Inventory taking of the upper water reservoir in pumped-storage power station in Żydowo using classical land survey methods and integrated hydroacoustic and global navigation satellite systems (GNSS)

The article presents the results of land survey and hydrographical works completed on Lake Kamienne - the upper water reservoir of the Pumped-Storage Power Station in Żydowo. The power plant with the capacity of 150 MW built in 1960 uses the difference in water level between Lake Kamienne and Lake Kwiecko of ca. 80 m. The detailed inventory of a part of the coastline was taken using the classical land survey techniques (Total Station), while for the remaining part it was taken using the GPS/EGNOS Thales Mobile Mapper satellite navigation receiver. The bathymetric measurements of the lake were carried out on the bases of GPS/RTK satellite positioning using the Ashtech X-Treme receiver while hydroacoustic sounding was conducted using the Simrad EA501P hydroacoustic system. The article describes the individual stages of the work and methods for raw land survey and hydrographical data processing. Development of the digital bathymetric chart, digital elevation model of the battom and the visualization of Lake Kamienne were the final effects of the work.