METHOD AND DEVICE FOR GUIDING FLOODWATER

PROBLEM TO BE SOLVED: To provide a method of guiding the floodwater to protect a specified area as a safe area from the floodwater in the case of an emergency such as an interruption to service without hindering the sight near the specified area. SOLUTION: Guide plates 5, 5, etc., are embedded underground of places S'1, S'2, S"1 near the upstream of the specified areas S1, S2, in which public facilities such as general residences, schools and hospitals are build, to be estimated that the floodwater flows. When a river floods or when a danger that the river floods is estimated, the guide plates 5, 5, etc., are raised to the predetermined height on the ground by a hydraulic piston cylinder unit. The floodwater is guided by the raised guide plates 5, 5, etc., to a temporary water storing pond, a drainage, and a bank by deflecting the flow of the floodwater from the specified areas S1, S2 to secure the safety of the specified areas S1, S2.