1. Ministry of Land Infrastructure Transport and Tourism SABO department(2018a).Occurrence report sediment disaster due to torrential rain disaster in July 2018 (25th/Sep.).http://www.mlit.go.jp/river/sabo/jirei/h30dosha/H30_07gouu_180925.pdf.
2. Ministry of Land Infrastructure Transport and Tourism SABO department(2018b).The whole country sediment disaster occurrence report in 2018.http://www.mlit.go.jp/river/sabo/jirei/h30dosha/H3005dosyasaigai.pdf.
3. NILIM(2016a).Manual of Technical Standard for establishing Sabo plan for debris flow and driftwood technical note of national institute for land and infrastructure management. National Institute for Land and Infrastructure Management Ministry of Land Infrastructure and Transport. No.904.http://www.nilim.go.jp/lab/bcg/siryou/tnn/tnn0904pdf/ks090402.pdf.
4. NILIM(2016b).Manual of Technical Standard for designing Sabo facilities against debris flow and driftwood technical note of national institute for land and infrastructure management. National Institute for Land and Infrastructure Management Ministry of Land Infrastructure and Transport. No905.http://www.nilim.go.jp/lab/bcg/siryou/tnn/tnn0905pdf/ks090502.pdf