Harmful Algal Bloom (HAB) Event Information
Bloom Code 25-3473-B9
Where
Water Body Cayuga Lake
Latitude and Longitude 42.62994, -76.68831
Segment Lakeshore Segment Southwest 9: Frontenac Point to Lively Run
County Cayuga
Extent Large Localized
When
Bloom Reported October 09, 2025 08:25 AM
Bloom Sampled October 09, 2025 08:25 AM
Microscopic Examination
What
Bloom Genera [1]
Microscopy Present Dominant

Bloom Chemistry
[1] Genera - plural of genus, a category of classification in biology that ranks between the family level and the species level. Because there are many different species of bacteria that are difficult to distinguish, it is more useful to classify bacteria by genus rather than species.
[2] Microcystin
Map of HAB event
Bloom Description

Volunteer reported: Cold night, currently 48 degrees. I actually am not sure if this is HABs It looks very different from what I usually see. This appears like a thick tan scum at the mouth of Lively Run creek. I would appreciate hearing back from you as to what you think it is.

Weather
Weather Sunny
Wind speed
Wind direction
Water Temp
Air Temp