Shasta County: lake and river algae advisories
13 waters in Shasta County appear in the state's harmful algal bloom records. Waters whose latest record is an advisory come first.
| Water | Latest record |
|---|---|
| Fall River Lake | Caution advisory, last posted Jul 13, 2026. No all-clear recorded. |
| Lake Britton | Caution advisory, last posted Aug 21, 2026. No all-clear recorded. |
| Oak St. Ponds (unnamed) | Caution advisory, last posted May 27, 2026. No all-clear recorded. |
| Sacramento River | Caution advisory, last posted Sep 7, 2021. No all-clear recorded. |
| Shasta Lake | Caution advisory, last posted Sep 9, 2016. No all-clear recorded. |
| Beartrap Creek | The state's latest record, from Aug 6, 2026, recommends no advisory. |
| Big Lake | The state's latest record, from Dec 10, 2019, recommends no advisory. |
| Clear Creek | The state's latest record, from Jun 30, 2021, recommends no advisory. |
| Hatchet Creek | The state's latest record, from Aug 6, 2026, recommends no advisory. |
| North Fork Battle Creek | The state's latest record, from Sep 24, 2026, recommends no advisory. |
| Tom Neal Creek | The state's latest record, from Aug 6, 2026, recommends no advisory. |
| Waydalmem Creek | Reports on file, with no advisory level the state has classified. |
| Whiskeytown Lake | The state's latest record, from Aug 28, 2023, recommends no advisory. |