According to the United Nations (UN). an additional 1. 35 billion people will live in cities by 2030. Well-planned measures are essential for reducing the risk of flash floods. https://www.roneverhart.com/HGST-Ultrastar-7K6000-HUS726040ALS214-4TB-7-2K-RPM-SAS-12Gb-s-512n-128MB-3-5-SE-Hard-Drive/