GIS modeling of flow landscape and geochemical systems in urban landscapes of Bobruisk

   This article presents the methodology and results of GIS modeling of flow landscape-geochemical systems in the city of Bobruisk using ArcGIS Pro (ArcHydro module).

   The relevance of the study stems from the need to identify migration patterns of chemical elements in an anthropogenically modified urban environment where surface runoff is regulated by utility infrastructure.

   The goal of the study is to identify and map local watersheds within the city as a basis for analyzing flow landscape geochemical systems, identifying, interpreting and predicting anomalies of technogenic substances in urban landscape components.

   The research methodology included processing of digital elevation models (DEM), step-by-step identification of flow directions and accumulation, stream identification, vectorization, manual adjustment of catchment boundaries, linking the resulting polygons to the city's drainage network. Based on GIS modeling results, a map of original naturally conditioned local watersheds in Bobruisk city was created by automatic generation of watershed boundary. This map was integrated with the city drainage network to create a map of current catchment structures. It identified 11 watersheds forming the city landscape-geochemical system.

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