Harmful Algal Bloom (HAB) Event Information
Bloom Code 25-3478-B1
Where
Water Body Cayuga Lake
Latitude and Longitude 42.65543, -76.66253
Segment Lakeshore Segment Southeast 1: Elmwood Point to Lake Ridge Point
County Cayuga
Extent Widespread
When
Bloom Reported September 29, 2025 05:25 PM
Bloom Sampled September 29, 2025 05:25 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: The HAB extended for more than a mile on Monday, and covered both the 3478 and 3492 zones. This location is in the middle of what I could see from the kayak. Lake was extremely calm with bright sunshine.

Weather
Weather Sunny
Wind speed
Wind direction
Water Temp
Air Temp