Harmful Algal Bloom (HAB) Event Information
Bloom Code
25-3441-B3
| Where | |
|---|---|
| Water Body | Cayuga Lake |
| Latitude and Longitude | 42.66555, -76.69901 |
| Segment | Lakeshore Segment Southwest 10: Lively Run to Sheldrake Point |
| County | Seneca |
| Extent | Small Localized (few properties) |
When
| Bloom Reported | September 29, 2025 03:30 PM |
| Bloom Sampled | September 29, 2025 03:30 PM |
| Microscopic Examination | September 30, 2025 |
What
Bloom Genera [1]
| Microscopy | Present | Dominant |
|---|---|---|
| Microcystis |
Bloom Chemistry
| Total Microcystin and Nodularins (EPA 546) [2] | 61.2 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
[2] Microcystin
Map of HAB event
Bloom Description
2025 PRIORITY SITE: Sheldrake Point- identified by Seneca County Health Department as a sample-collection site. Reported by both a community member and volunteer. Comments: Sunny afternoon, 70°F, lake very still and calm like glass. Chlorophyll-a analysis was unable to be completed on this sample due to partial freezing during sample transport (blue ice pack).
Weather
| Weather | Sunny |
| Wind speed | |
| Wind direction | |
| Water Temp | |
| Air Temp |
