Harmful Algal Bloom (HAB) Event Information
Bloom Code 25-3420-B2
Where
Water Body Cayuga Lake
Latitude and Longitude 42.5358, -76.544167
Segment Lakeshore Segment Southeast 4: Myers Park
County Tompkins
Extent Small Localized (few properties)
When
Bloom Reported September 18, 2025 02:45 PM
Bloom Sampled September 18, 2025 02:45 PM
Microscopic Examination September 18, 2025
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: Lansing Harbor- identified by Tompkins County Whole Health Volunteer reported: Calm, sunny, this was inside the harbor, outside lake water clear

Weather
Weather Sunny
Wind speed
Wind direction
Water Temp
Air Temp