October 28, 2019

Bloom Forecast October 28 - November 4

The HAB season is nearly at its end. However, our models indicate that algal blooms can still occur at Detroit Lake. image-center Probability of occurrence (%) of different algal concentrations (left) and whether a toxin will be present in the water (right) in the next week (note that the toxin predictions are still highly experimental, and correspond to water at the lake before transport and treatment).

Latest lake conditions

Water samples were analyzed last week for nutrients and algal concentrations. In addition, information on the weather was collected. These data are presented below as a percentage of their historical maximum. image-center
Last sampled conditions at Detroit Lake, including the weather (temperature, wind, rain and sunlight) as well as the total concentration of algae (log transformed), nutrients (total phosphates and nitrates) and toxins (N/A denotes unavailable data).

Where we are in the season

Past bloom seasons have typically ended at this point in the year. As we move through to November we can expect the algae levels to decline as cooler weather arrives and sunlight diminishes. image-center Number of algal blooms since 2013, for each month in the year.