Tuolumne County: lake and river algae advisories
15 waters in Tuolumne County appear in the state's harmful algal bloom records. Waters whose latest record is an advisory come first.
| Water | Latest record |
|---|---|
| Bass Pond | Caution advisory, last posted May 21, 2026. No all-clear recorded. |
| Clavey River | Caution advisory, last posted Oct 7, 2021. No all-clear recorded. |
| Hells Hollow Creek | Algal mat alert sign, last posted May 22, 2025. No all-clear recorded. |
| Jawbone Creek | Caution advisory, last posted Oct 7, 2021. No all-clear recorded. |
| Lake Tulloch | Caution advisory, last posted Jul 31, 2026. No all-clear recorded. |
| Lake Tulloch | Caution advisory, last posted Aug 11, 2026. No all-clear recorded. |
| Pine Mountain Lake | Caution advisory, last posted Aug 21, 2025. No all-clear recorded. |
| Rock Creek | Algal mat alert sign, last posted May 22, 2025. No all-clear recorded. |
| Tuolumne River | Caution advisory, last posted Aug 21, 2026. No all-clear recorded. |
| Unnamed creek | Algal mat alert sign, last posted May 22, 2025. No all-clear recorded. |
| Unnamed pond | Caution advisory, last posted Aug 28, 2024. No all-clear recorded. |
| Dry Meadow Creek | The state's latest record, from Jul 25, 2024, recommends no advisory. |
| New Melones Reservoir | The state's latest record, from Sep 2, 2020, recommends no advisory. |
| Parker Pass Creek | The state's latest record, from Jul 3, 2025, recommends no advisory. |
| Stanislaus River | The state's latest record, from Sep 2, 2020, recommends no advisory. |