Lake Almaden: toxic algae advisories
Lake Almaden, Santa Clara County. See all Santa Clara County waters.
What the state's records say
Danger advisory, last posted Nov 8, 2024. No all-clear recorded.
3 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 Lake Almaden
The state has an advisory on file for Lake Almaden (Danger advisory), last posted Nov 8, 2024, 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 |
|---|---|
| NE side | Caution advisory, last posted Nov 8, 2024. No all-clear recorded. |
| Lake Almaden | Caution advisory, last posted Aug 31, 2018. No all-clear recorded. |
| Lake Almaden | Danger advisory, last posted Feb 2, 2018. No all-clear recorded. |
Advisory history
Every advisory record the state has published for Lake Almaden, 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 |
|---|---|---|---|
| Nov 8, 2024 | NE side | Caution | Advisory based on visual and toxins |
| Oct 30, 2024 | NE side | Caution | Visual monitoring only-present bloom |
| Aug 31, 2018 | Lake Almaden | Caution | |
| Feb 2, 2018 | Lake Almaden | Danger |
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.