Abstract This study is to assess the hydrological drought in South Korea in a semi-distributed form using an equation modifying the SWSI (Surface Water Supply Index). Based on the nationwide gauging stations of 61 precipitation, 53 streamflow, 7 dam inflow and 31 groundwater level, South Korea was divided into 32 (sub-regions) and 112 (accounting units) watersheds. The evaluation result was compared with the historical drought records of 2001 which is the driest year in history. The results showed that the monthly-based SWSI value of the 112 watersheds division gives a more reliable representation than that of the 32 watersheds division. In addition, the weekly-based SWSI evaluation accurately showed the continual drought condition while the monthly-based evaluation failed to catch the drought within a month.


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    Title :

    Assessment of distributed hydrological drought based on hydrological unit map using SWSI drought index in South Korea


    Contributors:

    Published in:

    Publication date :

    2010-10-28


    Size :

    7 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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