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Sediment Control Practices in Sloping Alpine Fields in Korea

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  21st Century Watershed Technology: Improving Water Quality and Environment Conference Proceedings, 21-24 February 2010, Universidad EARTH, Costa Rica  701P0210cd.(doi:10.13031/2013.29408)
Authors:   Joongdae Choi, Dong-Su Kong, Hyung-Jin Lee, Su-Young Park, Cheol-Hee Won, Yonghun Choi, Kyong-Jae Lim
Keywords:   Muddy runoff, sediment control, sloping field, BMPs, water quality

Soil erosion and muddy runoff from sloping alpine agricultural fields located at the uppermost of major river systems in Korea have caused serious water quality problems in providing domestic water supply and maintaining river ecosystem. The government designated the upper Soyang dam watershed as a priority NPS management region in the middle of 2007 and began to introduce various BMPs extensively to reduce soil erosion, muddy runoff and other NPS pollution discharges. Soil, crop, agricultural management practices and rainfall characteristics of the watershed were explained. Typical BMPs introduced were VFS, vegetated levee, concrete drain channel, concrete diversion, gabion wall, masonry wall, drop structure, slope stabilization, sediment trap, perennial crop, and furrow dam. The functions of these BMPs were explained and recommendations were made for better implementation in future. Most of the BMPs were not target source control and the necessities of source control were emphasized. It also was recommended that MOE and MOFAFF need to cooperate in controlling and managing agricultural NPS pollution, reducing the possibility of implementing wrong policies and programs, and helping improve water quality effectively and economically.

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