earticle

영어

Water quality modeling was performed for the purpose of prediction after development of upper watershed of an agricultural reservoir, using WASP7 model. The agricultural reservoir was divided into 5 segments. Water quality for modeling were consist of DO, BOD5, Chlorophyll-a, TN, and TP. The results of water quality modeling using WASP7, a range of relative error for calibration of DO, BOD5, Chlorophyll-a, TN, TP according to annual average are 12%, 25%, 0.6%, 2.8% and 37%, respectively. After upstream watershed development, in case of without nonpoint pollution control, the increased water quality concentration of BOD5, TN, TP were 5.47mg/L, TN 1.74mg/L, and TP 0.131mg/L, respectively. In case of with nonpoint pollution control, the increased concentration of BOD5, TN, TP were 2.79mg/L, TN 0.26mg/L, and TP 0.083mg/L, respectively.