![]() FEMA: New maps complement federal research The increase was just as pronounced in Clinton County, with First Street finding 2,091 flood-prone properties (5.7% of properties in the county) compared to FEMA's identification of 1,397 properties (3.8%).Įaton County saw a two-fold increase, with First Street identifying 3,181 flood-prone properties (3.4%) compared to FEMA's 1,582 (6.9%). Related: Flood insurance costs could jump 400% Lansing wants to fight backīut First Street Foundation found nearly one-and-a-half times as many Ingham County properties to be at that risk level.Īccording to First Street, 5,816 Ingham County properties, 5.7% of all properties in the county, have at least a 1% chance of flooding annually. In Ingham County, FEMA considers 3,962 properties, or 3.9% of properties in the county, to be in a 100-year floodplain, meaning the properties have a 1% or greater chance of flooding in a given year. ![]() Climate change is increasing that risk as it alters water levels and contributes to heavier rainfall and more extreme storms, researchers noted.įirst Street also took at a more detailed look at the risks posed by small streams and tributaries, researchers said. The nonprofit added a predictive element to calculate the changing probability of flooding over time. More: Lakes Michigan and Huron flirt with record high water levels, top previous May high First Street considered climate changeįirst Street partnered with universities to build on data from FEMA and peer-reviewed sources. ![]() According to the new maps, millions of Americans face previously under-acknowledged flood risk, leaving them vulnerable to displacement and financial loss. Those calculations matter to residents as they decide whether to buy flood insurance and where to build or buy homes and businesses. Maps from the Federal Emergency Management Agency significantly under-estimate the chances of flooding, according to scientists who found thousands more Greater Lansing properties to be at risk of flooding.Ī team of more than 80 researchers with the nonprofit First Street Foundation recalculated flood risk nationwide to account for climate change and other factors.Ĭompared to FEMA's maps, First Street's map show an increase of nearly 60% in the total number of flood-prone properties in Ingham, Eaton and Clinton counties. ![]()
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