By Olivia Rosane, EcoWatch. Crossposted with permission from EcoWatch.

More than 300,000 U.S. coastal homes could be uninhabitable due to sea level rise by 2045 if no meaningful action is taken to combat climate change, a Union of Concerned Scientists (UCS) study published Monday found.

The study, Underwater: Rising Seas, Chronic Floods and the Implications for U.S. Coastal Real Estate, set out to calculate how many coastal properties in the lower 48 states would suffer from “chronic inundation,” non-storm flooding that occurs 26 times a year or more, under different climate change scenarios.