Abstract
AbstractThis chapter aims to investigate hydrological drought events using streamflow drought index. The quantification of drought and wet events is an important process for water resources engineering and planning. There are different indices available for regional quantification of hydrological drought and wet conditions, depending on the type of data accessible. In this study, hydrological drought and wet conditions were analyzed using streamflow drought index (SDI) at Naula and Kedar stations located in upper Ramganga River catchment, Uttarakhand, India. The SDI was computed for different scales including SDI-1, SDI-3, SDI-6, SDI-9, SDI-12, and SDI-24 months. Monthly streamflow data over 33 years (1975–2007) were used for building the modeling procedure. Results indicated that there are 70% and 69% chances normal condition experience at Naula and Kedar stations, respectively. The occurrences of severe and extreme drought or wet events were unlikely in both stations, except SDI-24 (extreme drought) at Kedar station. The chances of occurrence for moderate drought and wet conditions were relatively more frequent in both stations. Hence, the efforts must be made to harvest the excess water during the wet periods and utilize the same during the periods of drought for drinking, household activities, and irrigation, etc., in the study region.KeywordsHydrological droughtUsing streamflow drought indexCatchment sustainabilityRamganga River catchmentUttarakhand
Published Version
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