Tehama County: lake and river algae advisories
9 waters in Tehama County appear in the state's harmful algal bloom records. Waters whose latest record is an advisory come first.
| Water | Latest record |
|---|---|
| Antelope Creek | Caution advisory, last posted Sep 9, 2021. No all-clear recorded. |
| Battle Creek | Algal mat alert sign, last posted Sep 17, 2026. No all-clear recorded. |
| Black Butte Reservoir | Caution advisory, last posted Jul 1, 2019. No all-clear recorded. |
| Black Butte Reservoir Borrow Ponds | Caution advisory, last posted Jun 17, 2019. No all-clear recorded. |
| Carter Creek | Caution advisory, last posted Jul 1, 2021. No all-clear recorded. |
| Plum Creek | Caution advisory, last posted Aug 27, 2021. No all-clear recorded. |
| Unnamed creek | Algal mat alert sign, last posted Jun 5, 2025. No all-clear recorded. |
| Lake California | The state's latest record, from Jul 18, 2022, recommends no advisory. |
| Sacramento River | The state's latest record, from Jul 18, 2022, recommends no advisory. |