ASSESSING WATER POLLUTION BASED ON SPECTRAL INDEXES

The study describes the primary pollutants of water resources in Ukraine and methods for assessing the degree of pollution using satellite monitoring. Satellite data allows to quickly obtain data with high spatial resolution and large spatial coverage for hard-to-reach areas of the Earth's surface. An essential aspect of satellite monitoring is the ability to obtain information on changes in surface waters based on the analysis of their pollution. Multi-temporal data, including archival data, makes it possible to assess the state of water bodies over several years. Multispectral images from the Sentinel-2 satellite are proposed as the primary data set, whose spectral characteristics allow for obtaining a wide range of information. Examples of the application of a remote sensing approach to assess the degree of pollution of water bodies over large areas are analyzed. Promising methods for further research to solve applied problems are pointed out.