Chowchilla River: toxic algae advisories
Chowchilla River, Madera County. See all Madera County waters.
What the state's records say
The state's latest record, from Jan 1, 2023, recommends no advisory.
That reflects what the state knew on that date. It is not a finding that the water is safe now: blooms can return within days, and many are never reported.
Before you go, check the state's official algae page and any signs posted at the water.
Dogs at Chowchilla River
The state's latest record, from Jan 1, 2023, recommends no advisory. For Chowchilla River, that is not the same as an all-clear for today. Look at the water before your dog goes in: keep it out of green, blue-green or scummy water and away from mats on the shore.
Reported spots
The state records each report at a spot, such as a beach or a boat ramp. Each spot's latest deciding record:
| Spot | Status |
|---|---|
| at the Raymond Bridge | The state's latest record, from Jan 1, 2023, recommends no advisory. |
| at the Raymond Bridge | The state's latest record, from Dec 16, 2022, recommends no advisory. |
| at the Raymond Bridge | The state's latest record, from Nov 10, 2021, recommends no advisory. |
Advisory history
Every advisory record the state has published for Chowchilla River, newest first. "None" is the state's record that no advisory was recommended on that date. "NA" records do not change a status.
| Date | Spot | State's level | Notes |
|---|---|---|---|
| Jan 1, 2023 | at the Raymond Bridge | None | Updates from routine monitoring program-organization |
| Dec 16, 2022 | at the Raymond Bridge | None | No cyano bloom w/testing; Updates from routine monitoring program-organization |
| Nov 9, 2022 | at the Raymond Bridge | None | No cyano bloom w/testing; Updates from routine monitoring program-organization |
| Oct 10, 2022 | at the Raymond Bridge | None | No cyano bloom w/testing; Updates from routine monitoring program-organization |
| Oct 5, 2022 | at the Raymond Bridge | None | No cyano bloom w/testing; Updates from routine monitoring program-organization |
| Aug 30, 2022 | at the Raymond Bridge | None | No cyano bloom w/testing; Updates from routine monitoring program-organization |
| Aug 30, 2022 | at the Raymond Bridge | None | No cyano bloom w/testing |
| Jun 22, 2022 | at the Raymond Bridge | None | Updates from routine monitoring program-organization |
| Feb 9, 2022 | at the Raymond Bridge | None | Updates from routine monitoring program-organization |
| Nov 10, 2021 | at the Raymond Bridge | None | Testing results below posting triggers |
Source
Advisory data: California State Water Resources Control Board, Freshwater Harmful Algal Bloom Program, via data.ca.gov (public domain). Advisories are recommendations; reporting is voluntary and incomplete. The state's data. An advisory ends only when the state records a later "None" (no advisory recommended) at the same spot, or an end date. A blank end date is unknown.