![]() ![]() “It is our duty to move these New Yorkers out of harm’s way by offering them safer, regulated housing,” she added. The plan had laid out a decade-long timetable for new measures such as building new high-level storm sewers to better handle rain and working on a notification system for people in vulnerable areas.Īs reported by the New York Post, an early-warning system to evacuate basement apartment dwellers wasn’t slated to launch until 2023.īreaking with de Blasio, state Attorney General Letitia James urged the city Friday to provide rent vouchers “to all New Yorkers living in unregulated basement apartments.” “Once in a century events are happening regularly.” “We are now dealing with something inconceivable,” the mayor said during his morning press briefing. The plans showed awareness of vulnerable spots, as de Blasio Friday continued to describe the deluge brought by the remnants of Hurricane Ida as an unpredictable event - one he said New Yorkers should expect to recur. The interactive map, released in conjunction with Mayor Bill de Blasio’s stormwater resiliency plan and required by a 2018 City Council law, offers a granular look at the threat, with a foot or more of flooding predicted in some areas when combined with expected future sea level rise. In the meantime, to ensure that structures are constructed using the best available information, the New York City Building Code will continue to require new and substantially improved buildings to use the Preliminary FIRMs until a new map is created and adopted by the City.A stormwater risk map issued by the city in May showed serious possible flooding at homes where 10 people drowned in their basement apartments when record-breaking rainfall pummeled the city Wednesday night. This ground-breaking step will result in new flood maps that better account for the future risk of sea level rise and coastal storm surge for planning and building purposes, while protecting the affordability of flood insurance - which will continue to be priced against current flood risk. ![]() In addition, FEMA and the City will work together to create a new methodology to incorporate the growing risks of climate change and sea level rise. The City’s goal is to ensure FEMA’s Flood Insurance Rate Maps (FIRMs) provide residents with an accurate representation of the city’s current one percent annual flood risk (also known as the 100-year floodplain).įEMA and City officials agreed that the information submitted during the appeal period will be used to revise the Preliminary Flood Insurance Study (FIS) and 2015 Preliminary FIRMs. As a result, FEMA’s modeling overestimates the size (or extent) of the one-percent-annual-chance (aka 100-year) floodplain (i.e., where waters will reach during a flood that has a one percent chance of occurring each year). The City found technical and scientific errors in FEMA’s modeling that overestimate the height of flood waters during a one-percent-annual-chance flood event, the “Base Flood Elevation (BFE),” by between 1 and 2.5 feet across the city. **In October 2016, FEMA announced that it agreed with the City’s findings,** and that it would work with the City to revise the 2015 Preliminary FIRMs and issue new maps in the coming years that better reflect current flood risk. In June 2015, New York City filed a technical appeal of the Preliminary FIRMs. The issuance of the Preliminary FIRMs and FIS marked the first step in the official flood map update process, which included a public comment and a 90-day technical appeals period. In January 2015, FEMA released Preliminary Flood Insurance Rate Maps for New York City as well as the Preliminary Flood Insurance Study (FIS) for New York City, a narrative report of the city’s flood hazard. ![]() Find out more about understanding FEMA’s Flood Maps. Each flood zone tells homeowners what the risk is for flooding at their property. This area is also referred to as the Special Flood Hazard Area (SFHA) or the 100-year floodplain, and is broken down into smaller areas called flood zones. This high risk area has a one percent chance of flooding in any given year, and a twenty-six percent chance of flooding over the life of a thirty-year mortgage. These maps identify areas that are at high risk to flooding. FEMA creates Flood Insurance Rate Maps (FIRMs) that highlight flood risk and determine flood insurance and building code requirements. ![]()
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