In Korea, there have been many studies and progresses on various types of pilot scale or commercialized field scale Best
Management Practices(BMP) during the last 10 years. Runoff characteristics of diffuse pollutants from different land uses are
well identified and documented. However, for the coastal area connected directly with shoreline, runoff patterns and
management schemes of non-point pollution were not fully studied. Recently, coastal area is emerging as a new development
axis especially in west coast side of Korea such as Incheon city and Chungnam province, thus urbanized area rapidly
increased but there are no buffer zones and BMP facilities to aim at preventing direct discharge of the first flush into
coastal sea and beaches. In this study, parking area in Deacheon harbor, Boryeong City in Chungnam Province was selected
and rainfall runoff was monitored for two year period in order to examine run-off features from which proper type of BMP
suitable for coastal area is proposed. Coastal area usually has a low ground water level and consists of plain land, so that
large scale BMP such as storm water retention pond and wetland requiring great excavation works is not best management
plan. In addition, monitoring study shows that storm water from the paved parking area has a high salinity compared with
those in storm water from the inland. High salinity is detrimental for the vegetation. Therefore, BMP employing least
vegetative cover and also in terms of maintenance is a good option such as infiltration trench and porous pavement.