Harper Creek: toxic algae advisories
Harper Creek, San Diego County. See all San Diego County waters.
What the state's records say
The state's latest record, from Jul 25, 2023, 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 Harper Creek
The state's latest record, from Jul 25, 2023, recommends no advisory. For Harper Creek, 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 |
|---|---|
| Harper Creek about 0.5 miles above Sweetwater River | The state's latest record, from Jul 25, 2023, recommends no advisory. |
Advisory history
Every advisory record the state has published for Harper Creek, 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 25, 2023 | Harper Creek about 0.5 miles above Sweetwater River | None | Rec algal mat general awareness |
| Jul 25, 2023 | Harper Creek about 0.5 miles above Sweetwater River | None | Under investigation |
| Jun 28, 2023 | Harper Creek about 0.5 miles above Sweetwater River | None | 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.