South Fork Trinity River: toxic algae advisories
South Fork Trinity River, Trinity County. See all Trinity County waters.
What the state's records say
Algal mat alert sign, last posted Jul 15, 2021. No all-clear recorded.
4 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: 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 South Fork Trinity River
The state has an advisory on file for South Fork Trinity River (Algal mat alert sign), last posted Jul 15, 2021, 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 |
|---|---|
| south of hwy 299 west bank | Algal mat alert sign, last posted Jul 15, 2021. No all-clear recorded. |
| at Marin Rd | Algal mat alert sign, last posted Jul 15, 2021. No all-clear recorded. |
| at hwy 299 east bank | Algal mat alert sign, last posted Jul 15, 2021. No all-clear recorded. |
| at Hwy 299 crossing | Algal mat alert sign, last posted Jul 15, 2021. No all-clear recorded. |
Advisory history
Every advisory record the state has published for South Fork Trinity 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 |
|---|---|---|---|
| Jul 15, 2021 | south of hwy 299 west bank | Algal mat alert sign | Bottom/benthic bloom observed |
| Jul 15, 2021 | at Marin Rd | Algal mat alert sign | Bottom/benthic bloom observed |
| Jul 15, 2021 | at hwy 299 east bank | Algal mat alert sign | Bottom/benthic bloom observed |
| Jul 15, 2021 | at Hwy 299 crossing | Algal mat alert sign | Bottom/benthic bloom observed |
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.