| Title |
A Study of Total Nitrogen Pollutant Load through Baseflow Analysis at the Watershed |
| Authors |
최윤호 ( Youn Ho Choi ) ; 금동혁 ( Dong Huyk Kum ) ; 류지철 ( Ji Chul Ryu ) ; 정영훈 ( Young Hun Jung ) ; 김용석 ( Yong Seok Kim ) ; 전지홍 ( Ji Hong Jeon ) ; 김기성 ( Ki Sung Kim ) ; 임경재 ( Kyoung Jae Lim ) |
| DOI |
https://doi.org/10.15681/KSWE.2015.31.1.55 |
| Keywords |
Baseflow; Non-Point Source; TN (Total Nitrogen) Pollutant Loads; WAPLE |
| Abstract |
It has been well known that it is not easy to quantify pollutant loads driven by non-point source pollution due to various factors affecting generation and transport mechanism of it. Especially pollutant loads through baseflow have been investigated by limited number of researchers. Thus in this study, the Web-based WAPLE (WHAT-Pollutant Load Estimation) system was developed and applied at study watersheds to quantify baseflow contribution of pollutant. In YbB watershed, baseflow contribution with WWTP discharge is responsible for 49.5% of total pollutant loads at the watershed. Among these, pollutant loads through baseflow (excluding any WWTP discharge) is responsible for 61.7% of it. In GbA watershed, it was found that 58.4% is contributed by baseflow with WWTP discharge 2.9% and 97.1% is by baseflow. For NbB watershed (without WWTP discharge), 52.3% of pollutant load is transported through baseflow. As shown in this study, it was found that over 50.0% of TN (Total Nitrogen) pollutant loads are contributed by non-direct runoff. Thus pollutant loads contributed by baseflow and WWTP discharge as well as direct runoff contribution should be quantified to develop and implement watershed-specific Best Management Practices during dry period. |