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2. M. Inoue and M. Kamogawa, “The Need to Change the Concept of Water-related Disaster Prevention,” Science & Technology Trends – Quarterly Review, No.44, pp. 3/8-25, 2012.
3. World Enenrgy Council, “2007 Survey of Energy Resources,” 2007.
4. Agency for Natural Resources and Energy, “Hydropower Capability,” http://www.enecho.meti.go.jp/category/electricity_and_gas/electric/hydroelectric/database/energy_japan006/ [accessed January 15, 2018]
5. New Energy Foundation, “Report on Basic Survey of Guidance Projects for the Promotion of Small-Scale Hydropower Development (Survey on Technically Exploitable Capability of Power Generation Using Untapped Heads),” 2009 (in Japanese).