Abstract
Recently, we have proposed the method-current control using dispersed aeration-that is able to restrain abnormal increase of algal bloom by controlling the current artificialy as one of the techniques for preserving water quality in reservoirs. We carried out field test on this current control system as measures against water quality control for reservoir at Terauchi Dam for a month, reported upon effect on water quality with facilities for circulatory fluid control in this paper. As a result, we confirmed the function on the current control system, effect onwater quality control in the reservoir and hydraulic stability of facilities for circulatory fluid control.