bedload transport, headwater stream, check-dams, flysch, Western Carpathians

As proved our recent research in Beskydian headwater channels, obtained critical values (bed shear stress, unit stream power and unit discharge) for beginning of bedload transport of certain grain diameters were significantly lower than those coming from Alpine and Andine environments. On the other hand, local flysch-based mid-mountain streams contain generally finer sediments when compared to other regions. Simulation of bedload transport in one-dimensional TOMSED model also pointed up on relatively small total amounts of material which can be potentially transported during a single flood event.