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U.S. Fish & Wildlife Service
Return to Billy Frank Jr. Nisqually National Wildlife Refuge

Projects and Research

Updated May 7, 2026

 

In 2009, in partnership with the Nisqually Indian Tribe and Ducks Unlimited, Inc., the largest estuary restoration project in the Pacific Northwest was completed with the removal of the century-old Brown Farm Dike in the Nisqually River Delta. The tides returned to 762 acres of estuary. The enhancement of freshwater wetlands diversifies available habitat and assists in the recovery of Puget Sound salmon and wildlife populations. Subsequent monitoring and research is documenting the changes over time and the benefits to fish and wildlife, both within the Delta and beyond in South Puget Sound.

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