Toxic algae in Modoc County, California
9 lakes and waterways have harmful algal bloom reports in California's official data.
Lakes with bloom history
| Lake | Years with reports | Most recent |
|---|---|---|
| Emerson Creek | 2 | 2026 |
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.
- Big Sage Reservoir (2023)
- Donovan Reservoir (2023)
- Fitzhugh Creek (2021)
- Mill Creek (2026)
- Owl Creek (2026)
- Turner Creek (2024)
- Twelvemile Creek (2026)
- West Valley Reservoir (2026)
Source: California State Water Resources Control Board, official data. For current conditions see the California HABs Portal map.