Harmful Algal Bloom (HAB) Event Information
Bloom Code 25-3406-B2
Where
Water Body Cayuga Lake
Latitude and Longitude 42.784, -76.716339
Segment Lakeshore Segment Northeast 5: Frontenac Park to Ellis Point
County Cayuga
Extent Widespread
When
Bloom Reported September 15, 2025 10:30 AM
Bloom Sampled September 15, 2025 10:30 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: HAB is found in my zone as well as the zone to the north. Flat calm this morning, HAB started to develop early. HAB extends off shore for at least 500 feet, but thins out as it gets further from shore. It probably covers almost a mile of shore line north and south of Ellis Point.

Weather
Weather Sunny
Wind speed
Wind direction
Water Temp
Air Temp