Indian Creek Reservoir: toxic algae advisories
Indian Creek Reservoir, Alpine County. See all Alpine County waters.
What the state's records say
Danger advisory, last posted Sep 2, 2026. No all-clear recorded.
7 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: Toxins may be at levels that can seriously harm people and animals. Stay out of the water and keep children and pets away from the water and the shore.
Before you go, check the state's official algae page and any signs posted at the water.
Dogs at Indian Creek Reservoir
The state has an advisory on file for Indian Creek Reservoir (Danger advisory), last posted Sep 2, 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 |
|---|---|
| South End Nearest Entrance to Campground (ICR-CB04) | The state's latest record, from Sep 2, 2026, recommends no advisory. |
| Auxiliary Dam (ICR-CB03) | Caution advisory, last posted Sep 2, 2026. No all-clear recorded. |
| East Shore Dam near Shack (ICR-CB01) | Caution advisory, last posted Sep 2, 2026. No all-clear recorded. |
| Boat Launch (ICR-CB02) | The state's latest record, from May 20, 2026, recommends no advisory. |
| Boat Launch at Campground (ICR-CB05) | Visual observation, last posted Aug 27, 2024. No all-clear recorded. |
| Auxiliary Dam (ICR-CB03) | Warning advisory, last posted Oct 21, 2022. No all-clear recorded. |
| Boat Launch (ICR-CB02) | Caution advisory, last posted Oct 21, 2022. No all-clear recorded. |
| East Shore Dam near Shack (ICR-CB01) | Danger advisory, last posted Oct 21, 2022. No all-clear recorded. |
| South End Nearest Entrance to Campground (ICR-CB04) | Danger advisory, last posted Jun 29, 2022. No all-clear recorded. |
| Spot not described | The state's latest record, from Jun 30, 2021, recommends no advisory. |
| Indian Creek Reservoir | The state's latest record, from Dec 22, 2020, recommends no advisory. |
Advisory history
Every advisory record the state has published for Indian Creek 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 |
|---|---|---|---|
| Sep 2, 2026 | South End Nearest Entrance to Campground (ICR-CB04) | None | Advisory based on visual and toxins |
| Sep 2, 2026 | Auxiliary Dam (ICR-CB03) | Caution | Advisory based on visual and toxins |
| Sep 2, 2026 | East Shore Dam near Shack (ICR-CB01) | Caution | Advisory based on visual and toxins; Updates from routine monitoring program-organization |
| Sep 2, 2026 | East Shore Dam near Shack (ICR-CB01) | Caution | Advisory based on visual and toxins; Updates from routine monitoring program-organization |
| Jul 2, 2026 | South End Nearest Entrance to Campground (ICR-CB04) | None | Advisory based on visual and toxins; Testing results below posting triggers; Updates from routine monitoring program-organization |
| Jul 2, 2026 | Auxiliary Dam (ICR-CB03) | None | Advisory based on visual and toxins; Testing results below posting triggers; Updates from routine monitoring program-organization |
| Jul 2, 2026 | East Shore Dam near Shack (ICR-CB01) | None | Advisory based on visual and toxins; Updates from routine monitoring program-organization |
| May 20, 2026 | Auxiliary Dam (ICR-CB03) | None | Advisory based on visual and toxins; Testing results below posting triggers; Updates from routine monitoring program-organization |
| May 20, 2026 | South End Nearest Entrance to Campground (ICR-CB04) | None | Advisory based on visual and toxins; Testing results below posting triggers; Updates from routine monitoring program-organization |
| May 20, 2026 | Auxiliary Dam (ICR-CB03) | None | Advisory based on visual and toxins; Updates from routine monitoring program-organization |
| May 20, 2026 | Boat Launch (ICR-CB02) | None | Advisory based on visual and toxins; Updates from routine monitoring program-organization |
| Dec 30, 2025 | Auxiliary Dam (ICR-CB03) | Caution | Advisory based on visual and toxins; Updates from routine monitoring program-organization |
| Aug 29, 2025 | East Shore Dam near Shack (ICR-CB01) | None | Advisory based on visual and toxins; Updates from routine monitoring program-organization |
| Aug 29, 2025 | Auxiliary Dam (ICR-CB03) | None | Advisory based on visual and toxins; Updates from routine monitoring program-organization |
| Aug 20, 2025 | South End Nearest Entrance to Campground (ICR-CB04) | None | Updates from routine monitoring program-organization |
| Aug 20, 2025 | South End Nearest Entrance to Campground (ICR-CB04) | None | Updates from routine monitoring program-organization |
| Jun 27, 2025 | South End Nearest Entrance to Campground (ICR-CB04) | None | Advisory based on visual and toxins; Updates from routine monitoring program-organization |
