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http://dx.doi.org/10.9720/kseg.2014.1.91

Analysis of Flow Duration and Estimation of Increased Groundwater Quantity Due to Groundwater Dam Construction  

Kim, Jong-Tae (River Experiment Center, Korea Institute of Construction Technology)
Kim, Gyoo-Bum (K-water Institute, Korea Water Resources Corporation)
Chung, Il-Moon (Hydrology Research Division, Korea Institute of Construction Technology)
Jeong, Gyo-Cheol (Department of Earth and Environmental Sciences, Andong National University)
Publication Information
The Journal of Engineering Geology / v.24, no.1, 2014 , pp. 91-98 More about this Journal
Abstract
This paper aims to calculate the increase in groundwater quantity following groundwater dam construction, and to assess its impact on surface water. In the study area of Osib-cheon, Yeongdeok, we estimated groundwater quantity, groundwater level, and effective porosity, and examined surface water fluctuations with respect to the increased groundwater quantity based on the flow duration. The results reveal that the increased groundwater quantity was at most $91,746m^3$ in the total drainage basin of the groundwater dam, and the reduced groundwater quantity was at most $11,259m^3$ in the lower zone of the groundwater dam. Therefore, the total groundwater resources secured was $80,487m^3$ and the decrease in groundwater quantity was just 12.27% of the amount of increase. There were changes in discharge rate by up to $3.00{\times}10^{-2}m^3/s$, as deduced from an analysis offlow duration as a result of groundwater dam construction. The overall difference between before and after construction of the dam was almost insignificant compared with the previous dam. The present results indicate that dammed groundwater can serve as an alternative water resource with sufficient quantity.
Keywords
Groundwater; Groundwater dam; Effective porosity; Flow duration curve; Alternative water resource;
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Times Cited By KSCI : 2  (Citation Analysis)
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