Toxic algae in Mariposa County, California
8 lakes and waterways have harmful algal bloom reports in California's official data.
Lakes with bloom history
| Lake | Years with reports | Most recent |
|---|---|---|
| Merced River | 3 | 2022 |
Other waterbodies with a report
These have one or two reports in a single year, so there isn't enough history for a page of their own yet.
- East Fork Chowchilla River (2023)
- Lake Mcclure (2024)
- Lake Mcswain (2026)
- North Crane Creek (2025)
- South Fork Merced River (2022)
- Tenaya Creek (2021)
- Yosemite Creek (2025)
Source: California State Water Resources Control Board, official data. For current conditions see the California HABs Portal map.