白子川流域の水路跡を活用した雨水流出調整効果に対する住民評価の調査

概要

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Collecting rainwater and penetrating it into the ground in a whole river basin and slow outflow into a stream path in waterway trails can prevent urban river flood and create important effects for human beings and for ecological creatures. In our proceeding paper, we had set up the elemental effects by such outflow control of rainwater. The purposes of this research was to obtain residents evaluations 1. on contigent local government policy for outflow control of rainwater in Shirako River basin and in waterway trails, and 2. on the elemental effects. 318 residents (16% of the total) answered the questions. (1) 80% of residents agreed the policy and admitted residents tax payment. The amounts of the tax per year were 5,000〜7,000 yen for outflow control of the whole basin and 3,000〜4,000 yen for streams in waterway trails. (2) The highly evaluated elemental effects by the residents were flood control, daily use, ecology, underground water cultivation, climate control, and amenity. (3) And we concluded that residents evaluations which were shown above (2)(3) proved the importance of our original effects by outflow control. (4) Some words of the effects were not clearly known by the residents. However, sketches and brief explanations of the effects seemed to have helped their understanding.
2005-07-30