Harmful Algal Bloom (HAB) Event Information
Bloom Code 25-3400-B19
Where
Water Body Cayuga Lake
Latitude and Longitude 42.5122, -76.54751
Segment Lakeshore Segment Southwest 4: Glenwood Point to Crowbar Point
County Tompkins
Extent Large Localized
When
Bloom Reported September 26, 2025 01:30 PM
Bloom Sampled September 26, 2025 01:30 PM
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

Community member reported: Deep HAB; greater depth than usual

Weather
Weather Sunny
Wind speed
Wind direction
Water Temp
Air Temp