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http://dx.doi.org/10.17663/JWR.2018.20.4.353

On Utilization of Inactive Storage in Dam during Drought Period  

Joo, Hongjun (Department of Civil Engineering, Inha University)
Kim, Deokhwan (Water Resources Systems Research Institute, Inha University)
Kim, Jungwook (Department of Civil Engineering, Inha University)
Bae, Younghye (Department of Civil Engineering, Inha University)
Kim, Hung Soo (Department of Civil Engineering, Inha University)
Publication Information
Journal of Wetlands Research / v.20, no.4, 2018 , pp. 353-362 More about this Journal
Abstract
The purpose of this study is to suggest a structure plan for improving the utilization of inactive storage in the dam for overcoming the drought. Inactive storage in the dam is composed of the emergency storage and dead storage. The emergency storage can be used for the case of emergency such as drought. But, in general, the dead storage for sedimentation is not used even for the emergency. Therefore, this study considers the part of dead storage that the sedimentation is not progressed yet can be used during the severe drought period and is called "drought storage in a dam". The accurate Sediment Level(SL) analysis for the computation of the drought storage should be performed and so the present and future SL in the dam reservoir is estimated using SED-2D linked with RMA-2 model of SMS. After the consideration of additionally available storage capacity based on the estimated SL, the drought storage is finally determined. Present data based on historical data, future predicted future climate factors by Representative Concentrarion Pathways(RCP) 8.5 scenario. Then, using the TANK model, dam inflows were determined, and future period such as SL and drought storage were suggested. As the results, we have found that the available drought storage will be reduced in the future when we compare the present drought storage with the future one. This is due to a increase variability of climate change. Therefore, we should take the necessary study for the increase of available drought storage in the future.
Keywords
Inactive storage; Drought storage; Sedimentation level; RMA-2 & SED-2D model; RCP; TANK model;
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Times Cited By KSCI : 5  (Citation Analysis)
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