Los Vaqueros Reservoir: toxic algae advisories
Los Vaqueros Reservoir, Contra Costa County. See all Contra Costa County waters.
What the state's records say
Visual observation, last posted Jul 6, 2023. 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 Los Vaqueros Reservoir
The state has an advisory on file for Los Vaqueros Reservoir (Visual observation), last posted Jul 6, 2023, 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 |
|---|---|
| Los Vaqueros Marina, by fishing dock | Reports on file, with no advisory level the state has classified. |
| north shore | Visual observation, last posted Jul 6, 2023. No all-clear recorded. |
Advisory history
Every advisory record the state has published for Los Vaqueros 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 |
|---|---|---|---|
| Apr 26, 2024 | Los Vaqueros Marina, by fishing dock | NA - refer to Report Details | End date recorded: Apr 26, 2024. Visual monitoring only-absent bloom |
| Apr 23, 2024 | Los Vaqueros Marina, by fishing dock | NA - refer to Report Details | Under investigation |
| Jul 6, 2023 | north shore | Visual observation | satellite based visual observation; Suspected bloom, investigation ongoing |
| Jul 6, 2023 | north shore | NA - refer to Report Details | Suspected bloom, investigation ongoing |
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.