The statistical model was developed for estimation of water qualities in the Cho-gang stream. The equations for the relationship between the water quality and the flow in the stream could be estimated by the regression analysis. Water quality was a fu...
The statistical model was developed for estimation of water qualities in the Cho-gang stream. The equations for the relationship between the water quality and the flow in the stream could be estimated by the regression analysis. Water quality was a function of one independent variable(flow) in the simple regression model. The water qualities included BOD and TP measured from 2002 to 2005 in the Cho-gang stream. As the results of analyzing observed data and simulated data extracted by regression model, the study analyzed that RMSE of BOD was 0.33 mg/L and RMSE of TP was 0.03 mg/L. For the accuracy improvement of regression model, it is necessary to develop the multiple regression model with the various watershed parameters.