San Luis Obispo County: lake and river algae advisories
12 waters in San Luis Obispo County appear in the state's harmful algal bloom records. Waters whose latest record is an advisory come first.
| Water | Latest record |
|---|---|
| Atascadero Lake | Caution advisory, last posted Jul 16, 2024. No all-clear recorded. |
| Cypress Ridge Golf Course | Caution advisory, last posted Nov 19, 2021. No all-clear recorded. |
| Laguna Lake | Caution advisory, last posted Sep 4, 2026. No all-clear recorded. |
| Lake Nacimiento | General awareness, last posted Sep 4, 2026. No all-clear recorded. |
| Lopez Lake | Caution advisory, last posted Sep 4, 2026. No all-clear recorded. |
| Meadow Creek | Caution advisory, last posted Oct 14, 2020. No all-clear recorded. |
| Oso Flaco Creek | Caution advisory, last posted Sep 4, 2026. No all-clear recorded. |
| Oso Flaco Lake | Caution advisory, last posted Sep 4, 2026. No all-clear recorded. |
| Santa Margarita Lake | Caution advisory, last posted Dec 9, 2022. No all-clear recorded. |
| Salinas River | Reports on file, with no advisory level the state has classified. |
| Unnamed pond | Reports on file, with no advisory level the state has classified. |
| Whale Rock Reservoir | The state's latest record, from May 25, 2021, recommends no advisory. |