Oceanside Harbor: toxic algae advisories

Oceanside Harbor, San Diego County. See all San Diego County waters.

What the state's records say

The state recorded an end date of Dec 30, 2022.

Last advisory on file: Dec 2, 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 Oceanside Harbor

The state recorded an end date of Dec 30, 2022. For Oceanside Harbor, 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:

Each reported spot at Oceanside Harbor and its latest status
Spot	Status
at the harbor	The state recorded an end date of Dec 30, 2022.

Advisory history

Every advisory record the state has published for Oceanside Harbor, newest first. "None" is the state's record that no advisory was recommended on that date. "NA" records do not change a status.

Advisory records for Oceanside Harbor, newest first
Date	Spot	State's level	Notes
Dec 2, 2022	at the harbor	Caution	End date recorded: Dec 30, 2022. Marine bloom present (red tide)
Dec 2, 2022	at the harbor	Caution	Marine bloom present (red tide)

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.