U.S. Water News Online
ST. PAUL -- A stretch of hot weather in Minnesota may be
producing blue-green algae, a toxic algae in Minnesota lakes that can
harm animals and people, state pollution regulators said.
Workers with the Minnesota Pollution Control Agency found several
dead bullheads on Goose Lake in White Bear Lake, and a severe bloom
of algae may be the cause, the agency said.
"Conditions are now ripe for creating severe algae blooms," MPCA
lakes expert Steve Heiskary said in a news release. "We're starting
to get reports and inquiries from around the state about algae, and
people are especially concerned about blue-green algae."
While algae are a natural part of the ecosystem, under the right
conditions they can grow dramatically, turning water cloudy and
green. Blue-green algae thrive in warm and shallow lakes that are
rich in nutrients. Most health problems happen when algae concentrate
around a shoreline and animals drink the water or otherwise ingest
Human health effects can include irritation of the skin, eyes and
nasal passages, nausea and vomiting. Extreme cases can produce
paralysis and respiratory failure, the according to the agency.
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