Lake levels › Hawaii

Wahiawa Reservoir water level today

Lower than usual for this time of year

815.35ft

feet above sea level ·

vs normal for Oct 10−13.8 ft
24 hours+0.58 ft
7 days+5.1 ft
30 days−19.0 ft
vs a year ago−7.0 ft

Is Wahiawa Reservoir low right now?

Wahiawa Reservoir was at 815.35 ft on October 10, 2026. That is 13.80 ft below the typical level for October 10 — lower than in 9 of 10 past years. Over the past week the lake has been rising about 0.72 ft a day.

Last 12 monthsDaily level Normal range (10–90% of past years)
804815826837849NovDecJanFebMarAprMayJunJulAugSepOct

Wahiawa Reservoir on Oct 10 in past years

2025822.3−7.0
2024825.7−10.3
2023828.1−12.7
2022828.1−12.7
2021829.3−14.0
2020822.4−7.0

Level on the same date each year, and how today compares.

Daily levels, last two weeks

DateLevel (ft)Change
Oct 10815.30+0.53
Oct 9814.77+4.61
Oct 8810.16+1.69
Oct 7808.47−0.68
Oct 6809.15−0.54
Oct 5809.69−0.55
Oct 4810.24−0.04
Oct 3810.28+1.73
Oct 2808.55+0.15
Oct 1808.40−1.21
Sep 30809.61−2.02
Sep 29811.63−2.13
Sep 28813.76−1.81
Sep 27815.57−1.39

Daily means of the operator's readings (midnight to midnight, local time).

About Wahiawa Reservoir

10-year range
807.3 ft (August 3, 2026) to 845.5 ft (March 20, 2026)
Data
U.S. Geological Survey — USGS 16210000
Datum
LMSL (gage datum 762.42 ft + gage height)

Lakes near Wahiawa Reservoir

Questions

Is Wahiawa Reservoir low right now?

Wahiawa Reservoir was at 815.35 ft on October 10, 2026. That is 13.80 ft below the typical level for October 10 — lower than in 9 of 10 past years. Over the past week the lake has been rising about 0.72 ft a day.

How often is the Wahiawa Reservoir level updated?

The operator reports every 15 minutes to an hour. This page refreshes several times a day; the time of the latest reading is shown next to the level.

Where does this data come from?

U.S. Geological Survey (USGS 16210000). Readings are provisional and can be revised.