oa Application of Spatial Analysis and Modeling in Gis in the Implementation of the Water Balance Method in the Hydrogeological Monitoring System

The goal of ecologically balanced water use is to ensure that ecosystems function at a level that is as close to natural as possible. The exploitation of water resources should not be accompanied by the degradation of hydroecosystems above the acceptable minimum level. Today, with the growing need of the population for access to high-quality and stable drinking water, groundwater is increasingly being used for water supply. The problems of water supply and groundwater quality are of strategic importance and require a comprehensive approach. The study of the groundwater system usually involves predicting the state of this system in the future under the influence of natural and anthropogenic factors that form it. The degree of disturbance to the natural groundwater regime depends on many factors, but primarily on the structure of the geofiltration medium, the type of water exchange basin, the depth of underground development, the nature of development and the degree of anthropogenic load. To determine changes in hydrodynamic conditions, it is important to determine the groundwater balance. The modeled water balance using ArcMap tools, namely Darcy Flow, allows to identify and clarify the conditions of groundwater supply and discharge, to draw conclusions about the quantitative relationships between different components of the system’s water balance. To assess the condition of drinking aquifers, especially their quality indicators, it is necessary to rely on monitoring results. The results of the study demonstrate the feasibility of applying balance methods in the hydrogeological monitoring system along with spatial analysis and modeling in GIS to assess and predict the state of drinking aquifers in order to ensure balanced water use.