| Title |
Evaluation of Runoff Prediction from Managed Golf Course using WEPP Watershed Model |
| Authors |
최재완 ( Jae Wan Choi ) ; 신민환 ( Min Hwan Shin ) ; 류지철 ( Ji Chul Ryu ) ; 금동혁 ( Dong Hyuk Kum ) ; 강현우 ( Hyun Woo Kang ) ; 천세억 ( Se Uk Cheon ) ; 신동석 ( Dong Seok Shin ) ; 임경재 ( Kyoung Jae Lim ) |
| Keywords |
Cover degree; Forest; GeoWEPP; Golf course; Runoff |
| Abstract |
It has been known that Golf course could impose negative impacts on water-ecosystem if pollutant-laden runoff is not treated well. It is important to control non-point source and re-use treated wastewater from the golf course to secure water quality of receiving waterbodies. At golf courses, the rainfall-runoff is affected by various practices to manage grasses. In many hydrological modelings, especially in simple rainfall-runoff modeling, effects on runoff of plant growth and cutting are not considered. In the study, the water erosion prediction project (WEPP), capable of simulating plant growth and various management, was evaluated for its runoff prediction from golf course under grass cutting and irrigation. The %Difference, R2 and the NSE for runoff comparisons were 1.15%, 0.93 and 0.92 for calibration, and 18.12%, 0.82 and 0.88 for validation period, respectively. In grass cutting scenario, grass height was managed to be 18~25 mm. The estimated runoff was decreased by 27%. The difference in estimated total runoff was 11.8% depending on irrigation. As shown in this study, if grass management and irrigation are well-controlled, water quality of downstream areas could be obtained. |