Evaluation of flow frequency on streams in the South Moravian Region for the last 40 years

The aim of the mentioned article is to evaluate the flow frequency in selected water gauging stations in the South Moravian Region from the CHMI network over the last 40 years. Use derived series of M-day discharges for evaluation, which are based on the flow duration curves of the time series of mean daily discharges and the corresponding probabilities of exceeding. The series of M-day discharges in the observed profiles will be evaluated for the current reference period 1981–2010 and the newly proposed period 1991–2020. To orientate the trend analysis in the time series, use a mass curve of mean daily discharges. The result will therefore be to describe the changes in flow frequencies between these reference periods. The above-mentioned results and conclusions will serve for practical use in applied hydrology, e.g. as a basis for determining the minimum discharges in water management and other purposes within the provision of standard hydrological data of surface waters according to ČSN 75 1400.