Table 18. Benthic macroinvertebrate index by survey site in Yeouicheon
Site
BMI
March
July
September
November
Mean
Upstream
62.7(C)
64.1(C)
72.5(B)
71.5(B)
67.7(B)
Seawon bridge
68.6(B)
62.7(C)
65.7(B)
65.5(B)
65.6(B)
Yeoui bridge
44.4(D)
64.1(C)
70.5(B)
45.8(D)
60.1(C)