Projected future 1% annual chance (100 year) floodplains to be used for planning and informational purposes. Shows potential flooding for tidally affected shoreline areas. Assumes 72 inches sea level rise for Nassau County, Suffolk County and the Hudson River Valley north of New York City. Assumes 75 inches sea level rise for New York City.
Represents the landward extent of moderate wave action associated with the projected future 1% annual chance (100 year) flood elevation. Assumes 72 inches sea level rise for Nassau County, Suffolk County and the Hudson River Valley north of New York City. These areas have water depths that would support a wave height expected to impart structural damage to residential development. Not available for New York City.
Credits and References
Flood Zones 72 Inches Sea Level Rise, Hudson River Valley
Center for International Earth Science Information Network (CIESIN)
Hudson River Flood Impact Decision Support System
http://www.ciesin.columbia.edu/hudson-river-flood-map/
Flood Zones 72 Inches Sea Level Rise, Nassau and Suffolk Counties, NY
Limit to Moderate Wave Action, Nassau and Suffolk Counties, NY and Hudson River Valley
New York State Energy Research and Development Authority (NYSERDA)
Coastal New York Future Floodplain Mapper
https://services.nyserda.ny.gov/SLR_Viewer/About
Flood Zones 75 Inches Sea Level Rise, New York City
New York City Department of City Planning
NYC Flood Hazard Mapper
https://www1.nyc.gov/site/planning/data-maps/flood-hazard-mapper.page
Please contact the Office of Climate Change
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climatechange@dec.ny.gov