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http://dx.doi.org/10.3741/JKWRA.2013.46.12.1169

Estimation of Natural Streamflow for the Bokhacheon Middle-upper Watershed  

Kim, Nam Won (Water Resources Research Division, Water Resources & Environment Research Department, Korea Institute of Construction Technology)
Lee, Jeongwoo (Water Resources Research Division, Water Resources & Environment Research Department, Korea Institute of Construction Technology)
Lee, Jeong Eun (Water Resources Research Division, Water Resources & Environment Research Department, Korea Institute of Construction Technology)
Publication Information
Journal of Korea Water Resources Association / v.46, no.12, 2013 , pp. 1169-1180 More about this Journal
Abstract
The objectives of this study are to construct the natural streamflow in the Bokhacheon middle-upper watershed using the SWAT-K model and to assess the impacts of groundwater withdrawals, water intake, treated sewage water release on streamflow. The simulated natural streamflow from 2006 to 2013 showed the minimum discharge of $1.7m^3/s$, the annual average discharge of $26.2m^3/s$, the drought flow of $2.0m^3/s$ at the outlet of the study area. The simulated results indicated that the groundwater pumping has induced the decrease of 34% in drought flow against the natural condition and the net water release has caused the increase of 15%, while the combined effects of the groundwater pumping and the net water release have induced the decrease of 19%. It was found out from the simulated natural streamflow data that the specific discharges of the abundant flow, normal flow, low flow, drought flow in the upper-middle channels of the Bokha-cheon watershed have a tendency to increase as the drainage area increases, but the specific discharges showed almost constant values at any downstream point with drainage area more than about 180 $km^2$.
Keywords
SWAT-K; natural flow; groundwater pumping; water intake; treated sewage water release;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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