Harmful Algal Bloom (HAB) Event Information
Bloom Code 26-NW6-B1
Where
Water Body Cayuga Lake
Latitude and Longitude 42.90048, -76.749819
Segment Lakeshore Segment Northwest 6: Cayuga Lake State Park
County Seneca
Extent Small Localized (few properties)
When
Bloom Reported June 27, 2026 07:00 PM
Bloom Sampled
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: North side of the boat launch area. She noted that it is localized to a 30'x30' area. She also noted that the water appears much greener than usual (outside of the areas of filamentous algae).

Weather
Weather
Wind speed
Wind direction
Water Temp
Air Temp