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Walla Walla's McNary Wildlife Refuge Reopens Sloughs 3 & 4 by Erin Wencl YakTri News, October 31, 2022

The sloughs were closed back in August of 2022 when toxic blue algae
was found at unsafe levels in water samples.

WALLA WALLA -- The Walla Walla Department of Community Health, in coordination with the U.S. Fish & Wildlife Service, has opened sloughs 3 and 4 at the McNary Wildlife Refuge.

The sloughs were closed back in August after water samples showed high levels of cyanobacteria. This is commonly known as blue-green algae.

Blue-green algae can be harmful to people, pets and livestock.

The WWCDCH and the U.S. Fish & Wildlife Service continued to monitor the levels found at the McNary Wildlife Refuge where weekly testing was done.

As of Monday, the results of this testing show sloughs 3 and 4 are now safe for recreational use.

Related Pages:
Want a Family-fun Time Learning about Snake Dams and Fish? Head to RiverFest this Weekend by Editorial Board, Tri-City Herald, 10/6/22
Health Officials: Water at McNary Wildlife Refuge Still Toxic in Some Areas by Staff, Walla Walla Union-Bulletin, 9/7/22
Shock of Deadly Nerve Toxins in Columbia River at Tri-Cities Prompts New Warnings by Erin Wencl, Tri-City Herald, 7/11/22