Annotation

Purpose: to develop an algorithm for monitoring the erosion state of an area using open remote sensing data based on the example of the Volga River water protection zone and to propose a preliminary variant of nature-based bank protection measure calculation. 

Materials and methods. Calculations were performed and maps of the WRI water index and NDVI vegetation index were created, and a topographic map based on remote sensing data was constructed. In-kind moisture readings in characteristic areas with varying degrees of water saturation were collected, according to the water index map. An HH2 moisture meter was used as a device for determining moisture. A map of the NDVI vegetation index with classified zones by vegetation density verified by in-kind observations was compiled. A preliminary version of the calculation of bank reinforcement is proposed. 

Results and discussion. Hazardous areas of erosion are difficult to identify, especially when various facilities are planned to be built in such areas or nearby. Such an analysis isn’t often included in the standard survey for construction. For this purpose, current open data sources can be used, namely, satellite images of the Earth and 3D relief map data. A topographic map is necessary for determining the slope. A WRI map is used to identify wetter areas (values greater than 0.7), and a vegetation index map, combined with topography, is necessary to assess the degree of forest cover and slope stability. WRI values vary from 0.34 to 1.38, while the vegetation index ranges from 0 to 0.37. Intensive water erosion on the banks of the Volga River in the Konakovsky District of the Russian Federation is characterized by a WRI index greater than 0.7 and a slope of 1:4, while the NDVI approaches 0.076. 

Conclusions. Based on the analysis of calculated and in-kind studies, an algorithm for monitoring erosion areas was developed using the Volga River water protection zone as an example. The variants for anti-erosion riverbank stabilization using gabion structures and the “Green Terramesh” stabilization system were proposed.

doi: 10.31774/2712-9357-2025-15-4-338-352

For quoting

Semenova K. S., Khanov N. V., Kadyseva A. A. Justification of an algorithm for monitoring water protection zone erosion using satellite images and the selection of anti-erosion bank protection measures. Land Reclamation and Hydraulic Engineering. 2025;15(4):338–352. (In Russ.). https://doi.org/10.31774/2712-9357-2025-15-4-338-352.

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