Determining the shape and volume of the post-mining basin in Kadzielnia area, Kielce

Long-term exploitation of limestone in Kadzielnia in the centre of Kielce created the post-mining basin of considerable size. For some time it was filled with water, forming the lake Szmaragdowe (Emerald Lake), which dried out 30 years ago. Because of the restoration projects of the lake it became necessary to determine its volume; the data on the size of the basin have not so far been presented in publications. This volume was determined using modern measurement technologies: in the part filled with water – bathymetric measurement, in the dry part – scanning tacheometry. As a result of measurements and calculations, volumes of the part filled with water (23.000 m³) and of the dry part (277.000 m³) were determined. The spatial model of the basin and topographic maps were also created.