| Abstract |
| This study was conducted to identify the runoff characteristics of non-point source according to rainfall in Nam watershed. Land-uses of the Nam watershed were surveyed paddy field 9.1%, crop field 13.4%, mountainous 61.6%, urban 8.8%, and etc. 7.1%. Mean runoff coefficients in each area were observed Ⅰ area 0.06 and Ⅱ area 0.06. In the relationship between the rainfall, peak-flow, and correlation coefficients(r) were investigated Ⅰ area 0.7449, and Ⅱ area 0.7669. In the relationship between the antecedent dry period, first flow runoff, and correlation coefficients(r) were investigated Ⅰ area -0.4419 and Ⅱ area -0.2054. The discharge of pollutant concentrations relates the flow rate of storm-water. In the relationship between the rainfall, watershed loading, exponent values of BOD, COD, SS, T-N and T-P were estimated to 0.9743, 0.8947, 1.3964, 1.2797 and 1.5939, respectively. |
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| Key Words |
| Non-point source, Rainfall, Nam watershed, Peak-flow, Antecedent dry period, Runoff |
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