Interpretation of causes of a flash flood in the Olešenský potok brook drainage area

Abstract

The main cause of the so-called flash flood that occurred in the Olešenský potok Brook drainage area on June 10 and 11, 2004, was above all an abnormal rainfall. Human interventions into the natural environment had only a negligible impact on the flood magnitude and thus on the consequent material damages. In the upper and middle part of the basin, where the valley has still maintained its natural character, abnormal erosion and accumulation locally occurred, but this is a part of natural development of a valley