Based on its regular monitoring of blue-green algae (cyanobacteria) toxins in Minneapolis lakes, the Minneapolis Park and Recreation Board (MPRB) is issuing a hazardous algae advisory for Lake Nokomis 50th Street Beach. This week’s water quality sample at this location found that Microcystin levels exceeded state-specified MPCA guidelines.
In addition, MPRB is extending last week’s advisory for Lake Nokomis Main Beach. While Microcystin levels at this location were below the advisory guideline, blue-green algae is still abundant in the lake and conditions can change quickly based on weather and wind direction.
Hot weather, sunny skies and water temperatures higher than 75°F are all ideal conditions for the growth of blue-green algae. Scroll down to see recommendations for a hazardous algae advisory.
Additional beach closures
As noted in an update yesterday, five other MPRB beaches are closed:
- Bde Maka Ska 32nd Street Beach
- Bde Maka Ska North Beach
- Lake Harriet Southeast Beach
- Lake Hiawatha Beach
- Wirth Lake Beach
E. coli bacteria levels at these locations exceeded state-specified guidelines. These conditions are likely due to high water levels washing E. coli into the lakes from their surroundings. Learn more about water quality at Minneapolis beaches.
Where to go swimming
Beaches
– Map: Locations and Water Quality Status
Water Parks, Pools and Splash Pads
– General Information: Water Parks | Wading Pools & Splash Pads
– Summer hours for MPRB’s two indoor pools are Monday-Wednesday-Friday, 12 to 3pm
Recommendations for a hazardous algae ADVISORY
- Ingesting water with cyanobacteria can be harmful to humans and pets.
- When in doubt, stay out: Do not swim when a suspected hazardous algae bloom is present.
- Don’t play in algae scum or mats in the water or on the shore.
- Before cooking any fish caught in the lake, throw away guts and clean fillet with tap or bottled water.
- If exposed to blue green algae, shower and rinse immediately.