Harmful Algal Bloom (HAB) Event Information
Bloom Code 25-3477-B4
Where
Water Body Cayuga Lake
Latitude and Longitude 42.5356, -76.543196
Segment Lakeshore Segment Southeast 4: Myers Park
County Tompkins
Extent Large Localized
When
Bloom Reported September 17, 2025 02:00 PM
Bloom Sampled September 17, 2025 02:00 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

Volunteer reported: Located all along the shoreline but in the open water past docks there is streaking throughout

Weather
Weather Sunny
Wind speed
Wind direction
Water Temp
Air Temp