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http://dx.doi.org/10.5389/KSAE.2012.54.6.169

Estimation of Upstream Ungauged Watershed Streamflow using Downstream Discharge Data  

Jung, Young Hun (유량조사사업단 유량조사실 낙동강유량그룹)
Jung, Chung Gil (건국대학교 사회환경시스템공학과)
Jung, Sung Won (유량조사사업단)
Park, Jong Yoon (유량조사사업단 유량조사실 낙동강유량그룹)
Kim, Seong Joon (유량조사사업단 유량조사실 낙동강유량그룹)
Publication Information
Journal of The Korean Society of Agricultural Engineers / v.54, no.6, 2012 , pp. 169-176 More about this Journal
Abstract
This study describes the estimation of upstream ungauged watershed streamflow using downstream discharge data. For downstream Dongchon (DC) and upstream Kumho (KH) water level stations in Kumho river basin ($2,087.9km^2$), three methods of Soil and Water Assessment Tool (SWAT) modeling, drainage-area ratio method and regional regression equation were evaluated. The SWAT was calibrated at DC with the determination coefficient ($R^2$) of 0.70 and validated at KH with $R^2$ of 0.60. The drainage-area ratio method showed $R^2$ of 0.93. For the regional regression, the watershed area, average slope, and stream length were used as variables. Using the derived equation at DC, the KH could estimate the flow with maximum 41.2 % error for the observed streamflow.
Keywords
Ungauged watershed; drainage-area ratio method; regional regression methods; SWAT;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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