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Birch Lake near BWCAW polluted by sulfate, advocates blame taconite mines

Dec 01, 2023 09:13AM ● By Content Editor
Photo: The mouth of the Dunka River at Birch Lake. (Photo via jakemccluskeyphotography/Flickr)

 - Quetico Superior Wilderness News - December 1, 2023

MPCA: High levels of problematic pollutant found in Birch Lake upstream from BWCAW

Several lakes and rivers upstream of the Boundary Waters Canoe Area Wilderness are contaminated with sulfate, which causes more mercury in fish and kills manoomin (wild rice), according to the Minnesota Pollution Control Agency and several citizen-led sampling efforts. In the past two years, the agency has considered new data that shows how waters downstream of past and present iron mines exceed standards for sulfate levels designed to protect the environment.

To read the full story, visit the Quetico Superior Wilderness News site here. 

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