Data and Resources
Sea Level Rise Projections
This project provides an updated set of sea level rise projections that incorporates the latest science, provides community-scale projections, and is designed for direct application to risk management and planning.
Our new projections reflect the latest science on sea level rise and are an improvement over previous assessments. We recommend using these new projections for coastal impacts assessments within the state of Washington.
How is relative sea level rise projected to change along Washington’s coastlines?
The map below links to relative sea level rise (RSLR) projections for 171 sites along Washington’s coast. The projections for each site are provided as a downloadable excel spreadsheet which contains three worksheets: (1) an overview, (2) RSLR projections for a low greenhouse gas scenario (RCP 4.5), and (3) RSLR projections for a high greenhouse gas scenario (RCP 8.5).
For more information on these sea level rise projections and for extensive documentation on projection methodology please download the project report and associated appendices listed below.
Download Main Report: Projected Sea Level Rise in Washington State - A 2018 Assessment PDF (24 pages)
Appendices and Supplemental Material:
Miller, I.M., Morgan, H., Mauger, G., Newton, T., Weldon, R., Schmidt, D., Welch, M., Grossman, E. 2018. Projected Sea Level Rise for Washington State – A 2018 Assessment. A collaboration of Washington Sea Grant, University of Washington Climate Impacts Group, University of Oregon, University of Washington, and US Geological Survey. Prepared for the Washington Coastal Resilience Project. updated 07/2019
Technical Correction: Report citation was updated to include the University of Oregon, which was incorrectly attributed to Oregon State University in the 07/218 version.
Extreme Coastal Water Level: Guidelines to Support SLR Planning
In order to provide insight about the magnitude and frequency of coastal water levels during extreme events - important information for mapping future exposure to coastal flooding - we have produced the following report:
In order to help GIS professionals develop maps of sea level rise inundation we have produced the following:
Mapping Guidelines PDF (40Mb)
Mapping Guidelines PDF Compressed (3.2Mb)
GIS Data Zip File (2.3 Mb)
Example Maps Zip File (217 Mb)
Sea Level Rise Considerations for Nearshore Restoration Projects in Puget Sound
This considerations document aims to assist restoration professions with considering sea level rise impacts in the planning and design of nearshore restoration projects in Puget Sound.
Top Photo: Hugh Shipman (Washington Department of Ecology)