ODNAWIALNOŚĆ WÓD PODZIEMNYCH SZCZELINOWO-KRASOWEGO ZBIORNIKA LUBLINIEC-MYSZKÓW W ŚWIETLE BADAŃ MODELOWYCH (z 8 fig.)

Abstract

GROUNDWATER RECHARGE OF KARST-FRACTURED MAJOR AQUIFER LUBLINIEC-MYSZKÓW BY MEANS OF MATHEMATICAL MODELLING (with 8 Figs.)

Abstract. The Lubliniec-Myszków aquifer is situated in Cracow-Silesia monocline within an area of ca. 2100 km². The water-bearing complex is composed of dolomites, limestones and marls of Triassic age with a total thickness of about 10-250 m. Throughout most of the area this is overlain by Upper Triassic and Lower Jurassic formations with a very low permeability. The total amount of water withdrawn from the aquifer is actually about 48 millions m3 per year. In order to recognize main sources of groundwater recharge of the Triassic aquifer a mathematical model of the system was developed using the Modflow computer code. In the model a steady-state groundwater flow was simulated to refine the water balance of the system. The water budget shows that the total renowable groundwater resources of the Triassic aquifer are equal to 39 mm per year (1.2 dm³/skm²). The main source of total renewal is induced leakage of water from shallow aquifer through semipermeable deposits of Upper Triassic formation and it is equal to 25 mm per year. However, this leakage is inhomogeneous over the aquifer and varies from less to 9 mm per year up to 69 mm per year.