Flood Transformation Effect of a System of Small Water Reservoirs

TLAPAK VACLAV, PELIKAN PETR, PILAŘOVA PAVLA. 2015. Flood Transformation Eff ect of a System of Small Water Reservoirs. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 63(5): 1581–1586. The paper resumes the investigation of transformation of watershed fl ow off caused by retention volumes of small water reservoirs (SWR) in landscape. Based on our work experience in the fi eld of water reservoir design and research, we know that simple system of even small fi shponds disposes of nonnegligible free retention volume. We decided to verify this assumption with aid of exact determination of discharge transformation within the basin containing realized system of small water reservoirs. The input water management data for design of water reservoirs are represented by water discharge in existing stream related to the point of designed SWR. In the Czech Republic, the data are provided by the Czech Hydrometeorological Institute (CHMI), however the data refer to an unaff ected discharges, i.e. without consideration of transformation eff ects of existing small water reservoirs within the basin. Although the total available volume for transformation purposes of investigated SWR system is relatively small, the results show the transformation eff ect of such reservoirs is not insignifi cant. Furthermore the transformation eff ect is raised by proper design and functionality of the whole system of water reservoirs.