Harmful Algal Bloom (HAB) Event Information
Bloom Code 25-3491-B2
Where
Water Body Cayuga Lake
Latitude and Longitude 42.572927511527, -76.6452675669521
Segment Lakeshore Segment Southwest 9: Frontenac Point to Lively Run
County Tompkins
Extent Large Localized
When
Bloom Reported September 24, 2025 02:30 PM
Bloom Sampled September 24, 2025 02:30 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

2025 PRIORITY SITE, Zone #3491: The Spotted Sandpiper- identified by Seneca County Health Department as a sample-collection site. No sample collected. Community Member Reports: Appears wind-blown against the shore, classic green paint appearance on the top of the water, easy winds from the SE.

Weather
Weather
Wind speed
Wind direction
Water Temp
Air Temp