Investigation on Run-off of Residential Area with Infiltration Facilities

Abstract

This report is delivered on run-off of residential area with infiltration facilities. The rainfall datas were classified into three cases. The results were as follows:(1) if it was even slightly rainfall, the ratio of run-off was 0.1 or less.(2) If it was peak shaped rainfall, the ratio of run-off was about 0.2 in cace of 20 mm/hr.(3) It was found that infiltration capacity of the facilities had not changed since field observation was begun.