Is Kaweah River safe? Toxic algae status
Tulare 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.
9
bloom reports since 2022
2 of 2
years with a bloom reported (2022–2023)
3
advisories recommended: 3 Caution, 0 Warning, 0 Danger
Year by year
Each box shows bloom reports logged that year, coloured by the highest advisory recommended.
Reports at Kaweah River are most often logged in June, July and September.
Recent reports
| Date | Location | Result |
|---|---|---|
| 28 September 2023 | Sequoia RV Park | Algal mat general awareness sign |
| 28 September 2023 | Kaweah River Private Dr, West of Dinely Dr. | Algal mat alert sign |
| 8 October 2022 | White Horse Inn | Algal mat alert sign |
| 25 July 2022 | Comfort Inn and Suites Sequoia Kings Canyon | Caution |
| 21 July 2022 | Marble Fork of Kaweah River at Potwisha Campground | Caution |
| 21 July 2022 | Ash Mountain Visitor Center | Caution |
| 19 July 2022 | Sequoia RV ranch on north fork Kaweah River | Bloom reported |
| 15 July 2022 | Approximately 1 mile from Dinely Bridge | Bloom reported |
| 24 June 2022 | Slick Rock Recreation Area | 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 Kaweah River safe to swim in?
The most recent entry in California's published data is from 28 September 2023: algal mat general awareness sign (Sequoia RV Park). Blooms have been recorded at Kaweah River in 2 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 Kaweah River get algae blooms?
In the state's records, reports are most often logged in June, July and September. 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.