| Jun 27, 2025 | Auxiliary Dam (ICR-CB03) | None | Advisory based on visual and toxins; Updates from routine monitoring program-organization |
| Jun 27, 2025 | Boat Launch (ICR-CB02) | None | Advisory based on visual and toxins; Updates from routine monitoring program-organization |
| May 21, 2025 | South End Nearest Entrance to Campground (ICR-CB04) | None | Updates from routine monitoring program-organization |
| May 21, 2025 | Auxiliary Dam (ICR-CB03) | Caution | Advisory based on visual and toxins; Updates from routine monitoring program-organization |
| May 21, 2025 | East Shore Dam near Shack (ICR-CB01) | None | Advisory based on visual and toxins; Updates from routine monitoring program-organization |
| Dec 13, 2024 | South End Nearest Entrance to Campground (ICR-CB04) | Caution | Updates from routine monitoring program-organization |
| Dec 13, 2024 | Auxiliary Dam (ICR-CB03) | Caution | Advisory based on visual and toxins; Updates from routine monitoring program-organization |
| Aug 27, 2024 | Boat Launch at Campground (ICR-CB05) | Visual observation | Floating/planktonic bloom observed |
| Aug 27, 2024 | Boat Launch at Campground (ICR-CB05) | Visual observation | Advisory based on visual and toxins; Updates from routine monitoring program-organization |
| Aug 27, 2024 | South End Nearest Entrance to Campground (ICR-CB04) | Visual observation | Floating/planktonic bloom observed |
| Aug 27, 2024 | Boat Launch at Campground (ICR-CB05) | Caution | Advisory based on visual and toxins; Updates from routine monitoring program-organization |
| Aug 27, 2024 | East Shore Dam near Shack (ICR-CB01) | Caution | Advisory based on visual and toxins; Updates from routine monitoring program-organization |
| Jun 25, 2024 | South End Nearest Entrance to Campground (ICR-CB04) | Caution | Advisory based on visual and toxins; Updates from routine monitoring program-organization |
| Jun 25, 2024 | Auxiliary Dam (ICR-CB03) | None | Advisory based on visual and toxins; Updates from routine monitoring program-organization |
| Jun 25, 2024 | East Shore Dam near Shack (ICR-CB01) | None | Advisory based on visual and toxins; Updates from routine monitoring program-organization |
| May 22, 2024 | South End Nearest Entrance to Campground (ICR-CB04) | Caution | Advisory based on visual and toxins; Updates from routine monitoring program-organization |
| May 22, 2024 | East Shore Dam near Shack (ICR-CB01) | None | Advisory based on visual and toxins; Updates from routine monitoring program-organization |
| May 22, 2024 | Auxiliary Dam (ICR-CB03) | None | Advisory based on visual and toxins; Updates from routine monitoring program-organization |
| May 22, 2024 | East Shore Dam near Shack (ICR-CB01) | None | Advisory based on visual and toxins; Lake-wide advisory; Updates from routine monitoring program-organization |
| May 22, 2024 | South End Nearest Entrance to Campground (ICR-CB04) | Caution | Advisory based on visual and toxins; Lake-wide advisory; Updates from routine monitoring program-organization |
| Apr 30, 2024 | South End Nearest Entrance to Campground (ICR-CB04) | None | Advisory based on visual and toxins; Lake-wide advisory; Updates from routine monitoring program-organization |
| Apr 30, 2024 | Auxiliary Dam (ICR-CB03) | None | Advisory based on visual and toxins; Lake-wide advisory; Updates from routine monitoring program-organization |
| Mar 14, 2024 | Boat Launch at Campground (ICR-CB05) | None | Advisory based on visual and toxins; Lake-wide advisory; Updates from routine monitoring program-organization |
| Mar 14, 2024 | South End Nearest Entrance to Campground (ICR-CB04) | None | Advisory based on visual and toxins; Lake-wide advisory; Updates from routine monitoring program-organization |
| Mar 14, 2024 | Auxiliary Dam (ICR-CB03) | None | Advisory based on visual and toxins; Lake-wide advisory; Updates from routine monitoring program-organization |
| Mar 14, 2024 | East Shore Dam near Shack (ICR-CB01) | None | Advisory based on visual and toxins; Lake-wide advisory; Updates from routine monitoring program-organization |
| Mar 14, 2024 | Boat Launch (ICR-CB02) | None | Advisory based on visual and toxins; Lake-wide advisory; Updates from routine monitoring program-organization |
| Dec 15, 2023 | East Shore Dam near Shack (ICR-CB01) | None | Advisory based on visual and toxins; Lake-wide advisory; Updates from routine monitoring program-organization |
| Dec 15, 2023 | Auxiliary Dam (ICR-CB03) | Caution | Advisory based on visual and toxins; Lake-wide advisory; Updates from routine monitoring program-organization |
| Dec 15, 2023 | Boat Launch (ICR-CB02) | Caution | Advisory based on visual and toxins; Lake-wide advisory; Updates from routine monitoring program-organization |
