NaturaSat computational tools for supporting hydrological modelling in environmental study and control

Wetlands, areas that are permanently or seasonally flooded or saturated with water, are among the most productive and biodiverse ecosystems on the planet. Their conservation, revitalization and health status monitoring require the hydrological modelling. We introduce the novel hydrological modelling tool in the NaturaSat software and show the useful workflows supporting environmental control and informed decisions. The tool is based on numerical solution of the Laplace equation with Dirichlet boundary conditions on a triangular grid using the complementary volume method. We present results for a case study of the Foráš Nature Reserve in Slovakia, in the alluvium of Danube River, demonstrating the practical application of developed methods. By comparing the solution with the Digital Terrain Model we study the waterlogging status of the most important wetland habitats in the area, and complement the results by analysis of Sentinel-1 radar satellite data and Sentinel-2 optical satellite data.