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KMID : 1024520140230020193
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Journal of the Environmental Sciences
2014 Volume.23 No. 2 p.193 ~ p.205
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The Case Study of Economic Value Assessment of Spring Rainfall in the Aspect of Water Resources
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Park So-Yeon
Ryoo Kyong-Sik
Kim Jung-Yun
Kim Baek-Jo
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Abstract
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The direct-runoff of South Korea's representative dams (Soyanggang, Chungju, Andong, Daecheong, and Seomjingang)
and precipitation were analyzed mainly with the evenly distributed spring rainfall events across the country for the last five
years. For precipitation, an increasing was presented during the period 2008-2011, but did not continue to increasing 2012.
The average precipitation of the five dams displayed a similar trend. Except for Chungju and Andong Dams, the trend of
runoff was similar to the one shown in the precipitation. Despite the precipitation of 2009 increased, the runoff volume
decreased for Andong and Chungju Dams. In addition, Chungju Dam remarkably showed a bigger runoff volume compared to other dams. As for the Sumjingang Dam, the runoff volume was the smallest, and the difference is as great as over 15-fold when compared to other runoff values. After the result of analyzing the relation between a single runoff event and synoptic weather patterns, pattern 4 contributed to the greatest impact on this event and weather patterns. The total runoff volume of the five dams for spring rain event for the last five years that exhibited this characteristic was estimated at 5.68 billion tons(106m3). Lastly, the value of this estimation was assessed as approximately 273.1 billion KRW.
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KEYWORD
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Water resource, Spring rainfall, Economic value, Precipitation, Direct-runoff
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