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Water Shortage Estimation by Drought Frequencies in National Water Plan

Moon, Jang Won 1 Lee, Dongryul 1 Sijung Choi 1

1한국건설기술연구원

Accredited

ABSTRACT

Water shortage estimation by drought frequencies is an important factor for establishment of efficient water resources development and management planning. However, the research on the method to estimate water shortage by drought frequencies based on water supply and demand is not enough and it is necessary to establish a methodical approach. In this research, the way to estimate the water shortage based on drought frequency in the process of national water plan is studied. Firstly, the effect of water supply capacity of agricultural reservoir on water shortage is analyzed in the frequency of droughts over 20 years. In addition, the way to calculate water shortage based on drought frequency for each sub-watershed is examined. As a result, water shortage has increased if water supply capacity of agricultural reservoir is not considered and this can be mostly observed in Geum River basin. Also, it is confirmed that improvements of the existing method for estimating the water shortage of national water plan is required. The results of this study can be used as useful information for water resources planning and management of the central and local governments in the future.

Citation status

* References for papers published after 2023 are currently being built.