1. Fujimoto, T., Kuribayashi, K., Sakabe, A., Kuroda, S., 2018. A study on failure mechanism of reservoirs in Okayama Prefecture caused by the heavy rain event of July. 61st geotechnical symposium, JGS (in Japanese).
2. Use of Swedish weight sounding tests;Inada;Tsuchi-to-Kiso,1960
3. Ministry of Land, Infrastructure, Transport and Tourism, Chugoku Development Bureau, 2018. Investigation report for the Oda River Banks of Takahashi River System. http://www.cgr.mlit.go.jp/emergency/odagawateibochosa.htm (in Japanese).
4. Ministry of Land, Infrastructure, Transport and Tourism, 2007. Specification for design of river banks (in Japanese).
5. Yabegawa Bank Investigation Committee, 2013. Yabegawa Bank Investigation Committee Report. http://www.qsr.mlit.go.jp/chikugo/site_files/file/torikumi/01plan_course/tyosa/saisyu/houkokusyo.pdf (in Japanese).