Santa Ana River below Prado Dam water level

Name: Santa Ana River below Prado 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, Santa Ana River, California, United States

Directions

Normal for mid-October

Water level

2.44ft Steady over the last 24 hours

Measured Oct 19, 2026, 11:45 PM PDT (44 min ago)

Flow: 140 cfs
Water temperature: 72 °F

History

7 days

Water level

What this means

The gauge at Santa Ana River below Prado Dam reads 2.44 ft, a normal level for mid-October.

It has barely moved over the past 24 hours. Over the past 30 days it has moved between 2.30 ft and 3.66 ft.

Fall is often low-water season on rivers, until steadier rain returns. The water temperature at the gauge is 72 °F.

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

What the stage means on the water

A normal level is usually prime time for floating and wade fishing, as long as the weather holds upstream.

Weather at the gauge

The forecast is not available right now.

Sunrise 07:00 AM Sunset 06:12 PM Daylight 11 hr, 12 min First quarter 66%

Map

Other gauges on the Santa Ana River

Gauge	Level	Compared with normal	24 hours	Distance
Santa Ana River near Mentone (River Only)River gauge, Santa Ana River	0.1 cfs	Normal	±0	35 mi

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Temescal Creek above Main St A CoronaRiver gauge, Temescal Creek	0.0 cfs	Very low	±0	4.7 mi
Cucamonga Creek near Mira LomaRiver gauge, Cucamonga Creek	1,560 cfs	Very high	−190.0 cfs	7 mi
Chino C A Schaefer Avenue near ChinoRiver gauge, Chino C A Schaefer Avenue	0.6 cfs	Low	−0.2 cfs	10 mi
San Antonio C A Riverside Drive near ChinoRiver gauge, San Antonio C A Riverside Drive	0.5 cfs	Normal	±0	11 mi
Coldwater Canyon Creek near CoronaRiver gauge, Coldwater Canyon Creek	0.4 cfs	Low	±0	12 mi
Santa Ana R A Mwd CrossingRiver gauge	44.0 cfs	Normal	+30.4 cfs	13 mi
Fullerton Creek below Fullerton Dam near BreaRiver gauge, Fullerton Creek	0.6 cfs	High	+0.1 cfs	14 mi
Brea Creek below Brea Dam near FullertonRiver gauge, Brea Creek	0.1 cfs	Low	±0	16 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 Santa Ana River below Prado Dam today?

On Oct 19, 2026, 11:45 PM PDT, the water level was 2.44 ft. Steady over the last 24 hours.

Is Santa Ana River below Prado Dam rising or falling?

Steady over the last 24 hours.

Is the level of Santa Ana River below Prado Dam normal?

Normal 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:11074000 (Agency page)
Coordinates: 33.88335, -117.64533 (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	2.44 ft	2026-10-20 06:45	Provisional
Flow	140 cfs	2026-10-20 06:45	Provisional
Water temperature	72 °F	2026-10-07 17:45	Provisional

Download

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How to cite

U.S. Geological Survey: Santa Ana River below Prado Dam (usgs:11074000). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-states/california/santa-ana-river-below-prado-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