Harmful Algal Bloom Report

Bloom Code 26-SE4-B7

Where

Water Body Cayuga Lake
Latitude and Longitude 42.5354922404559, -76.5470187831872
Segment Lakeshore Segment Southeast 4: Myers Park
County Tompkins
Extent Large Localized: The HAB is in a small area, but affects many properties, along a large segment of the shoreline, or in a specific region of the waterbody.

When

Bloom Reported September 30, 2026 05:35 PM
Bloom Sampled September 30, 2026 05:35 PM
Microscopic Examination October 02, 2026

What

Bloom Genera [1]

Microscopy Present Dominant
Dolichospermum
Microcystis

Bloom Chemistry

Total Microcystin and Nodularins (EPA 546) [2] 280.0 ug/L
Total Chlorophyll a 877.0 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

2026 PRIORITY ZONE: Lansing Harbor- identified by Tompkins County Whole Health as a sample-collection site. Volunteer reported: Slightly murky, calm