ABSTRACT
This chapter examines the infiltration capacities of several types of combined stormwater infiltration facilities constructed at an experimental field. It also examines researched effective combinations of stormwater infiltration facilities for stormwater runoff control; investigated the mechanism of stormwater infiltration; and built a simulation model to predict the volume of stormwater infiltration at the combined stormwater infiltration facilities. The chapter presents groundwater levels by the distance from the bottom of the gravel layer laid under the porous asphalt pavement. The stormwater, which once infiltrated through an infiltration facility, also infiltrates to the other infiltration facility at the combined infiltration facilities. Many stormwater infiltration facilities, for example porous asphalt pavement, infiltration stormwater inlets, and infiltration stormwater pipes, have been constructed to appropriately control urban storm runoff in Japan. In addition, many sites contain more than one facility in order to achieve effective stormwater control in urban areas.
