Santa Margarita River: toxic algae advisories
Santa Margarita River, San Diego County. See all San Diego County waters.
What the state's records say
General awareness, last posted Oct 19, 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: The state recorded an advisory of a type outside the Caution, Warning and Danger levels. Read the sign posted at the water.
Before you go, check the state's official algae page and any signs posted at the water.
Dogs at Santa Margarita River
The state has an advisory on file for Santa Margarita River (General awareness), last posted Oct 19, 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 |
|---|---|
| Sandia Creek Drive | The state's latest record, from Oct 16, 2023, recommends no advisory. |
| upstream of Sandia Creek Drive | General awareness, last posted Oct 19, 2022. No all-clear recorded. |
| Spot not described | The state's latest record, from Jul 1, 2021, recommends no advisory. |
Advisory history
Every advisory record the state has published for Santa Margarita 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 |
|---|---|---|---|
| Oct 16, 2023 | Sandia Creek Drive | None | Rec general awareness |
| Oct 6, 2023 | Sandia Creek Drive | None | Under investigation |
| Aug 29, 2023 | Sandia Creek Drive | Caution | Under investigation |
| Aug 25, 2023 | Sandia Creek Drive | Algal mat alert sign | Under investigation |
| Oct 19, 2022 | upstream of Sandia Creek Drive | General awareness | Posted general awareness |
| Aug 31, 2022 | upstream of Sandia Creek Drive | Caution | Advisory based on visual and toxins |
| Aug 29, 2022 | upstream of Sandia Creek Drive | None | End date recorded: Aug 29, 2022. visual monitoring based advisory |
| Aug 29, 2022 | upstream of Sandia Creek Drive | None | visual monitoring based advisory |
| Aug 29, 2022 | upstream of Sandia Creek Drive | None | Advisory based on visual and toxins |
| Aug 29, 2022 | upstream of Sandia Creek Drive | None | No cyano, other algae present. |
| Jun 29, 2022 | upstream of Sandia Creek Drive | None | No cyano, other algae present. |
| Jul 1, 2021 | Spot not described | 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.