Toxic algae in Riverside County, California
32 lakes and waterways have harmful algal bloom reports in California's official data.
Lakes with bloom history
| Lake | Years with reports | Most recent |
|---|---|---|
| Salton Sea | 5 | 2024 |
| Canyon Lake | 5 | 2025 |
| Lake Elsinore | 4 | 2025 |
| Lake Hemet | 3 | 2024 |
| Lake Perris | 3 | 2024 |
| Harveston Lake | 3 | 2026 |
| Mystic Lake | 3 | 2023 |
| Diamond Valley Lake | 2 | 2025 |
| Havasu Lake | 1 | 2025 |
| Lake Skinner | 3 | 2022 |
| Reflection Lake | 1 | 2024 |
| Santa Ana River | 1 | 2022 |
| Jenks Lake | 2 | 2025 |
| Lake Evans | 2 | 2024 |
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.
- Baker Pond (2022)
- Barton Creek (2026)
- Ben Williams River Wildlife Refuge (2022)
- Cole Creek (2024)
- Gunnerson Pond (2022)
- Indian Creek (2026)
- Lake Cahuilla (2024)
- Murrieta Creek (2023)
- North Fork San Jacinto Creek (2024)
- Other Lake Or Reservoir (2018)
- Plunge Creek (2019)
- Private Pond (2026)
- San Jacinto River (2024)
- Stone Creek (2026)
- Strawberry Creek (2024)
- Temecula Creek (2023)
- Temescal Creek (2024)
- Vail Lake (2024)
Source: California State Water Resources Control Board, official data. For current conditions see the California HABs Portal map.