Active USGS

Helemano 6 Reservoir, Oahu, HI

Updated August 2, 2026 at 06:35:00 AM · Provisional · Site 213308158035601

Current conditions

Historical trends

Hourly measurements

Detailed readings by hour, organized by day

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Official USGS page: https://waterdata.usgs.gov/monitoring-location/USGS-213308158035601/ (may include cooperator information)