Abstract: The problem of global climate change is relevant to the human agenda, not only because of the average annual temperature rise on the planet, but also because of changes in the entire geosystem, rising global oceans, melting ice and permanent glaciers, increasing uneven rainfall, changing river flow regimes and climate instability. other changes involved.The article presents the results of scientific research on hydromodular zoning of irrigated lands of Khorezm oasis and scientifically based irrigation regimes for cotton in the main hydromodular regions of Khorezm oasis and study of soil and hydrogeological conditions of the oasis, new hydromod Inclusion of observation wells for monitoring of groundwater level and mineralization dynamics in ArcGIS program, interpolation of groundwater surface, creation of electronic digital map of soil mechanical composition, hydromodule using raster calculation panel based on groundwater level and soil mechanical composition information on the formation of the zoning layer.