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http://dx.doi.org/10.17663/JWR.2019.21.s-1.16

Hydrological and Ecological Alteration of River Dynamics due to Multipurpose Dams  

Cho, Yean-Hwa (Department of Civil Engineering, Joongbu University)
Park, Seo-Yeon (Department of Civil Engineering, Joongbu University)
Na, Jong-Moon (Department of Civil Engineering, Joongbu University)
Kim, Tae-Woong (Department of Civil and Environmental Engineering, Hanyang University)
Lee, Joo-Heon (Department of Civil Engineering, Joongbu University)
Publication Information
Journal of Wetlands Research / v.21, no.spc, 2019 , pp. 16-27 More about this Journal
Abstract
Alteration in the flow regime of rivers are caused by natural climate change and the changes in anthropogenic hydrological environment due to dam construction. These changes in flow regime cause serious changes not only in the fresh water ecosystems of the rivers but also in the physical structures and fish habitats of the streams. In this study, the alteration in the hydrological characteristics of the Gam river basin due to Buhang dam construction and the changes in ecological health condition, water quality, and river cross-section were analyzed. As a result of analysis by indicators of hydrologic alteration (IHA) to quantitatively change the flow regime of Gam river, HA (Hydrologic Alteration) is more than ±1 and various changes have occurred in the river ecosystem after Buhang dam construction. In addition, ecological health condition and water quality showed different response for each element, and in the case of riverbeds and channel cross-sections, the degradation of channel bed was obviously monitored after dam construction. The results of this study are expected to be used as an efficient method for evaluating changes in stream ecosystems caused by stream regime changes.
Keywords
Channel cross section; Flow regime; IHA(Indicator of Hydrologic Alteration); River ecosystem; RVA(Range of Variability Approach);
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Times Cited By KSCI : 2  (Citation Analysis)
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