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Sea Level Rise Projections

Effects of Sea Level Rise in New York State

Intensified flooding and storm surge are an ever-greater threat to New York’s people, infrastructure and economy as sea-level rises. By 2100, sea levels will be 18 to 50 inches higher than they are today along coastlines and estuaries. This vital information will be incorporated into New York development and design plans because of the Community Risk and Resiliency Act  (CRRA), as enacted in 2014 and the 2019 Climate Leadership and Community Protection Act (CLCPA,

On December 31, 2015, the State Department of Environmental Conservation (NYSDEC) published Observed and Projected Climate Change in New York State: An Overview  which  provides a summary of observed and projected climatic conditions, and potential effects of changes in these conditions, for New York State

In 2017, DEC adopted 6 NYCRR Part 490, Projected Sea-level Rise. The table below shows the NYSDEC’s sea-level rise projections over different time intervals divided into 3 geographic regions, the Mid-Hudson, the New York City/Lower Hudson, and the Long Island regions.

Planning now for sea-level rise will reduce the vulnerability of communities living along New York State’s 1,850 miles of tidal shoreline for decades to come.

Sea-level rise projects for three areas in New York State based on 6 NYCRR Part 490, Projected Sea-level Rise

Sea-level rise projections. Inches of rise relative to 2000-2004 baseline. From 6 NYCRR Part 490

Several guidance documents have been developed as a result of the Community Risk and Resiliency Act, listed below and see DEC CRRA page for more details.

Model Local Laws to Increase Resilience (

Using Natural Measures to Reduce the Risk of Flooding

State Flood Risk Management Guidance (SFRMG)

Guidance for Smart Growth Public Infrastructure Assessment

Additional Tools For Mapping Sea Level Rise:

Sea Level Rise Mapper – The Sea Level Rise Mapper is a tool for communities and stakeholders to create visualizations of future scenarios of sea level rise.The data and mapping products displayed on this site are a combination of results from new analyses by Scenic Hudson and existing data from a variety of sources including NYS DEC, US EPA, US Census Bureau, Dr. Roger Flood (SUNY Stony Brook) and FEMA.  Data layers include submerged aquatic vegetation, shoreline types and tidal wetlands.

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NOAA Sea-Level Rise Viewer – This mapper is an interactive tool which allows the user to view some of the potential impacts and extent of sea level rise under differing scenarios at any location throughout the United States.

Hudson River Flood Impact Decision Support System – An interactive map application that allows users to evaluate the scale of potential flooding for tidally-affected shorelines of the Hudson River Valley and the Long Island Sound coast of Westchester County under a variety of sea level rise and storm scenarios. (Kytt McManus, CIESIN, Earth Institute at Columbia University)

For more information about CRRA and sea-level rise projections for NY, visit:

Tivoli Bays Launch Closure – 2020

The canoe and kayak launch on the Kidd Lane access road at Tivoli Bays WMA is closed for renovations until further notice. At this time, DEC does not have an estimated completion date for the project. Please contact Nathan Ermer at 845-256-3047 for more information about this project. Thank you for your patience and understanding.