Silver Lake: toxic algae advisories
Silver Lake, Mono County. See all Mono County waters.
What the state's records say
The state's latest record, from Sep 2, 2026, recommends no advisory.
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 Silver Lake
The state's latest record, from Sep 2, 2026, recommends no advisory. For Silver Lake, 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 |
|---|---|
| Marina | The state's latest record, from Sep 2, 2026, recommends no advisory. |
| Silver Lake marina | The state's latest record, from Aug 29, 2022, recommends no advisory. |
| Spot not described | The state's latest record, from Jun 24, 2021, recommends no advisory. |
Advisory history
Every advisory record the state has published for Silver Lake, 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 | Marina | None | Advisory based on visual and toxins |
| Jun 18, 2026 | Marina | None | Advisory based on visual and toxins |
| Oct 23, 2025 | Marina | None | Advisory based on visual and toxins |
| Aug 29, 2025 | Marina | None | Advisory based on visual and toxins |
| Jun 25, 2025 | Marina | None | Advisory based on visual and toxins |
| Oct 4, 2024 | Marina | None | Advisory based on visual and toxins; No cyano bloom w/testing; Updates from routine monitoring program-organization |
| Aug 22, 2024 | Marina | None | Advisory based on visual and toxins; No cyano bloom w/testing; Updates from routine monitoring program-organization |
| Jun 27, 2024 | Marina | None | No cyano bloom w/testing; Updates from routine monitoring program-organization |
| Aug 22, 2023 | Marina | None | No cyano bloom w/testing; Updates from routine monitoring program-organization |
| Jun 27, 2023 | Marina | None | No cyano bloom w/testing; Updates from routine monitoring program-organization |
| Aug 29, 2022 | Silver Lake marina | None | Updates from routine monitoring program-organization |
| Aug 17, 2022 | Silver Lake marina | None | visual monitoring based advisory |
| Jun 29, 2022 | Silver Lake marina | None | Updates from routine monitoring program-organization |
| May 26, 2022 | Silver Lake marina | None | Updates from routine monitoring program-organization |
| Jun 24, 2021 | Spot not described | None | Testing results below posting triggers |
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.