. . "Kr\u00E1sa, Josef" . "Discharge regime assessment for purposes of reservoir sediment trap efficiency estimation" . "RIV/68407700:21110/11:00191652" . . . "Discharge regime assessment for purposes of reservoir sediment trap efficiency estimation"@en . "[B83BF2F802F7]" . "David, V\u00E1clav" . . "Discharge regime assessment for purposes of reservoir sediment trap efficiency estimation" . . "P(QI102A265)" . . . "194782" . "Discharge regime assessment for purposes of reservoir sediment trap efficiency estimation"@en . . "2"^^ . . . "soil loss; sediment transport; WATEM/SEDEM; euthropication"@en . . . "21110" . "Proportion of sediment trapped in reservoirs is expressed by Trap Efficiency (TE). Brune (1944) introduced the methodology based on statistic evaluation of data from high number of reservoirs. Trap efficiency is expressed graphically and as an input Capacity inflow ratio is considered. This variable is a ratio between reservoir storage volume and mean annual discharge. Dendy (1978) added more reservoirs and developed analytical expression of the method. The problem with calculation of sediment trap in reservoirs over large catchments is a lack of input data. Both storage volume of reservoirs and mean annual discharge are usually available only for small portion of the total number of reservoirs in conditions of the Czech Republic. In this paper, the methodology on deriving mean annual discharge in small streams is presented. Using the map of specific runoff values is the typical way of determining runoffs in upper catchments. Unfortunately, detailed map is not available in the Czech Republic. Possibilities for deriving the map from existing data were tested (Mean annual discharge values for selected profiles are the only accessible data). The proposed methodologies were tested within a case study of the \u0158\u00EDmov water reservoir basin (500 km sq) located in South Bohemia. Two different approaches were tested for purpose of specific runoff deriving. Both can then be used for calculation of mean annual discharges in the reservoirs' profiles within the catchment. The former approach consisted in balanced computation of specific runoff values while the latter approach consisted in non-balanced method. In principle, both approaches are different in calculation of specific runoff in intercatchments. Mean annual discharge in upper profiles is considered when calculating specific runoff in intercatchments using the balanced method. In the non-balanced method it is omitted." . . . "Proportion of sediment trapped in reservoirs is expressed by Trap Efficiency (TE). Brune (1944) introduced the methodology based on statistic evaluation of data from high number of reservoirs. Trap efficiency is expressed graphically and as an input Capacity inflow ratio is considered. This variable is a ratio between reservoir storage volume and mean annual discharge. Dendy (1978) added more reservoirs and developed analytical expression of the method. The problem with calculation of sediment trap in reservoirs over large catchments is a lack of input data. Both storage volume of reservoirs and mean annual discharge are usually available only for small portion of the total number of reservoirs in conditions of the Czech Republic. In this paper, the methodology on deriving mean annual discharge in small streams is presented. Using the map of specific runoff values is the typical way of determining runoffs in upper catchments. Unfortunately, detailed map is not available in the Czech Republic. Possibilities for deriving the map from existing data were tested (Mean annual discharge values for selected profiles are the only accessible data). The proposed methodologies were tested within a case study of the \u0158\u00EDmov water reservoir basin (500 km sq) located in South Bohemia. Two different approaches were tested for purpose of specific runoff deriving. Both can then be used for calculation of mean annual discharges in the reservoirs' profiles within the catchment. The former approach consisted in balanced computation of specific runoff values while the latter approach consisted in non-balanced method. In principle, both approaches are different in calculation of specific runoff in intercatchments. Mean annual discharge in upper profiles is considered when calculating specific runoff in intercatchments using the balanced method. In the non-balanced method it is omitted."@en . . "RIV/68407700:21110/11:00191652!RIV12-MZE-21110___" . . "2"^^ . .