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Membrane Water Treatment Volume 10, Number 1, January 2019 , pages 083-89 DOI: https://doi.org/10.12989/mwt.2019.10.1.083 |
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Effect of interflow and baseflow on nutrient runoff characteristics in agricultural area |
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Yunhee Lee and Seong-Wook Oa
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| Abstract | ||
| The most common way of reducing non-point source pollutants from agricultural areas is the installation of reservoirs. However, this method is only effective for surface runoff of settleable pollutants. This study was conducted to estimate the effect of interflow, baseflow, and surface runoff on pollutant runoff in a small agricultural catchment. Runoff of organic matters, SS, and T-P were directly proportional to the rainfall variation, while ammonia and nitrate were inversely proportional to the amount of rainfall. The interflow and baseflow was only 46% of the total stream flow, but the nitrate load reached 78%. The interflow as a nutrient transport pathway should be considered for managing a stream water quality. It requires careful attention and appropriate control methodology such as vegetation to consider the influence by interflow. The reservoir as a dry extended detention pond (DEDP) has function of nutrient captor. | ||
| Key Words | ||
| baseflow; surface runoff; interflow; livestock manure; non-point source | ||
| Address | ||
| Yunhee Lee: Daejeon Sejong Research Institute, 85 Jungang-ro, Jung-gu, Daejeon 34863, Republic of Korea Seong-Wook Oa: Department of Railroad Civil System, Woosong University, 171 Dongdaejeon-ro, Dong-gu, Daejeon 34606, Republic of Korea | ||
