July 11, 2019

The Lake Erie Harmful Algal Bloom (HAB) Seasonal Forecast, produced by NOAA and released with Ohio Sea Grant, gives coastal managers, lake users, and drinking water facility operators a general sense of the potential severity of the upcoming bloom season. NOAA is forecasting a large bloom for 2019, with a severity index greater than 7. The index is based on the bloom’s biomass – the amount of harmful or toxic algae – over a sustained period.  Last year’s bloom had a severity of 3.6 and the 2017 bloom had a severity of 8.