Acta Scientiarum Polonorum

Abstract: In the paper is shown a comparison of measurement and calculation results of bedload rate, which ware transported during two flood events (indicated as wave I and II) 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 WAU. In calculation of bedload rate were used formulas of Bagnold’s (3) and author’s (11). By comparison of total measured mass of sediment transport (M_r) with calculated ones: by formula (3) –M_r(B), and by (11) –M_r(A), was found that for wave I obtained M_r(B) = 0,83M_r and M_r(A) = 0,86M_r. For wave II the results of calculation were as follows: M_r(B) = 1,22Mr and Mr(A) = 0,46M_r.