| Dec 15, 2023 | East Shore Dam near Shack (ICR-CB01) | Caution | Advisory based on visual and toxins; Lake-wide advisory; Updates from routine monitoring program-organization |
| Aug 29, 2023 | Boat Launch at Campground (ICR-CB05) | Danger | Advisory based on visual and toxins; Lake-wide advisory; Updates from routine monitoring program-organization |
| Aug 29, 2023 | Auxiliary Dam (ICR-CB03) | Danger | Advisory based on visual and toxins; Lake-wide advisory; Updates from routine monitoring program-organization |
| Aug 29, 2023 | East Shore Dam near Shack (ICR-CB01) | Danger | Advisory based on visual and toxins; Lake-wide advisory; Updates from routine monitoring program-organization |
| Aug 24, 2023 | South End Nearest Entrance to Campground (ICR-CB04) | Warning | Advisory based on visual and toxins; Lake-wide advisory; Updates from routine monitoring program-organization |
| Jul 26, 2023 | South End Nearest Entrance to Campground (ICR-CB04) | Warning | Advisory based on visual and toxins; Lake-wide advisory; Updates from routine monitoring program-organization |
| Jul 26, 2023 | East Shore Dam near Shack (ICR-CB01) | Warning | Advisory based on visual and toxins; Lake-wide advisory; Updates from routine monitoring program-organization |
| Jun 27, 2023 | Boat Launch (ICR-CB02) | Warning | Advisory based on visual and toxins; Lake-wide advisory; Updates from routine monitoring program-organization |
| Jun 27, 2023 | East Shore Dam near Shack (ICR-CB01) | Caution | Advisory based on visual and toxins; Lake-wide advisory; Updates from routine monitoring program-organization |
| Jun 27, 2023 | Boat Launch (ICR-CB02) | Caution | Advisory based on visual and toxins; Updates from routine monitoring program-organization |
| Jun 27, 2023 | East Shore Dam near Shack (ICR-CB01) | None | Advisory based on visual and toxins; Updates from routine monitoring program-organization |
| Jun 27, 2023 | South End Nearest Entrance to Campground (ICR-CB04) | Caution | Advisory based on visual and toxins |
| May 24, 2023 | South End Nearest Entrance to Campground (ICR-CB04) | Caution | Advisory based on visual and toxins; Lake-wide advisory |
| May 24, 2023 | Boat Launch (ICR-CB02) | Caution | Advisory based on visual and toxins; Lake-wide advisory; Updates from routine monitoring program-organization |
| May 24, 2023 | East Shore Dam near Shack (ICR-CB01) | Caution | Advisory based on visual and toxins; Lake-wide advisory; Updates from routine monitoring program-organization |
| Apr 21, 2023 | South End Nearest Entrance to Campground (ICR-CB04) | General awareness | Advisory based on visual and toxins |
| Apr 21, 2023 | Auxiliary Dam (ICR-CB03) | None | Advisory based on visual and toxins |
| Apr 21, 2023 | Boat Launch (ICR-CB02) | General awareness | Advisory based on visual and toxins |
| Apr 21, 2023 | East Shore Dam near Shack (ICR-CB01) | None | Advisory based on visual and toxins |
| Oct 21, 2022 | East Shore Dam near Shack (ICR-CB01) | Danger | Advisory based on visual and toxins |
| Oct 21, 2022 | Auxiliary Dam (ICR-CB03) | Warning | Advisory based on visual and toxins |
| Oct 21, 2022 | Boat Launch (ICR-CB02) | Caution | Advisory based on visual and toxins |
| Oct 21, 2022 | East Shore Dam near Shack (ICR-CB01) | Danger | Advisory based on visual and toxins |
| Aug 29, 2022 | Auxiliary Dam (ICR-CB03) | Danger | Advisory based on visual and toxins |
| Aug 29, 2022 | East Shore Dam near Shack (ICR-CB01) | Danger | Advisory based on visual and toxins |
| Aug 29, 2022 | Boat Launch (ICR-CB02) | Danger | Advisory based on visual and toxins |
| Aug 29, 2022 | East Shore Dam near Shack (ICR-CB01) | Danger | Advisory based on visual and toxins |
| Aug 29, 2022 | Auxiliary Dam (ICR-CB03) | Danger | Advisory based on visual and toxins |
| Aug 29, 2022 | Boat Launch (ICR-CB02) | Danger | Advisory based on visual and toxins |
| Jun 29, 2022 | South End Nearest Entrance to Campground (ICR-CB04) | Danger | Lake-wide advisory |
| Jun 29, 2022 | South End Nearest Entrance to Campground (ICR-CB04) | Danger | Advisory based on visual and toxins |
| Apr 13, 2022 | East Shore Dam near Shack (ICR-CB01) | Caution | Advisory based on visual and toxins |
| Apr 13, 2022 | Boat Launch (ICR-CB02) | Caution | Advisory based on visual and toxins |
| Apr 13, 2022 | Auxiliary Dam (ICR-CB03) | Warning | Advisory based on visual and toxins |
| Jun 30, 2021 | Spot not described | None | Testing results below posting triggers |
| Dec 22, 2020 | Indian Creek Reservoir | None | De-posting advisory. |
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.