Web mapping of surface water quality in Lviv

The ecological condition of surface waters of Lviv region is influenced by various related factors: soil pollution, atmosphere, changes in landscape structure and man-made congestion, inefficient operation of sewage and treatment facilities, especially in settlements, pollution and littering of rivers with household and other waste, forest skidding along streams in the mountains. Ensuring balanced, ecologically safe development of the region is possible only with an understanding of the functioning of natural and anthropogenic complexes within it. Another important problem that leads to surface water pollution in the region is the lack of water protection zones and coastal protection zones in the region. Lack of cartographic materials and uncertainty of the boundaries of water protection zones and coastal protection strips lead to violations of land and water legislation in their use. Currently, the condition of water bodies in the Lviv region, in particular in the city of Lviv, is at an unsatisfactory level. The main problems in this area are the progressive nature of the negative impact on the environment and human health. As there is currently no cartographic material that would visualize the problem of surface water quality in Lviv, the main purpose of this work was to create a web map of surface water pollution in the city. To achieve this goal, we collected and systematized geospatial statistical cartographic materials on the ecological condition of the surface city of Lviv. The necessary software for the development of such a web map has been identified. An algorithm for loading geospatial data into the created web resource has been developed. Thus, a web map of surface water pollution in Lviv was developed in the ArcGIS Online software environment.