Tags: infrastructure, metropolitan, outer, underground, discharge, kasukabe, worlds, largest, flood, water, diversion, facility, built, mitigate, overflowing, citys, major, waterways, rivers, rain, typhoon, seasons
Tags: infrastructure, street, columbus, cost-efficient, mitigate, damage, caused, american, neighborhoods, freeway, construction, holds, lanes, traffic, commercial, buildings, surrounding, seen, significant, development, bridge, built