1. (IAHR Member), Associate Professor, Graduate School of Environmental and Life Science, Okayama University, Tsushima-naka 3-1-1, Kita-ku, Okayama 700-8530, Japan.
2. Associate Professor, Graduate School of Engineering, Tottori University, Minami 4-101, Koyama-cho, Tottori, 680-8550, Japan.
3. Professor, Graduate School of Environmental and Life Science, Okayama University, Tsushima-naka 3-1-1, Kita-ku, Okayama, 700-8530, Japan.
4. (IAHR Member), Doctoral Student, Graduate School of Environmental and Life Science, Okayama University, Tsushima-naka 3-1-1, Kita-ku, Okayama, 700-8530, Japan; Assistant Professor, Department of Irrigation and Water Management, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh.
5. Master Student, Graduate School of Environmental and Life Science, Okayama University, Tsushima-naka 3-1-1, Kita-ku, Okayama, 700-8530, Japan.
6. Manager, Spatial Information Section, Pasco Corporation, Higashiyama 2-13-5, Meguro-ku, Tokyo, 153-0043, Japan.