Many US communities face frequent flooding in 18 years.

https://external.xx.fbcdn.net/safe_image.php?d=AQBLB9Bged3GtXv6&w=130&h=130&url=https%3A%2F%2Fwww.scientificamerican.com%2Fsciam%2Fcache%2Ffile%2F5E610C40-D1AF-4A67-86C0148A27A444E1_agenda.jpg%3Fw%3D600%26h%3D335&cfs=1&_nc_hash=AQCT-HShd_0AaM89
More than 90 locales, mostly in rural Louisiana and Maryland, already face chronic inundation
https://www.scientificamerican.com/article/scores-of-u-s-communities-face-frequent-flooding-in-18-years/?WT.mc_id=SA_DD_20170712