Berkeley Aquatic Park — North Lagoon

east bay

Recent samples within safe ranges.

Last sampled: Mar 12, 2026 (55 days ago)

0.33 in of rain in the last 72 hours may have changed water quality since the last sample was taken.

How is this decided?

Map

Recent Rainfall

48h rain (advisory ≥ 1.00 in) 0.00 in
72h rain (advisory ≥ 0.50 in) 0.33 in

Bacteria Readings

IndicatorLatest30-day geomeanEPA limit

90-Day Enterococcus History

Showing the indicator with the most recent readings; agencies sometimes switch which one they report.

Safe Caution Unsafe Unknown

Nearby Swim Spots

Data from: City of Berkeley — Aquatic Park Water Quality (Public Domain), Open-Meteo — Precipitation (CC-BY 4.0)

Information provided for general guidance only. Conditions change rapidly. Swim at your own risk. Not medical advice.