Sea-Level Rise and Coastal Habitats in the Pacific Northwest: An Analysis for Puget Sound, Southwestern Washington, and Northwestern Oregon

This report, by the National Wildlife Federation, documents results from a study on the projected impacts of sea-level rise to key coastal habitats in the Pacific Northwest. The study modeled sea-level rise up to 2 meters, based on input from prior studies, and examined its effects including the inundation of estuarine beaches, loss of tidal flats and marshes, and the inundation of inland swamps. The report also provides a brief description of how these effects will impact wildlife. Finally, the report makes one broad recommendation for planners to account for sea-level rise in their habitat restoration projects.

SLAMM 5.0 model results and impacts are provided for 11 sites including:

1) Nooksack Delta, Lummi Bay, and Bellingham Bay;

2) Padilla Bay, Skagit Bay, and Port Susan Bay;

3) Whidbey Island, Port Townsend, and Admiralty Inlet;

4) Snohomish Estuary and Everett;

5) Ediz Hook, Dungeness Spit, and Sequim Bay;

6) Dyes Inlet, Sinclair Inlet, and Bainbridge Island;

7) Elliott Bay to the Duwamish Estuary;

8) Annas Bay and Skokomish Estuary;

9) Commencement Bay, Tacoma, and Gig Harbor;

10) Olympia, Budd Inlet, and Nisqually Delta; and

11) Willapa Bay, Columbia River Estuary, and Tillamook Bay.

Publication Date: July 2007

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  • Assessment
  • Modeling tool

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