Cache Creek: toxic algae advisories
Cache Creek, Yolo County. See all Yolo County waters.
What the state's records say
Danger advisory, last posted Sep 4, 2025. No all-clear recorded.
5 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 Cache Creek
The state has an advisory on file for Cache Creek (Danger advisory), last posted Sep 4, 2025, 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 |
|---|---|
| regional park near low water bridge | General awareness, last posted Sep 4, 2025. No all-clear recorded. |
| Camp Haswell | General awareness, last posted Sep 4, 2025. No all-clear recorded. |
| Nichols' Park | General awareness, last posted Sep 4, 2025. No all-clear recorded. |
| Cache Creek Nature Preserve - creek accesss point | The state's latest record, from Sep 16, 2024, recommends no advisory. |
| Cache Creek Regional Park Lower | Danger advisory, last posted Aug 30, 2024. No all-clear recorded. |
| Whitewater Adventures Company | Caution advisory, last posted Aug 9, 2024. No all-clear recorded. |
Advisory history
Every advisory record the state has published for Cache Creek, 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 4, 2025 | regional park near low water bridge | General awareness | Testing results below posting triggers |
| Sep 4, 2025 | Camp Haswell | General awareness | |
| Sep 4, 2025 | Nichols' Park | General awareness | Testing results below posting triggers |
| Aug 15, 2025 | Camp Haswell | Caution | |
| Aug 15, 2025 | regional park near low water bridge | Caution | |
| Aug 13, 2025 | regional park near low water bridge | Visual observation | |
| Aug 13, 2025 | Camp Haswell | Visual observation | |
| Sep 16, 2024 | Cache Creek Nature Preserve - creek accesss point | None | Testing results below posting triggers |
| Aug 30, 2024 | Cache Creek Regional Park Lower | Danger | Advisory based on visual and toxins |
| Aug 30, 2024 | Nichols' Park | Danger | Advisory based on visual and toxins |
| Aug 30, 2024 | Cache Creek Regional Park Lower | Danger | Advisory based on visual and toxins |
| Aug 9, 2024 | Cache Creek Regional Park Lower | Danger | Advisory based on visual and toxins |
| Aug 9, 2024 | Whitewater Adventures Company | Caution | Advisory based on visual and toxins |
| Aug 1, 2024 | Whitewater Adventures Company | Caution | Under investigation |
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.