Floodwaters stick around after hurricanes, tsunamis, and other storms because there’s often too much water for the land and drainage systems to handle at once. In flat areas, water has nowhere to flow, so it pools up and takes longer to evaporate or get absorbed. If the ground is already saturated from previous rain, it can’t soak up any more water, leaving the excess to linger on the surface. Additionally, debris from the storm can block drainage systems and rivers, slowing down the natural flow of water, which makes the flooding last even longer.
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