Toxic algae in San Luis Obispo County, California
15 lakes and waterways have harmful algal bloom reports in California's official data.
Lakes with bloom history
| Lake | Years with reports | Most recent |
|---|---|---|
| Laguna Lake | 5 | 2022 |
| Lopez Lake | 2 | 2024 |
| Lopez Reservoir | 3 | 2021 |
| Atascadero Lake | 3 | 2026 |
| Lake Nacimiento | 1 | 2022 |
| Oso Flaco Creek | 2 | 2022 |
| Oso Flaco Lake | 2 | 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.
- Meadow Creek (2020)
- Pismo Creek (2018)
- Salinas River (2023)
- San Luis Obispo Creek (2023)
- Santa Margarita Lake (2022)
- Santa Margarita Reservoir (2021)
- Santa Monica Creek (2020)
- Whale Rock Reservoir (2021)
Source: California State Water Resources Control Board, official data. For current conditions see the California HABs Portal map.