Scott River: toxic algae advisories
Scott River, Siskiyou County. See all Siskiyou County waters.
What the state's records say
Caution advisory, last posted Oct 13, 2026. 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: 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 Scott River
The state has an advisory on file for Scott River (Caution advisory), last posted Oct 13, 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 |
|---|---|
| Indian Scotty Campground | Algal mat alert sign, last posted Oct 13, 2026. No all-clear recorded. |
| Jones Beach | The state's latest record, from Nov 26, 2024, recommends no advisory. |
| Scott River below Isinglass Creek (105FC0053) | Algal mat alert sign, last posted Aug 27, 2024. No all-clear recorded. |
| near Jones Beach | The state's latest record, from Nov 4, 2021, recommends no advisory. |
| near Indian Scotty | The state's latest record, from Nov 4, 2021, recommends no advisory. |
| Scott River at Jones Beach River Access at beach | Caution advisory, last posted Oct 19, 2020. No all-clear recorded. |
| Scott River at Indian Scotty Campground at beach | Caution advisory, last posted Oct 19, 2020. No all-clear recorded. |
Advisory history
Every advisory record the state has published for Scott 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 13, 2026 | Indian Scotty Campground | Algal mat alert sign | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Sep 25, 2026 | Indian Scotty Campground | Algal mat alert sign | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Sep 14, 2026 | Indian Scotty Campground | Algal mat alert sign | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Sep 10, 2026 | Indian Scotty Campground | Algal mat alert sign | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Sep 10, 2026 | Indian Scotty Campground | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Aug 28, 2026 | Indian Scotty Campground | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Aug 13, 2026 | Indian Scotty Campground | None | Testing results below posting triggers; Updates from routine monitoring program-organization |
| Oct 8, 2025 | Indian Scotty Campground | Algal mat alert sign | Updates from routine monitoring program-organization |
| Sep 24, 2025 | Indian Scotty Campground | Algal mat alert sign | Updates from routine monitoring program-organization |
| Nov 26, 2024 | Jones Beach | None | De-posting advisory. |
| Aug 27, 2024 | Scott River below Isinglass Creek (105FC0053) | Algal mat alert sign | Updates from routine monitoring program-organization |
| Aug 13, 2024 | Jones Beach | Algal mat alert sign | Alert-high concentration toxins; Bottom/benthic bloom observed; Updates from routine monitoring program-organization |
| Aug 13, 2024 | Jones Beach | Algal mat alert sign | Alert-high concentration toxins; Bottom/benthic bloom observed; Updates from routine monitoring program-organization |
| Dec 30, 2022 | Indian Scotty Campground | None | End date recorded: Dec 30, 2022. De-posting advisory. |
| Dec 30, 2022 | Jones Beach | None | End date recorded: Dec 30, 2022. De-posting advisory. |
| Oct 6, 2022 | Jones Beach | Algal mat alert sign | Advisory based on visual and toxins; Bottom/benthic bloom observed |
| Oct 6, 2022 | Indian Scotty Campground | Algal mat alert sign | Advisory based on visual and toxins; Bottom/benthic bloom observed |
| Sep 21, 2022 | Indian Scotty Campground | Algal mat alert sign | Advisory based on visual and toxins |
| Sep 16, 2022 | Indian Scotty Campground | Algal mat alert sign | Advisory based on visual and toxins; Bottom/benthic bloom observed |
| Sep 16, 2022 | Jones Beach | Algal mat alert sign | Advisory based on visual and toxins; Bottom/benthic bloom observed |
| Nov 4, 2021 | near Jones Beach | None | Testing results below posting triggers |
| Nov 4, 2021 | near Indian Scotty | None | Testing results below posting triggers |
| Oct 19, 2020 | Scott River at Jones Beach River Access at beach | Caution | Advisory based on visual and toxins |
| Oct 19, 2020 | Scott River at Indian Scotty Campground at beach | Caution | Advisory based on visual and toxins |
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.