Florida
Toxic algae in Lake County lakes
31 lakes and waterways in Lake County have harmful algal bloom reports in Florida's official data. The most recent entry is for Lake Yale: Florida's most recent sample from Lake Yale, on 8 September 2025 at Lake Yale - Center, found a bloom and no microcystin toxin was detected. Lake Yale, Lake Griffin and Lake Eustis and 3 more have had blooms in three or more years.
Lakes with bloom history
Newest report first. Each lake has its own page with the full history and what the results mean.
- Lake Yale Bloom seen
- Silver Glen Springs Bloom seen
- East Lake Bloom seen
- Lake Griffin Bloom seen
- Lake Eustis Bloom seen
- Lake Dorr No bloom seen
- Lake Umatilla Bloom seen
- Lake Minnehaha No bloom seen
- Lake Dora Bloom seen
- Harris Bayou No bloom seen
- Lake Beauclair No bloom seen
- Lake Harris Bloom seen
- Lake Carlton No bloom seen
- St Johns River Bloom seen
- Trout Lake Bloom seen
- Sawgrass Lake Bloom seen
- Lake Minneola No bloom seen
- Dead River Canal No bloom seen
- Trout Lake Canal Bloom seen
- Dead River Bloom seen
- Yalaha Canal Bloom seen
Other waterbodies with a report
These have one or two reports in a single year, which isn't enough history for a page of their own yet.
- Alexander Spring 2022
- Apopka Beauclair Canal 2024
- Blackwater Creek 2022
- East Crooked Lake 2024
- John’S Lake 2023
- Lake Denham 2020
- Lake Florence 2025
- Lake Hermosa 2022
- Lake Norris 2025
- Palatlakaha River 2023
Source: Florida Department of Environmental Protection (DEP), official data, checked 24 October 2026. For today's conditions see the DEP Algal Bloom Dashboard. No report doesn't mean a lake is safe: most water is only tested occasionally.