Figure 1 : Diagram of the study site and the sampling points.

α-β Seta River
β-δ Uji River
γ-δ Kizu River
η-δ Katsura River
δ-φ Yodo River

Ariyadasa et al.Journal of Environmental Engineering and Ecological Science  2014 3:3DOI : 10.7243/2050-1323-3-3