Special Issue for the 13th IWA International Specialist Conference

Evaluation of non-point source pollution reduction by applying BestManagement Practices using a SWAT model and QuickBirdhigh resolution satellite imagery

MiSeon Lee , GeunAe Park , MinJi Park , JongYoon Park , JiWan Lee , SeongJoon Kim


Received October 17, 2009,Revised January 15, 2010, Accepted , Available online

Volume 22,2010,Pages 826-833

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This study evaluated the reduction e ect of non-point source pollution by applying best management practices (BMPs) to a 1.21 km2 small agricultural watershed using a SWAT (Soil andWater Assessment Tool) model. Two meter QuickBird land use data were prepared for the watershed. The SWAT was calibrated and validated using daily streamflow and monthly water quality (total phosphorus (TP), total nitrogen (TN), and suspended solids (SS)) records from 1999 to 2000 and from 2001 to 2002. The average Nash and Sutcli e model e ciency was 0.63 for the streamflow and the coe cients of determination were 0.88, 0.72, and 0.68 for SS, TN, and TP, respectively. Four BMP scenarios viz. the application of vegetation filter strip and riparian bu er system, the regulation of Universal Soil Loss Equation P factor, and the fertilizing control amount for crops were applied and analyzed.

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