Harmful Algal Bloom (HAB) Event Information
Bloom Code 25-3482-B11
Where
Water Body Cayuga Lake
Latitude and Longitude 42.783065, -76.767517
Segment Lakeshore Segment Northwest 3: Deans Cove to Schuyler Creek
County Seneca
Extent Large Localized
When
Bloom Reported September 18, 2025 06:00 PM
Bloom Sampled September 18, 2025 06:00 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: 82 degrees, no wind, very sunny, has not rained for more than 7 days, no noticeable die-off, several very visible probably HABs along a 300 ft beach area, all disappeared by 8pm (about 2 hours after first observation)

Weather
Weather Sunny
Wind speed
Wind direction
Water Temp
Air Temp