July 2020

Users can now zoom in one more level under Sea Level Rise, Scenarios and High Tide Flooding.

All locations – Photo simulations now have images for 7-10ft.

High Tide Flooding Historical Yearly Inundation Events charts now updating dynamically and showing data through 2019.

Washington – Eastern Puget Sound updated with new elevation data for Padilla Bay NERR and Skagit River Delta.

Florida – Remapped with updated VDatum tidal surface.

South Carolina – Remapped with new elevation data. New DEM available.

Louisiana – Remapped with new elevation data. New DEM available.

Texas – Remapped with new elevation data. New DEM available.

July 2019

Puerto Rico – Remapped with new elevation data. New DEM available.

Rhode Island – Remapped with new elevation data. New DEM available.

Massachusetts – Remapped with new elevation data. New DEM available.

New Hampshire – Remapped with new elevation data. New DEM available.

Maine – Remapped with new elevation data. New DEM available.

March 2019

Connecticut – Remapped with new elevation data. New DEM available.

Pennsylvania – Remapped with new elevation data. New DEM available.

Maryland – Northern and western Chesapeake Bay counties remapped with new elevation data. New DEMs available.

Washington – Eastern and southern Puget Sound counties remapped with new elevation data. New DEMs available.

September 2018

All locations - Source land cover data updated from 2006 to 2010.

All locations - Sea level rise, mapping confidence, and marsh migration mapped to 10 feet.

Hawaii, Guam, Saipan, American Samoa, Puerto Rico, and the U.S. Virgin Islands - High tide flooding mapping added.

Oahu, Hawaii - Remapped with new elevation data. New DEM available.

Guam - Remapped with new elevation data. New DEM available.

April 2017

Mississippi - Remapped with new elevation data. New DEM available.

San Francisco Bay - Remapped with updated VDatum tidal surface.

Important – Transformation uncertainties in the "Louisiana/Mississippi–Eastern Louisiana to Mississippi Sound" regional model have been found to range from 20 to 50 centimeters in particular locations from the Mississippi River Delta north to Lake Pontchartrain. These issues most likely can be attributed to subsidence, newly established datums, and changes to the understanding of NAVD88 based on new versions of the GEOID. The VDatum team is currently looking at resolving these uncertainties.

August 2016

Northern South Carolina, North Carolina, Virginia, Maryland, Delaware, New Jersey, and New York – Remapped with new elevation data based on Post-Sandy lidar from USGS and NOAA National Geodetic Survey. New DEMs available.

2015

San Francisco Bay, CA – Remapped to fix leveed areas. Levees and leveed areas displayed.

Louisiana – Mapped and added to viewer. Levees and leveed areas displayed.

U.S. Virgin Islands – Remapped with new elevation data based on 2013 lidar from NOAA

Port Arthur, TX – Remapped to fix leveed area

Freeport, TX – Remapped to fix leveed area

Texas City, TX – Remapped to fix leveed area

Maryland/Delaware border – Remapped to fix edge matching issue.

North Carolina/South Carolina border – Remapped to fix edge matching issue

Palm City, FL – Fixed elevation model and remapped

Charles and Mystic Rivers near Boston, MA – Fixed elevation model and remapped to fix dam protected area

Tillamook Bay, OR – Added elevation data and remapped to fill data gap

Oregon and Texas – Marsh tab updated with 2010 Coastal Change Analysis Program (C-CAP) land cover data