About the SLR Mapper


A tool for visualizing sea level rise scenarios and supporting adaptation planning

The Sea Level Rise Mapper is a tool for communities and stakeholders to create visualizations of future scenarios of sea level rise. With these maps and information, Scenic Hudson is supporting communities' efforts to develop adaptation plans by helping them to:

  • create maps of the extent and impacts of inundation and flood zone expansion
  • understand the locations of key built and natural resources
  • create graphics that illustrate different sea level rise scenarios in specific communities or stretches of the river
  • estimate the risks to infrastructure and natural resources  and the likelihoods of different inundation events
  • develop alternative adaptation scenarios and weigh their cost and benefits with respect to built infrastructure and natural resources

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.

  • All elevation information is from a high-resolution LiDAR topography product collected by the NYS DEC Hudson River Estuary Program in 2012.
  • The elevation of sea level along the estuary was derived from tidal datum research conducted by Dr. Roger Flood and his students at SUNY Stony Brook.
  • Current 1 percent flood zone information was derived from FEMA Digital Flood Insurance Rate Maps and Q3 Maps.
  • Current locations of municipal infrastructure, brownfields, sewage treatment facilities and other assets were provided by NYS DEC and US EPA.
  • Current locations of tidal wetlands and submerged aquatic vegetation beds were provided by the NYS DEC Hudson River Estuary Program and Hudson River National Estuarine Research Reserve.
  • Data on shoreline condition was provided by NYS DEC Hudson River Estuary Program and modified by Scenic Hudson.
  • Projections of future areas under the high tide line (inundation) and within 1 percent flood zones were generated through linear superposition techniques.
  • Projected numbers of households and people at risk from future inundation or coastal flooding were derived from 2010 US Census data.

The maps and data currently served here are released as Version 1.0 of the Scenic Hudson Sea Level Rise Mapper.


Download a more complete description of the methods used to develop our sea level rise model and analyses here: 

 Scenic Hudson Sea Level Rise Modeling Methods.pdf