— Kendall Harmon (@KendallHarmon6) July 13, 2017
In just 18 years — less than the life of some mortgages — rising seas will cause disruptive flooding in about 170 coastal communities across the United States, including Edisto and Kiawah islands, a new analysis says.
Prepared by the Union of Concerned Scientists, a nonprofit science advocacy group, the report is said to be the first nationwide attempt to identify tipping points — times and places where flooding is so frequent that residents abandon their land or pump big bucks into projects to hold back the ocean.
No stranger to high water, Charleston already sees regular “nuisance floods” at seasonal high tides, though the problem has grown worse in recent years. Charleston averaged four days of tidal flooding 50 years ago. Last year, the city had a record 50 flooding days, many when the sun shined.
Even so, the city has yet to reach a “chronic inundation” threshold — when 10 percent or more of its usable, non-wetland area floods at least 26 times per year, according to the Union of Concerned Scientists report.
That will change within a couple of generations.