Harmful Algal Bloom Report

Bloom Code 26-SW9-B4

Where

Water Body Cayuga Lake
Latitude and Longitude 42.574486012, -76.647360596
Segment Lakeshore Segment Southwest 9: Frontenac Point to Lively Run
County Seneca
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 August 18, 2026 09:30 AM
Bloom Sampled August 18, 2026 02:00 PM
Microscopic Examination August 19, 2026

What

Bloom Genera [1]

Microscopy Present Dominant
Dolichospermum
Microcystis

[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.

Bloom Description

2026 PRIORITY ZONE: The Spotted Sandpiper- identified by Seneca County Health Department as a sample-collection site. Volunteer reported: Very still morning - mirror like conditions. A slight breeze has kicked in from the South at 1-2 mph but it not being felt along the shoreline of this reach of the West shore. The highest bright green photos are in small protected areas. Out from those it is primarily green streaking in the water. I have checked about 50% of the zone and see the same condition everywhere and expect it extend the full length of Zone 9341. I anticipate it will dissipate quickly if the wind picks up.