Florida
Toxic algae in Martin County lakes
39 lakes and waterways in Martin County have harmful algal bloom reports in Florida's official data. The most recent entry is for St Lucie Estuary: Florida's most recent sample from St Lucie Estuary, on 14 May 2025, found no visible bloom and no microcystin toxin was detected.
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.
- Circle Bay Condos 2018
- Harbor St Canal 2019
- Indian River Lagoon 2024
- Lake Okechobee 2020
- Lake Okeechobee L004 2018
- Lake Okeechobee Lz30 2018
- Lake Okeechobee Nw Of Port Mayaca 2018
- Lake Okeechobee S308C 2017
- Lake Okeechobee S308C Lakeside 2018
- Lake Okeechobee Sw Of Port Mayaca 2018
- Lake Okeechobee_S308C 2018
- Loggerhead Marina St Lucie Estuary 2018
- Lz30 Lake Okeechobee 2018
- Middle Estuary 2018
- Middle Estuary North Shore 2018
- Mouth Of Frazier Creek 2018
- Mouth Of Poppolton Creek 2018
- Mouth Of Warner Creek 2018
- Ne Lake O 2019
- North Fork 2018
- Nw Fork Loxahatchee River 2017
- Poppolton Creek 2018
- Port Mayaca Lake Side 2018
- S Fork 2018
- Saint Lucie River North Fork 2018
- Se Warner Creek 2018
- Sf Canal 2018
- Sle N Fork 2018
- Sle South Fork 2018
- Slr Canal 2018
- South Fork 2018
- South Fork St Lucie River 2025
- St Lucie Estuary Frazier Creek 2018
- St Lucie Estuary Poppleton Creek 2018
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.