See which ones below . . . very few seem open.
BB Clarke Closed Regular beach monitoring has not yet begun. People may swim at their own risk. Blue-green algae (Cyanobacteria) may still be present and their levels can be variable depending on the waves and wind. Beachgoers should use common sense and avoid contact with algal blooms that they may observe.
Bernies Closed Regular beach monitoring has not yet begun. People may swim at their own risk. Blue-green algae (Cyanobacteria) may still be present and their levels can be variable depending on the waves and wind. Beachgoers should use common sense and avoid contact with algal blooms that they may observe.
Brittingham Closed Regular beach monitoring has not yet begun. People may swim at their own risk. Blue-green algae (Cyanobacteria) may still be present and their levels can be variable depending on the waves and wind. Beachgoers should use common sense and avoid contact with algal blooms that they may observe.
Esther Closed Regular beach monitoring has not yet begun. People may swim at their own risk. Blue-green algae (Cyanobacteria) may still be present and their levels can be variable depending on the waves and wind. Beachgoers should use common sense and avoid contact with algal blooms that they may observe.
Goodland County Park Closed Regular beach monitoring has not yet begun. People may swim at their own risk. Blue-green algae (Cyanobacteria) may still be present and their levels can be variable depending on the waves and wind. Beachgoers should use common sense and avoid contact with algal blooms that they may observe.
Governor Nelson State Park N/A
Hudson Closed Regular beach monitoring has not yet begun. People may swim at their own risk. Blue-green algae (Cyanobacteria) may still be present and their levels can be variable depending on the waves and wind. Beachgoers should use common sense and avoid contact with algal blooms that they may observe.
James Madison Open The Public Health Madison-Dane County Laboratory tested bacterial water quality at this beach on May 23, 2011. The results were acceptable. The water temperature was 58°F. Blue-green algae (Cyanobacteria) may be present and their levels can be variable depending on the waves and wind. Beachgoers should use common sense and avoid contact with algal blooms that they may observe.
Lake Kegonsa State Park N/A
Lake Mendota County Park Closed Regular beach monitoring has not yet begun. People may swim at their own risk. Blue-green algae (Cyanobacteria) may still be present and their levels can be variable depending on the waves and wind. Beachgoers should use common sense and avoid contact with algal blooms that they may observe.
Marshall Closed Regular beach monitoring has not yet begun. People may swim at their own risk. Blue-green algae (Cyanobacteria) may still be present and their levels can be variable depending on the waves and wind. Beachgoers should use common sense and avoid contact with algal blooms that they may observe.
Memorial Union Closed Regular beach monitoring has not yet begun. People may swim at their own risk. Blue-green algae (Cyanobacteria) may still be present and their levels can be variable depending on the waves and wind. Beachgoers should use common sense and avoid contact with algal blooms that they may observe.
Olbrich Open The Public Health Madison-Dane County Laboratory tested bacterial water quality at this beach on May 27, 2011. The results were acceptable. The water temperature was 55°F. Blue-green algae (Cyanobacteria) may be present and their levels can be variable depending on the waves and wind. Beachgoers should use common sense and avoid contact with algal blooms that they may observe.
Olin Open The Public Health Madison-Dane County Laboratory tested bacterial water quality at this beach on May 23, 2011. The results were acceptable. The water temperature was 57°F. Blue-green algae (Cyanobacteria) may be present and their levels can be variable depending on the waves and wind. Beachgoers should use common sense and avoid contact with algal blooms that they may observe.
Spring Harbor Closed Regular beach monitoring has not yet begun.People may swim at their own risk. The Public Health Madison-Dane County Laboratory tested bacterial water quality at this beach on August 24, 2010. The results were acceptable. The water temperature August 24th was 80°F. Blue-green algae (Cyanobacteria) may still be present and their levels can be variable depending on the waves and wind. Beachgoers should use common sense and avoid contact with algal blooms that they may observe.
Stoughton Mandt Park Pond N/A
Tenney Open The Public Health Madison-Dane County Laboratory tested bacterial water quality at this beach on May 23, 2011. The results were acceptable. The water temperature was 62°F. Blue-green algae (Cyanobacteria) may be present and their levels can be variable depending on the waves and wind. Beachgoers should use common sense and avoid contact with algal blooms that they may observe.
Verona Fireman’s Park N/A
Vilas Open The Public Health Madison-Dane County Laboratory tested bacterial water quality at this beach on May 23, 2011. The results were acceptable. The water temperature was 69°F. Blue-green algae (Cyanobacteria) may be present and their levels can be variable depending on the waves and wind. Beachgoers should use common sense and avoid contact with algal blooms that they may observe.
Warner Closed Regular beach monitoring has not yet begun. People may swim at their own risk.The Public Health Madison-Dane County Laboratory tested bacterial water quality at this beach on August 23, 2010. The results were acceptable. The water temperature August 23 was 79°F. Blue-green algae (Cyanobacteria) may still be present and their levels can be variable depending on the waves and wind. Beachgoers should use common sense and avoid contact with algal blooms that they may observe.
More info here.
When having an algae bloom or blanket weed in the particular area, the people should be alarm at the risk it may cause and just try to stay away from the affected area.