Kern River: toxic algae advisories
Kern River, Kern County. See all Kern County waters.
What the state's records say
Caution advisory, last posted Aug 31, 2026. No all-clear recorded.
2 reported spots here have an advisory with no all-clear recorded.
Reporting is voluntary, so the state may not have recorded an end even if conditions changed. Check posted signs and the official map.
What this level asks: Algae that can make toxins may be present. Keep people, children and pets away from algae and scum, and do not let pets drink the water.
Before you go, check the state's official algae page and any signs posted at the water.
Dogs at Kern River
The state has an advisory on file for Kern River (Caution advisory), last posted Aug 31, 2026, and no all-clear recorded. Keep your dog out of the water and away from scum on the shore until the state records an end.
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 |
|---|---|
| Keysville Beach, Kern River | Caution advisory, last posted Aug 31, 2026. No all-clear recorded. |
| KEYSVILLE SLIPPERY ROCK on Kern River, near Wofford Heights Blvd | The state's latest record, from Jan 3, 2018, recommends no advisory. |
| Spot not described | Caution advisory, last posted Sep 9, 2016. No all-clear recorded. |
Advisory history
Every advisory record the state has published for Kern 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 |
|---|---|---|---|
| Aug 31, 2026 | Keysville Beach, Kern River | Caution | Suspected illness reported |
| Jan 3, 2018 | KEYSVILLE SLIPPERY ROCK on Kern River, near Wofford Heights Blvd | None | |
| Sep 9, 2016 | Spot not described | Caution |
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.