Table 7. Water quality survey results in Yeouicheon (2)
Site | Date | TN (mg/L) | DTN (mg/L) | NH3-N (mg/L) | NO3-N (mg/L) | TP (mg/L) | DTP (mg/L) | PO4-P (mg/L) | Chlorophyll-a (mg/m3) |
Up stream | 03.24 | 5.905 | 6.173 | 0.166 | 5.444 | 0.046 | 0.038 | 0.020 | 28.1 |
07.17 | 3.933 | 3.785 | 0.024 | 3.406 | 0.041 | 0.033 | 0.030 | 1.8 |
09.29 | 4.970 | 4.941 | 0.020 | 4.609 | 0.038 | 0.029 | 0.028 | 2.6 |
11.30 | 6.802 | 7.226 | 0.225 | 6.116 | 0.027 | 0.023 | 0.020 | 0.9 |
Mean | 5.403 | 5.531 | 0.109 | 4.894 | 0.038 | 0.031 | 0.025 | 8.3 |
Seawon bridge | 03.24 | 5.421 | 5.190 | 0.000 | 4.908 | 0.041 | 0.023 | 0.014 | 22.7 |
07.17 | 3.460 | 3.559 | 0.014 | 3.205 | 0.035 | 0.031 | 0.032 | 1.6 |
09.29 | 4.268 | 4.320 | 0.017 | 3.962 | 0.034 | 0.028 | 0.032 | 2.2 |
11.30 | 6.214 | 6.350 | 0.068 | 5.581 | 0.026 | 0.021 | 0.019 | 0.5 |
Mean | 4.841 | 4.855 | 0.025 | 4.414 | 0.034 | 0.026 | 0.024 | 6.7 |
Yeoui bridge | 03.24 | 4.333 | 4.118 | 0.070 | 3.911 | 0.083 | 0.033 | 0.023 | 3.4 |
07.17 | 3.276 | 3.277 | 0.016 | 2.999 | 0.030 | 0.027 | 0.028 | 2.0 |
09.29 | 3.965 | 4.094 | 0.067 | 3.756 | 0.035 | 0.028 | 0.035 | 1.0 |
11.30 | 4.853 | 4.833 | 0.276 | 4.066 | 0.051 | 0.032 | 0.032 | 0.5 |
Mean | 4.107 | 4.081 | 0.107 | 3.683 | 0.050 | 0.030 | 0.030 | 1.7 |