Santa Fe Reservoir: toxic algae advisories
Santa Fe Reservoir, Los Angeles County. See all Los Angeles County waters.
What the state's records say
Caution advisory, last posted May 11, 2022. 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 Santa Fe Reservoir
The state has an advisory on file for Santa Fe Reservoir (Caution advisory), last posted May 11, 2022, 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 |
|---|---|
| near fishing dock and dam | The state's latest record, from Aug 28, 2026, recommends no advisory. |
| Spot not described | Caution advisory, last posted May 11, 2022. No all-clear recorded. |
Advisory history
Every advisory record the state has published for Santa Fe Reservoir, 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 28, 2026 | near fishing dock and dam | None | Updates from routine monitoring program-organization |
| Jun 24, 2026 | near fishing dock and dam | None | Advisory based on visual and toxins |
| May 14, 2026 | near fishing dock and dam | None | Advisory based on visual and toxins |
| Aug 20, 2025 | near fishing dock and dam | None | Advisory based on visual and toxins; Updates from routine monitoring program-organization |
| Jun 24, 2025 | near fishing dock and dam | None | Advisory based on visual and toxins; Updates from routine monitoring program-organization |
| May 12, 2025 | near fishing dock and dam | None | Advisory based on visual and toxins; Updates from routine monitoring program-organization |
| May 11, 2022 | Spot not described | Caution | Updates from routine monitoring program-organization |
| May 4, 2022 | Spot not described | Caution | Updates from routine monitoring program-organization |
| Feb 25, 2022 | Spot not described | Caution | Updates from routine monitoring program-organization |
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.