EN
In the paper are shown analysis’ results of bedload transport variability during fl ood fl ow event observed in the Zagożdżonka River. The bedload measurement station, which is provided with bedload trap and instruments for continuous measuring and data recording, is located upstream of Czarna gauge station on research catchment area of Dept. of Hydraulic Engineering and Environmental Recultivation WULS. Based on measurements’ results of the fl ow and bedload transport parameters the correlation formulas (12) and (13) were determined, respectively for rising limb and recession of discharge hydrograph. For determination’s purpose of formulas (12) and (13) the Bagnold’s relationship (3) were used, modifi ed by author to the form (5), in which specifi c bedload discharge depends on specifi c stream power, hydraulic radius for river-channel bottom and median size of bed material.