抄録
In the disaster area of the Great East Japan Earthquake, local residents disagree over the huge seawall plan proposed by the prefecture government. The prefecture government presented the huge seawall plan in order to protect a human life and an asset from a big tidal wave of the level 1, which is based on the Coast Law and the guideline shown by the national government committee. The denizens who mainly perform fi shery and tourism near a coast are opposed to a huge seawall because it becomes impossible to look at their sea with that.
In this paper, we arrange and compare the costs and the benefits brought by a huge seawall and then explain that the opportunity costs pictured by denizens differ from what a government considers. The Coast Law specifies that, when building a seawall, a government should take into consideration not only protection of a coast but also environment protection and utility value with a coast, and furthermore a government should ask to denizens' opinion to refl ect it to a planning. Although a reconstruction project requires speed, it should be advanced on the assumption of denizens' consensus. We propose the reexamining process of the seawall plan according to the law system.
