INVESTIGATION OF LAND COVER AND LAND USE CHANGE IN ALIBEYKOY BASIN WITH REMOTE SENSING METHODSAlibeyköy basin is one of the 8 important basins that supply water to Istanbul. In this study, the changes in the land cover and land use of the Alibeyköy Basin located in the Alibeyköy district of Eyüpsultan district of Istanbul between 2002, 2010 and 2022 were determined by using remote sensing (UA) techniques and geographic information systems (GIS). For this purpose, firstly, the classification process was carried out and the land cover and land use classes of the study area were determined. In the continuation of the study, Normalized Difference Vegetation Index (NDVI) and Normalized Difference Built-in Index (NDBI) were calculated over satellite images. The results obtained were compared with the classification results of 2002, 2010 and 2022. In the study, Landsat 5 TM for 2002 and 2010 and Landsat 8 OLI for 2022 satellite images were used. The land cover and land use classes of the Alıbeykoy Basin were determined according to the CORINE system. Land cover and land use classes are in 4 classes: forest and semi-natural areas, water bodies, artificial surfaces, and agricultural areas. As a result of the analysis, it was determined that artificial surfaces increased, forest and semi-natural areas and agricultural areas decreased. The reason for the increase in artificial surfaces is thought to be the Istanbul Airport, which was opened in 2018 in the region. It is seen that the changes in and around the Alibeyköy Basin, which is of great importance in the region, can be easily detected by Remote Sensing methods.