A water retention experimental device according to an aspect of the present invention comprises: a body which replaces a riverside where a river flows; a water tank provided at both end portions of the body and supplying water so that the water flows in the body; a water retention tank provided on both side surfaces of the body and storing the water overflowing from the body; and a guide wall which guides the water to move to the water retention tank.;COPYRIGHT KIPO 2014
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