Kaukonahua Str at Waialua, Oahu water level

Name: Kaukonahua Str at Waialua, Oahu water level (U.S. Geological Survey)
Creator: U.S. Geological Survey
License: https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits

River gauge, Kaukonahua Str, Hawaii, United States

Directions

Below flood stage

Water level

16.85ft Up 0.16 ft over the last 24 hours

Measured Oct 20, 2026, 04:50 PM HST (22 min ago)

Flow: 42.9 cfs

History

7 days

Water level Minor flood stage

What this means

The Kaukonahua Str at Waialua, Oahu is at 16.85 ft, in the normal range.

It is 11.15 ft below the flood stage of 28.00 ft.

It has risen 0.16 ft over the past 24 hours. There is still 11.15 ft of room before flood stage. In the last month it has stayed between 16.67 ft and 16.97 ft.

Fall is often low-water season on rivers, until steadier rain returns.

Judged against the official flood stage for this gauge. How to read levels

Floating and fishing near Kaukonahua Str at Waialua, Oahu

Normal flows mean predictable rapids and good access at most put-ins.

Flood stage here is 28.00 ft, 11.15 ft above the current reading. Beyond it, the National Weather Service also defines moderate and major flood stages.

What happens at each level

28.00 ft: Properties in Otake Camp in Waialua becoming inundated.
16.85 ft: Right now

Impact statements from the U.S. National Weather Service.

Weather at the gauge

Rain in the last 3 days: 0.07 in. Rain that falls upstream can take hours or days to show up at a river gauge.

19 Mon 83° 74° 0.03 in, 81% Wind 14 mph

20 Tue 84° 74° 0.02 in, 75% Wind 15 mph

21 Wed 85° 73° – Wind 12 mph

22 Thu 85° 71° 0.10 in, 56% Wind 8 mph

23 Fri 86° 68° – Wind 12 mph

24 Sat 83° 71° – Wind 14 mph

25 Sun 80° 71° 0.01 in, 34% Wind 10 mph

Forecast: Open-Meteo

Sunrise 06:31 AM Sunset 06:04 PM Daylight 11 hr, 33 min Waxing gibbous 73%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Kemoo 5 Reservoir, OahuReservoir	14.65 ft	Normal	+0.03 ft	1.3 mi
Helemano 6 Reservoir, OahuReservoir	22.30 ft	Low	−0.55 ft	3.6 mi
Makaha Str near Makaha, OahuRiver gauge, Makaha Str	1.26 ft	Below flood stage	−0.01 ft	5.8 mi
Wahiawa Ditch at Wahiawa, OahuCanal gauge, Wahiawa Ditch	10.1 cfs	Normal	±0	6 mi
Kaukonahua Stream below Wahiawa Reservoir, OahuRiver gauge, Kaukonahua Stream	51.3 cfs	Normal	+18.4 cfs	6 mi
Kamananui Str at Maunawai, OahuRiver gauge, Kamananui Str	2.37 ft	Below flood stage	+0.09 ft	6 mi
Upper Helemano Reservoir near Wahiawa, OahuReservoir, Upper Helemano Reservoir	42.78 ft	Very high	−0.09 ft	7 mi
Wahiawa Reservoir at Spillway at Wahiawa, OahuReservoir, Wahiawa Reservoir	55.79 ft	Very low	+0.69 ft	7 mi

Questions and answers

What is flood stage for the Kaukonahua Str at Waialua, Oahu?

The official flood stage is 28.00 ft. The level is currently 11.15 ft below it.

Is gage height the same as water depth?

No. Gage height is measured from a fixed reference point chosen by the agency, so a reading of 10 ft does not mean the river is 10 ft deep.

What is the water level of Kaukonahua Str at Waialua, Oahu today?

On Oct 20, 2026, 04:50 PM HST, the water level was 16.85 ft. Up 0.16 ft over the last 24 hours.

Is Kaukonahua Str at Waialua, Oahu rising or falling?

Up 0.16 ft over the last 24 hours. Up 0.13 ft over the last 7 days.

Is the level of Kaukonahua Str at Waialua, Oahu normal?

Below flood stage. Judged against the official flood stage for this gauge.

How often is this data updated?

The U.S. Geological Survey publishes a new reading every 15 minutes. This page refreshes within minutes of each update.

Where does this data come from?

The values come directly from the U.S. Geological Survey, the official operator of this gauge, and are in the public domain. We do not estimate or model live values.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: U.S. Geological Survey
Station code: usgs:16210500 (Agency page)
Coordinates: 21.56530, -158.12037 (WGS84)
Vertical datum: LMSL
Update interval: every 15 minutes
Licence: Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision

Published series

Parameter	Last value	Time (UTC)	Quality
Water level	16.85 ft	2026-10-21 02:50	Provisional
Flow	42.9 cfs	2026-10-21 02:50	Provisional

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How to cite

U.S. Geological Survey: Kaukonahua Str at Waialua, Oahu (usgs:16210500). Accessed October 21, 2026 via Nivelmap, https://nivelmap.com/en/united-states/hawaii/kaukonahua-str-at-waialua-oahu

How we check values

Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.

Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer