Abstract. Unregulated anthropogenic pressure on rivers is a widespread phenomenon. The ecological state of the river basin is undergoing significant changes due to the emergence of new agricultural land in the river basin. The relevance of identifying illegal development is extremely high. This study is devoted to the identification of objects of illegal construction of agricultural land on satellite images using remote sensing data, processed with the help of software implemented in the program Visual Studio C#. The features of the program created by the author for tracking new objects in the waters of the Siverskyi Donets River are considered. The processed satellite images and their probability estimates of some areas of the Siversky Donets River basin are presented. The results allow remote sensing data to locate illegal development and assess misuse of land in the river basin.