Harmful Algal Bloom (HAB) Event Information
Bloom Code 25-3443-B4
Where
Water Body Cayuga Lake
Latitude and Longitude 42.72684, -76.760556
Segment Lakeshore Segment Northwest 1: Sheldrake Point to Deans Cove
County Seneca
Extent Widespread
When
Bloom Reported July 09, 2025 12:36 PM
Bloom Sampled July 09, 2025 12:36 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

Community Member Reports: I first saw the HAB on 7/8/25, and it seems to be larger today.

Weather
Weather
Wind speed
Wind direction
Water Temp
Air Temp