Florida
Toxic algae in Volusia County lakes
22 lakes and waterways in Volusia County have harmful algal bloom reports in Florida's official data. The most recent entry is for Lake George: Florida's most recent sample from Lake George, on 17 December 2025 at Lake George - Center (LEO), found no visible bloom and no microcystin toxin was detected. Lake George and Lake Monroe 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.
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.
- Edgewater Canal 2021
- Halifax River 2021
- Holly Bluff Marina Canal 2019
- Lake George West Shore 2019
- Lake Harlan 2020
- Lake Theresa 2019
- Lake Victoria 2024
- Mosquito Lagoon 100Ft Offshore Of Spoil Island 2019
- Mosquito Lagoon Spoil Island 2019
- N Lake Talmadge 2018
- Northwest Cove Lake George 2019
- Tiger Bay Lake 2019
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.