Sea level is one of the fastest rising in the US with measurements in eight southern states showing a rise of 15 centimeters over the past 14 years, according to a Washington Post analysis.

From Texas to North Carolina in particular, sea levels have risen at least 15 centimeters since 2010 with the Gulf of Mexico showing twice the global rate of rise.

In December, Charleston, SC, recorded the fourth-highest sea level rise since records began in 1899. The average sea level has risen 18 cm since 2010, four times the rate of the previous 30 years.

In Jacksonville, Florida, sea levels have risen 15 centimeters over the past 14 years, with the number of residents expected to face flooding problems expected to more than triple in the coming decades.

In Galveston, Texas, the rate of sea level rise surpassed any previous record as it rose 20 centimeters in 14 years. Officials plan to install several pumping stations in the coming years to protect the area from flooding, largely funded by federal grants. The city’s mayor expects each pump to cost more than $60 million — a figure that could dwarf the city’s annual tax revenue.