Abstract
The concrete revetments are changed to hottest condition in the summer on the Tokyo Metropolitan. The peak of the temperature reaches 50 deg. on the concrete revetments. This paper is the study on the heat island effect of the river institutions, from the mitigation of gradual decrease to the heat of the riverside land on the Naka River by the revetment sprinkling and the revetment planting. The results are summarized into 2 points as follows. 1) The covering on the concrete revetments by the green this case, the surface temperature of the revetments decreases 2.3 deg. on the average of the experiment term. 2) The sprinkling on the concrete revetments by the pump-up of the stream this case, the surface temperature of the revetments decreases from 4 to 6 deg. on the under 1 hour.
