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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 (2,087.9 km²), 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 (R2) of 0.70 and validated at KH with R2 of 0.60. The drainage-area ratio method showed R2 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.
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참고문헌 (12)
참고문헌 신청
Abdulla, A. F. / 1997 / Development of regional parameter estimation equations for macroscale hydrologic model / Journal of Hydrology 197 : 230 ~ 257
Arnold, J. G. / 1998 / Large area hydrologic modeling and assessment part I: model development / Journal of American Water Resources Association 34 (1) : 73 ~ 89
Chow, V. T. / 1964 / Handbook of Applied Hydrology / McGraw-Hill
Hirsch, R. M. / 1979 / An evaluation of some record reconstruction techniques / Water Resources Research 15 (6) : 1781 ~ 1790
Lee, J. H. / 1999 / The development of design low-flow estimation model at the ungaged mountainous watershed / Journal of the Korean Society of Civil Engineers 19 : 169 ~ 181
Arnold, J. G. / 1998 / Large area hydrologic modeling and assessment part I: model development / Journal of American Water Resources Association 34 (1) : 73 ~ 89
Chow, V. T. / 1964 / Handbook of Applied Hydrology / McGraw-Hill
Hirsch, R. M. / 1979 / An evaluation of some record reconstruction techniques / Water Resources Research 15 (6) : 1781 ~ 1790
Lee, J. H. / 1999 / The development of design low-flow estimation model at the ungaged mountainous watershed / Journal of the Korean Society of Civil Engineers 19 : 169 ~ 181
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