Synthetic Drought Hydrograph

Droughts are natural disasters with a significant impact on the economy and social life. Prolonged droughts can cause even more damage than floods. The novelty of this work lies in definition synthetic drought hydrograph (SDH) which be derived at each gaging station river network. Based hydrographs (DHs) recorded for selected station, SDH is statistically characterized provides valuable information to water managers regarding available resources during period. following parameters registered (DH) proposed: minimum discharge QDmin, duration DD deficit volume VD. All these depend threshold QT, chosen based either pure hydrological considerations or socio-economic consequences. For same statistical drought, different shapes considered. In addition, varies according probabilities exceedance volume.