Harmful Algal Bloom Report

Bloom Code 25-3464-B1

Where

Water Body Cayuga Lake
Latitude and Longitude 42.49668, -76.53988
Segment Lakeshore Segment Southwest 3: Glenwood Point
County Tompkins
Extent Widespread or Lake-wide: The HAB is as far as you can see, and seems to affect the entire waterbody, or most or all of the shoreline.

When

Bloom Reported July 09, 2025 02:00 PM
Bloom Sampled July 09, 2025 02:00 PM
Microscopic Examination July 09, 2025

What

Bloom Genera [1]

Microscopy Present Dominant
Dolichospermum

Bloom Chemistry

Total Microcystin and Nodularins (EPA 546) [2] 0.15 ug/L
Total Chlorophyll a 631.0 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

Bloom Description

Volunteer Reports: Temp is warm and winds still. The lake temperature from Monday to Wednesday increased significantly. Both North and South, part of western shoreline bloom event. Extending both North and South, part of western shoreline bloom event.