Harmful Algal Bloom (HAB) Event Information
Bloom Code 23-3458-B8
Where
Water Body Cayuga Lake
Latitude and Longitude 42.920552, -76.730272
Segment Lakeshore Segment Northeast 1: Northern Marshes to Harris Park
County Cayuga
Extent Small Localized (few properties)
When
Bloom Reported September 20, 2023
Bloom Sampled September 20, 2023
Microscopic Examination September 25, 2023
What
Bloom Genera [1]
Microscopy Present Dominant
Microcystis
Pseudoanabaena
Bloom Chemistry
Total Chlorophyll a 154.0 ug/L
Total Microcystin and Nodularins (EPA 546) [2] 72.7 ug/L
[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

Bloom observed at the Beacon Bay Marina in Cayuga, NY