The strategic objective of the Project is to improve the ecological status of the waters of the river Wisłoki and its main tributaries: Oil and Jasiolka by removing migratory barriers for aquatic organisms. The project is implemented in the Wisłoki basin, in the Lesser Poland and Podkarpackie voivodships, but its impact is much greater by opening migration routes in the Vistula basin. The project is planned to reconstruct/modernise on 9 transverse buildings on the river Wisłoce and its main tributaries: Oil and Jasiołce.