Madera County: lake and river algae advisories
14 waters in Madera County appear in the state's harmful algal bloom records. Waters whose latest record is an advisory come first.
| Water | Latest record |
|---|---|
| Greenhill Estates | Danger advisory, last posted Feb 2, 2022. No all-clear recorded. |
| H.V. Eastman Lake | Danger advisory, last posted Aug 25, 2026. No all-clear recorded. |
| Hensley Lake | Caution advisory, last posted Aug 25, 2026. No all-clear recorded. |
| Middle Fork San Joaquin River | Algal mat alert sign, last posted Sep 27, 2022. No all-clear recorded. |
| San Joaquin River | Caution advisory, last posted Sep 10, 2021. No all-clear recorded. |
| Ash Slough Bypass Canal | The state's latest record, from Mar 2, 2022, recommends no advisory. |
| Beasore Creek | The state's latest record, from Jul 1, 2021, recommends no advisory. |
| Chowchilla River | The state's latest record, from Jan 1, 2023, recommends no advisory. |
| Corrine Lake | Reports on file, with no advisory level the state has classified. |
| Fresno River | The state's latest record, from Jun 22, 2022, recommends no advisory. |
| Indian Lakes | The state's latest record, from Aug 26, 2020, recommends no advisory. |
| Manzanita Lake | The state's latest record, from Dec 24, 2018, recommends no advisory. |
| Nedler Creek | The state's latest record, from Jun 30, 2021, recommends no advisory. |
| Willow Creek | The state's latest record, from Jul 1, 2021, recommends no advisory. |