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The good, the bad, and the algae: Aquatic plants can be helpful or harmful
Experts explain the different kinds of algae that river users might see on the St. Croix.
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Harmful algae bloom temporarily closes lower St. Croix River beaches
Natural organisms stimulated by extra nutrients create unsafe water conditions.
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Lower St. Croix included in national study of toxic algae
Scientists are working to understand when, where, and why algae can produce dangerous chemicals.
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Flooding and frozen ground raises fears of summer algae problems
This spring’s conditions could fuel big blooms of algae that can make Lake St. Croix water unpleasant, or even unsafe.
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Microscope reveals diverse life in the St. Croix River
See some of the tiny organisms that live in the river through the eyes of a young photographer.
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Lake Looks Like a River: Making Sense of the Lower St. Croix
How water moves through the broad, 25-mile stretch has big implications for cleaning up its algae problem.
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Spring in Bloom on the St. Croix
A boater concerned about pollution collected an algae sample so scientists could see what it said about the river.
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Climate Change Poised to Cause ‘Monster-Sized’ Algae Blooms in the St. Croix
Global warming will mean more spring floods and ideal conditions for late-summer algae.
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Algae Explosion in Lower River Inspires New Calls for Runoff Reduction
Recent blue-green algae blooms are unnatural and unhealthy for people, pets, and the river.