Wetland Paddy Fields as Green Infrastructure Against Flood

Abstract Inundation simulation was carried out for an inland depression mainly covered by paddy fields to estimate its flood retention volume. In addition surface water flooding, river flooding combined with it also explored in a wide range of precipitation including 1000-year return period. The results showed that the studied area can retain approximately 60% total inundation Judging from relationship between volume and number inundated buildings above floor level, we could two reference values regarding potential floodwater fields: one at which damage starts appear other where seriously expands main residential area. By using these values, demonstrated importance land-use strategies alleviation. words, transferring levels safer places, be increased higher well agrees concept green infrastructure. idea alleviation deduced this study applied similar near-shore depressions cut off sand dunes, are common Japan.