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Lesser Slave River News

Interdepartmental News and Resources

Blue-Green Algae Advisory for Lesser Slave Lake

A blue-green algae (cyanobacteria) bloom has been identified in areas of Lesser Slave Lake.

Residents living near the shores of this lake, as well as visitors to this lake, are advised to take the following precautions:

  • Avoid all contact with blue-green algae (cyanobacteria) blooms. If contact occurs, wash with clean water as soon as possible.
  • Do not swim or wade, or allow your pets to swim or wade in any areas where blue-green algae (cyanobacteria) is visible.
  • Do not feed whole fish or fish trimmings from this lake to your pets.
  • Consider limiting human consumption of whole fish and fish trimmings from this lake, as it is known that fish may store toxins in their liver (people can safely consume fish fillets from this lake).
  • Boiling of this water will NOT remove the toxins produced by blue-green algae.

Blue-green algae is naturally occurring, and often becomes visible when weather conditions are calm. Appearing like scum, grass clippings, fuzz or globs on the surface of water, blue-green algae can be blue-green, greenish-brown, brown, and/or pinkish-red, and often smell musty or grassy.

People who come in contact with visible blue-green algae or who ingest water containing blue-green algae may experience skin irritation, rash, sore throat, sore red eyes, swollen lips, fever, nausea and vomiting and/or diarrhea. Symptoms usually appear within one to three hours and resolve in one to two days. Symptoms in children are often more pronounced; however, all humans are at risk of these symptoms.

Exposure to the bacteria may be fatal to pets.

Weather and wind conditions can cause algae blooms to move from one location in the lake to another. As such, this advisory will remain in effect for Lesser Slave Lake, until further notice.

If you suspect a problem related to blue-green algae or if you require further information on health concerns and blue-green algae, please call Health Link at 811. Additional information is also available online at www.ahs.ca/bga.

Alberta Health Services is the provincial health authority responsible for planning and delivering health supports and services for more than four million adults and children living in Alberta. Its mission is to provide a patient-focused, quality health system that is accessible and sustainable for all Albertans.


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Welcome to Lesser Slave River

Just a few hours due north of Edmonton lies the remarkable region of Lesser Slave River. From breathtaking expanses of boreal forest and unspoiled natural wonders to a thriving economy and genuine work/life balance, opportunities abound.

Here you'll discover a place of rugged beauty. A place of real people. A place you'll never want to leave.

Reeve Murray Kerik
Municipal District of Lesser Slave River no. 124