Toxic algae in Sacramento County, California
31 lakes and waterways have harmful algal bloom reports in California's official data.
Lakes with bloom history
| Lake | Years with reports | Most recent |
|---|---|---|
| Sacramento River | 5 | 2025 |
| Lake Natoma | 3 | 2024 |
| Camden Lake | 2 | 2022 |
| Mokelumne River | 2 | 2023 |
| Other River | 3 | 2020 |
| Laguna Creek | 3 | 2021 |
| Pocket Canal | 2 | 2026 |
| Sevenmile Slough | 1 | 2021 |
| Three Mile Slough | 3 | 2023 |
| Gibson Lake | 2 | 2026 |
| Sherman Lake | 2 | 2022 |
| South Fork Mokelumne River | 2 | 2022 |
| Stone Lakes | 2 | 2019 |
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.
- Arcade Lake (2018)
- Camden Lakes (2019)
- Cosumnes River (2016)
- Elk Grove Regional Park Lake (2026)
- Hinkle Creek (2026)
- Lower American River (2024)
- Mather Lake (2025)
- North Laguna Pond (2022)
- North Natomas Retention Basin (2025)
- Other Lake Or Reservoir (2021)
- Peace Pond (2025)
- Private Pond (2026)
- San Juan Reservoir (2024)
- Steamboat Slough (2020)
- Tanzanite Park Pond (2026)
- Turtle Pond (2026)
- Washington Lake (2018)
- Willow Creek (2025)
Source: California State Water Resources Control Board, official data. For current conditions see the California HABs Portal map.