Słowa kluczowe: river erosion, bypasses, flood flow rates, anthropogenically transformed water systems, ice cover, air temperature, cumulated degree-days factor, logistic regression method, the River Noteć, atmospheric precipitation, monthly precipitation sum, linear trend, Japan, Atmospheric circulation, NAO, Warsaw, Eastern Poland, bioclimate assessment index weather, WSI, biothermal-meteorological weather classification, Wałbrzych coal mining area, coal mining, anthropogenic forms, anthropogenic denudation, anthropogenic aggradation