WASHINGTON, Dec. 20 (UPI) -- Washington, D.C. and Annapolis, Md. are already past a "tipping point" for frequent flooding caused by sea level rise, a new study finds.
Using tide-gauge data and sea level rise projections, researchers from the National Oceanic and Atmospheric Administration (NOAA) found Washington, D.C., Annapolis and Wilmington, N.C. have already reached a point where the cities will receive over 30 days of flooding per year with water rising up to two feet above high tide levels.