Rio Hondo below Whittier Narrows Dam water level

Name: Rio Hondo below Whittier Narrows Dam 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, Rio Hondo, California, United States

Directions

Low for mid-October

Water level

1.16ft Up 0.04 ft over the last 24 hours

Measured Oct 20, 2026, 02:30 PM PDT (50 min ago)

Flow: 0.0 cfs

History

7 days

Water level

What this means

The Rio Hondo below Whittier Narrows Dam is running below normal at 1.16 ft.

It has risen 0.04 ft over the past 24 hours. In the last month it has stayed between 1.05 ft and 1.20 ft.

Fall is often low-water season on rivers, and it usually takes a few days of steady rain to change that.

Compared with 5 years of daily readings for this time of year. How to read levels

Floating and fishing near Rio Hondo below Whittier Narrows Dam

Low water exposes gravel bars that make good wading access, but some boat ramps may be left high and dry.

Weather at the gauge

The forecast is not available right now.

Sunrise 07:02 AM Sunset 06:13 PM Daylight 11 hr, 11 min Waxing gibbous 72%

Map

Other gauges on the Rio Hondo

Gauge	Level	Compared with normal	24 hours	Distance
Rio Hondo above Whittier Narrows DamRiver gauge, Rio Hondo	2.9 cfs	Normal	+0.2 cfs	3.0 mi

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
San Gabriel River above Whittier Narrows DamRiver gauge, San Gabriel River	4.6 cfs	Low	+2.4 cfs	3.1 mi
Brea Creek below Brea Dam near FullertonRiver gauge, Brea Creek	0.1 cfs	Normal	±0	13 mi
Fullerton Creek below Fullerton Dam near BreaRiver gauge, Fullerton Creek	0.6 cfs	High	±0	14 mi
Arroyo Seco near PasadenaRiver gauge, Arroyo Seco	0.1 cfs	Low	±0	15 mi
San Antonio C A Riverside Drive near ChinoRiver gauge, San Antonio C A Riverside Drive	0.2 cfs	Normal	−0.1 cfs	20 mi
Chino C A Schaefer Avenue near ChinoRiver gauge, Chino C A Schaefer Avenue	0.6 cfs	Low	−0.2 cfs	21 mi
Santa Ana R A Santa AnaRiver gauge	0.0 cfs	Normal	±0	21 mi
Big Tujunga Creek below Hansen DamRiver gauge, Big Tujunga Creek	0.0 cfs	Normal	±0	24 mi

Questions and answers

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 Rio Hondo below Whittier Narrows Dam today?

On Oct 20, 2026, 02:30 PM PDT, the water level was 1.16 ft. Up 0.04 ft over the last 24 hours.

Is Rio Hondo below Whittier Narrows Dam rising or falling?

Up 0.04 ft over the last 24 hours.

Is the level of Rio Hondo below Whittier Narrows Dam normal?

Low for mid-October. Compared with 5 years of daily readings for this time of year.

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:11102300 (Agency page)
Coordinates: 34.01668, -118.08840 (WGS84)
Vertical datum: NAVD88
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	1.16 ft	2026-10-20 21:30	Provisional
Flow	0.0 cfs	2026-10-20 21:30	Provisional

Download

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How to cite

U.S. Geological Survey: Rio Hondo below Whittier Narrows Dam (usgs:11102300). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-states/california/rio-hondo-below-whittier-narrows-dam

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