov Moscow State University Moscow Russia 30 06 2026 2026 2 43 56 19 02 2026 04 03 2026 19 03 2026 Copyright © 2026, A. A. Aleskerova, P. N. Lishaev, N. V. Vasilenko, A. A. Kubryakov, S. V. Stanichny, M. G. Grechushnikova 2026 A. A. Aleskerova, P. N. Lishaev, N. V. Vasilenko, A. A. Kubryakov, S. V. Stanichny, M. G. Grechushnikova https://creativecommons.org/licenses/by-nc/4.0/ https://ecological-safety.ru/en/repository/issues/2026/02/03/

The article aims to quantify the dynamics of the area and volume of the Chernorechenskoe Reservoir (the main water supply of Sevastopol). The study relies on a comprehensive analysis of Sentinel-2 optical satellite data (164 images) with a spatial resolution of 10 m for 2015‒2026 to develop and test an automatic algorithm for determining the water surface area, based on a normalized difference water index with adaptive threshold values for different seasons. The obtained water surface areas are integrated with a bathymetric model to calculate the reservoir volume. The obtained results are compared with MERRA-2 precipitation reanalysis data. The minimum values of the reservoir volume were observed in January 2021 (7.4 million m³ with an area of 178.1 hectares) after the low-water year of 2020, and also in September 2025. The maximum volume during the study period did not exceed 45.7 million cubic meters, which is 23% less than the design usable volume. A positive correlation was found between the precipitation amount and reservoir area, taking into account the inertia of the hydrological system. The developed methodology can be used to monitor other reservoirs in the region.

 Chernorechenskoe Reservoir satellite monitoring Sentinel-2 NDWI bathymetry reservoir volume water surface area Crimea This study was conducted under state assignment of MHI RAS FNNN-2024-0012 “Analysis, diagnosis and real-time forecast of the state of hydrophysical and hydrochemical fields of marine water areas based on mathematical modelling using data from remote and in situ methods of measurements”.

About the authors:

Anna A. Aleskerova, Senior Researcher, Marine Hydrophysical Institute of RAS (2 Kapitanskaya St., Sevastopol, 299011, Russia), PhD (Geogr.), ORCID ID: 0000-0003-1451-3440, ResearcherID: F-2966-2017, Scopus Author ID: 57021552600, annete08@mail.ru

Nadezhda V. Vasilenko, Junior Researcher, Marine Hydrophysical Institute of RAS (2 Kapitanskaya St., Sevastopol, 299011, Russia), ResearcherID: JZT-8108-2024, Scopus Author ID: 57358387000, nadinkot.nk@gmail.com

Pavel N. Lishaev, Researcher, Marine Hydrophysical Institute of RAS (2 Kapitanskaya St., Sevastopol, 299011, Russia), PhD (Phys.-Math.), Scopus Author ID: 57193071072, ResearcherID: A-7770-2019, ORCID ID: 0000-0002-5259-3309, pavellish@mail.ru

Arseny A. Kubryakov, Deputy Director for Research, Marine Hydrophysical Institute of RAS (2 Kapitanskaya St., Sevastopol, 299011, Russia), DSc (Phys.-Math.), Scopus Author ID: 37072750100, WoS ResearcherID: F-8921-2014, ORCID ID: 0000-0003-3561-5913, arskubr@yandex.ru

Sergey V. Stanichny, Senior Researcher, Marine Hydrophysical Institute of RAS (2 Kapitanskaya St., Sevastopol, 299011, Russia), PhD (Phys.-Math.), ORCID ID: 0000-0002-1033-5678, ResearcherID: F-8915-2014, Scopus Author ID: 6602344280, sstanichny@mail.ru

Maria G. Grechushnikova, Leading Researcher, Lomonosov Moscow State University, Faculty of Geography (Leninskie Gory, GSP-1, Moscow, 119991, Russia), PhD (Phys.-Math.), ORCID ID: 0000-0001-6376-2473, ResearcherID: L-5317-2013, Scopus Author ID: 6507726807, allavis@mail.ru

Contribution of the authors:

Anna A. Aleskerova – paper concept, formulation of the study goals and objectives, calculations, information collection, data analysis, interpretation of results, writing the paper manuscript, preparation of graphic materials

Pavel N. Lishaev – calculations, data analysis, interpretation of results

Nadezhda V. Vasilenko – analysis of literary sources, information collection, interpretation of results, writing the text of the article, preparation of graphic materials

Arseny A. Kubryakov – scientific supervision of research, interpretation of results

Sergey V. Stanichny – scientific supervision of research, interpretation of results

Maria G. Grechushnikova – field work, bathymetric data collection

All the authors have read and approved the final manuscript.

Article text not included.

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