Floodway; high-flow diversion Natural or man-made bypass channels or conduits that redirect flood waters around or away from urban centers or area of high population density.

• 泄洪道,分洪道,溢流槽天然或人造的泄洪渠或泄洪管道,以引导洪水绕过或远离城市中心或人口稠密地区。