ABSTRACT
Water balance for the bigger inflow of 6 mine districts in Poland was drawn up by the author in years 93–97. The results of the calculations of water inflow from the surface flow after precipitation, from cone of depression and from groundwater renevable resources were described in this article. The inflows from groundwater renevable resources were divided into two parts: inflow coming from the infiltration of precipitation and the groundwater inflow from rivers and lakes. The depth of drainage of these mines and open-pits is maximum about 200 m below ground level. Every drainage center formed an extensive cone of depression on the area of 66–600 km2. Centers was treated as a separate “field laboratory”.
