Harmful Algal Bloom Report

Bloom Code 26-SE5-B3

Where

Water Body Cayuga Lake
Latitude and Longitude 42.478669022, -76.508296577
Segment Lakeshore Segment Southeast 5: Myers Park to East Shore 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 July 12, 2026 09:30 AM
Bloom Sampled
Microscopic Examination

Bloom Description

Volunteer reported: Unlike the potential Hab I reported on at same location 2 days ago, this one was the more characteristic green color, a ribbon of it ran down my entire beach and into the neighbors to the south. The water was very still. Within half an hour the wind picked up and the bloom entirely dissipated. I was planning therefore not to submit this. I am submitting it nearly 12 hours later (this evening) however, because while nothing like this showed up again during the day, I note the entire lake surface in my area has been an unusual green-blue color and walking in it this evening made my skin itch, it seems to be part of something big so thought you may want it as part of the record.