Is Salton Sea safe? Toxic algae status
Imperial County, California. Harmful algal bloom (blue-green algae) reports from the California State Water Resources Control Board.
Data checked 24 October 2026. California data is updated daily.
64
bloom reports since 2018
8 of 9
years with a bloom reported (2018–2026)
37
advisories recommended: 32 Caution, 5 Warning, 0 Danger
Year by year
Each box shows bloom reports logged that year, coloured by the highest advisory recommended.
Reports at Salton Sea are most often logged in July, September and December.
Recent reports
| Date | Location | Result |
|---|---|---|
| 16 September 2026 | East pond along north berm | Bloom reported |
| 19 August 2026 | Species Conservation Habitat Brawley, CA | Bloom reported |
| 30 July 2026 | Species Conservation Habitat Ponds | Caution |
| 30 July 2026 | species conservation habitat ponds | Bloom reported |
| 22 July 2026 | — | Bloom reported |
| 26 February 2026 | Southern lake | Caution |
| 13 August 2024 | Causeway east of New River outlet | Caution |
| 30 July 2024 | Causeway | Algal mat alert sign |
| 24 April 2024 | USGS2 | Bloom reported |
| 23 April 2024 | USGS3 | Bloom reported |
| 23 March 2024 | Bombay Beach | Bloom reported |
| 1 January 2023 | West Shores Beach | Bloom reported |
What the results mean
Algae may be present. Stay away from scum and discoloured water, and keep pets and livestock from drinking it.
Toxins at higher levels. No swimming, and keep pets and children well away from the water.
High toxin levels. Stay out of the water and off the shoreline.
Dogs and toxic algae
Dogs face the greatest risk because they swallow water and lick algae off their fur. If a bloom has been reported, keep dogs out of the water and away from scum on the shore. If your dog swims in water that might have algae, rinse it with clean water straight away and call a vet if it seems unwell.
Common questions
Is Salton Sea safe to swim in?
The most recent entry in California's published data is from 16 September 2026: bloom reported (East pond along north berm). Blooms have been recorded at Salton Sea in 8 different years, so treat green, scummy or discoloured water with caution. For current conditions, check the California HABs Portal map and posted signs.
When does Salton Sea get algae blooms?
In the state's records, reports are most often logged in July, September and December. Blooms are most likely in warm, calm weather, but they can appear at other times of year.
Source: California State Water Resources Control Board, official data. This page is independent and not affiliated with the State of California.