Havasu Lake: toxic algae advisories
Havasu Lake, Riverside County. See all Riverside County waters.
What the state's records say
The state's latest record, from Aug 31, 2026, recommends no advisory.
Last advisory on file: Jun 29, 2026.
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 Havasu Lake
The state's latest record, from Aug 31, 2026, recommends no advisory. For Havasu 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 |
|---|---|
| Havasu landing resort jetty beach | The state's latest record, from Aug 31, 2026, recommends no advisory. |
| Havasu landing casino beach | The state's latest record, from Aug 31, 2026, recommends no advisory. |
| Havasu palms ghost mine cove | The state's latest record, from Aug 26, 2025, recommends no advisory. |
Advisory history
Every advisory record the state has published for Havasu 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 |
|---|---|---|---|
| Aug 31, 2026 | Havasu landing resort jetty beach | None | Updates from routine monitoring program-organization |
| Aug 31, 2026 | Havasu landing casino beach | None | Updates from routine monitoring program-organization |
| Jun 29, 2026 | Havasu landing casino beach | Caution | Updates from routine monitoring program-organization |
| May 18, 2026 | Havasu landing casino beach | Caution | Updates from routine monitoring program-organization |
| Aug 26, 2025 | Havasu palms ghost mine cove | None | Updates from routine monitoring program-organization |
| Aug 26, 2025 | Havasu landing resort jetty beach | None | Updates from routine monitoring program-organization |
| Jul 3, 2025 | Havasu palms ghost mine cove | None | Updates from routine monitoring program-organization |
| Jul 3, 2025 | Havasu landing resort jetty beach | None | Updates from routine monitoring program-organization |
| Jul 3, 2025 | Havasu landing casino beach | None | Updates from routine monitoring program-organization |
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.