![]() "We have 7% more water vapor that we can cram into the atmosphere. In Blue Hill, for example, near Norwood, 2-inch rain events have gone from happening once per year on average in the late 1800s to three times per year now. In a few places, FEMA assessed a higher flood risk than First Street did, mostly in the towns surrounding Buzzard's Bay, the body of water to the southwest of Cape Cod.įirst Street's flood maps factor in climate change, which is causing more heavy rain events around the world. The greatest increase in risk statewide is in Adams, a town in the Berkshires, according to First Street's data (which didn't cover all municipalities in the state). Click on each colored-in municipality for more information.įirst Street found that 8.7% more properties in the city of Boston are at risk of flooding than FEMA found - that's four times the number of properties at risk. This map shows comparative flood risk in Massachusetts as assessed by FEMA, the federal agency whose determinations are a benchmark for the insurance industry, and by the First Street Foundation, which generally found a greater risk of flood for municipalities. 2010 High Tide + 7.This animation shows the flood risk in Norwood, Massachusetts, as assessed by FEMA (labeled minimal risk) and the First Street Foundation (labeled greater risk).įirst Street shared Massachusetts flood risk projection data exclusively with NBC10 Boston and NECN, and, with a few exceptions, it shows much greater flood risk across the state than has been assessed by FEMA - in some places dramatically so.2010 High Tide + 5 feet Dorchester Quincy.2010 High tide + 2.5 feet Dorchester Quincy. ![]()
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