![]() ![]() ![]() Massachusetts is one of 15 states that does not have such a requirement. The analysis featured several recommendations, including more widespread access to federal flood claim data, so further analysis can be done better incorporation of flood data into planning projects and legislation that requires a property’s flood history be disclosed to potential buyers. The authors of the analysis said they are hoping it will help policy makers as they consider the threat of inland flooding. In the interviews, Woburn residents described severe anxiety during heavy rains and the financial toll from the flooding. 2% chance flood zones - locations identified on FEMA maps as areas of ‘minimal flood hazard.’ ” “This is perhaps not surprising as almost all the interviewees live outside the 1% and. “We found that very few residents had prior knowledge of their flood risk,” the authors wrote. Ninety percent said they had groundwater seep up through their basement floors. The MAPC authors used Woburn as a case study, interviewing 44 residents about the 2010 floods. “They’re nowhere near up to date with the precipitation that we know is already here, and coming,” Norton said. The user also has the option of analyzing the data in low (unit mass resolution) or high mass resolution. Both low and high mass ranges can be selected. But those maps have been criticized for failing to keep up with changing patterns due to heavier rains. The mass scale desired in the graphic output. ![]() Most planners rely on FEMA flood maps for decisions about where to build. When they compared a historical 1892 map of Newton wetlands with the location of flood claims in 2010, they found clusters of flood claims on former wetlands that were filled in long ago but are not included on official flood maps.Ī train made slow progress through flooded tracks next to Spectacle Pond in Littleton. In the analysis, the authors wrote that the link between filled wetlands and flooding appeared clear. “We don’t think about the underground streams, we don’t think about the filled-in wetlands.” “With climate change changing our precipitation patterns, we have an entire massive infrastructure that the vast majority of us never thinks about,” said Norton, who was not involved in the MAPC report. Those included being built within the 100- and 500-year flood zones - meaning they have a 1-in-100 or 1-in-500 chance of flooding in any given year being built between 19 on flat elevations or sandy soils or being near water, wetlands, or filled wetlands.Įmily Norton, executive director of the Charles River Watershed Association and a Newton city councilor, said the findings about wetlands were particularly concerning because so much of Greater Boston was built on filled wetlands and many people are not aware of the vast system of underground streams below them. Herbst and her coauthors concluded there wasn’t any one factor that could easily predict if a home was at risk of flooding, but there were some indicators that seemed to make it more likely. ![]()
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