| Title |
Re-establishing the Antecedent Moisture Condition of NRCS-CN Method Considering Rainfall-Runoff Characteristics in Watershed Based on Antecedent 5-Day Rainfall |
| Authors |
유지영(Yoo, Ji-Young) ; 문건우(Moon, Geon-Woo) ; 안재현(Ahn, Jae-Hyun) ; 김태웅(Kim, Tae-Woong) |
| DOI |
https://doi.org/10.12652/Ksce.2014.34.3.0849 |
| Keywords |
선행토양함수조건;선행5일강수량;직접유출량;NRCS-CN 방법 Antecedent moisture condition;Antecedent 5-day rainfall;Direct runoff;NRCS-CN method |
| Abstract |
Streamflow responses to irrigation reservoirs and groundwater withdrawals were simulated using the integrated surface-water and groundwater model, SWAT-MODFLOW for the upstream watershed of the Gongdo station located in the Anseong stream. The simulated results indicated that the irrigation water supply from the Gosam and the Geumkwang reservoirs has caused the decrease of 31.2%, 82.5% in drought flows below the reservoirs, respectively, against the natural flow condition. While, at the outlet of the study watershed, the effects of the irrigation reservoirs were insignificant due to the delayed return flows with the decrease of 5.7% in drought flow. Both of the irrigation reservoirs and groundwater withdrawals have reduced the drought flows by 19.2% at the Gongdo station. |