Unnamed Lagoon: toxic algae advisories
Unnamed Lagoon, Marin County. See all Marin County waters.
What the state's records say
The state recorded an end date of Dec 31, 2022.
Last advisory on file: Jul 13, 2022.
That reflects what the state knew on that date. It is not a finding that the water is safe now: blooms can return within days, and many are never reported.
Before you go, check the state's official algae page and any signs posted at the water.
Dogs at Unnamed Lagoon
The state recorded an end date of Dec 31, 2022. For Unnamed Lagoon, that is not the same as an all-clear for today. Look at the water before your dog goes in: keep it out of green, blue-green or scummy water and away from mats on the shore.
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 |
|---|---|
| Contempo Marin Clubhouse 400 yosemite rd san rafael | The state recorded an end date of Dec 31, 2022. |
Advisory history
Every advisory record the state has published for Unnamed Lagoon, 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 |
|---|---|---|---|
| Jul 13, 2022 | Contempo Marin Clubhouse 400 yosemite rd san rafael | Caution | End date recorded: Dec 31, 2022. visual monitoring based advisory |
| Jul 13, 2022 | Contempo Marin Clubhouse 400 yosemite rd san rafael | Caution | visual monitoring based advisory |
| Jul 13, 2022 | Contempo Marin Clubhouse 400 yosemite rd san rafael | 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.