Harmful Algal Bloom (HAB) Event Information
Bloom Code 25-3410-B9
Where
Water Body Cayuga Lake
Latitude and Longitude 42.715743, -76.710407
Segment Lakeshore Segment Northeast 9: Long Point State Park
County Cayuga
Extent Small Localized (few properties)
When
Bloom Reported October 12, 2025 11:15 AM
Bloom Sampled October 12, 2025 11:15 AM
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 #3410: Long Point State Park- identified by Cayuga County Health Department as a sample-collection site. No sample collected, observed by NYSP Staff. Staff reported: No HABs seen on 10/10 (was windy/wavy) but 10/11 had calmer water. The boat launch ramp area was extremely active on 10/11, Staff saw the HABs ballooning in the water. HAB was observed along the North and South shores, but completely separate. Reporting as two HABs.

Weather
Weather
Wind speed
Wind direction
Water Temp
Air Temp