First Mallard Branch near Fairfield water level

Name: First Mallard Branch near Fairfield water level (U.S. Geological Survey)
Creator: U.S. Geological Survey
License: https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits

Estuary gauge, First Mallard Branch, California, United States

Directions

Latest reading

Water level

26.59ft Down 0.26 ft over the last 24 hours

Measured Oct 20, 2026, 04:15 PM PDT (51 min ago)

Flow: 111 cfs
Water temperature: 64 °F

History

7 days

Water level

What this means

The U.S. Geological Survey has First Mallard Branch near Fairfield at 26.59 ft. There is no published reference for this estuary yet, so we can't say whether that is high or low for the season.

It is still going down, by 0.26 ft over the past 24 hours. The 30-day range is 24.31 ft – 28.82 ft.

The water temperature at the gauge is 64 °F.

The agency publishes no normal range for this gauge yet, so we show the trend only. How to read levels

Weather at the gauge

The forecast is not available right now.

Sunrise 07:23 AM Sunset 06:23 PM Daylight 11 hr Waxing gibbous 72%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Napa River near NapaRiver gauge, Napa River	1.96 ft	Below flood stage	+0.01 ft	19 mi
Putah Creek near WintersRiver gauge, Putah Creek	119 cfs	Normal	−9.0 cfs	22 mi
Lake Berryessa and MonticelloLake	428.11 ft	High		22 mi
Sonoma C A Agua CalienteRiver gauge	0.9 cfs	Normal	−0.1 cfs	27 mi
San Ramon C A San RamonRiver gauge	0.0 cfs	Low	±0	29 mi
Novato C A NovatoRiver gauge	2.83 ft	Below flood stage	+0.07 ft	30 mi
Napa River near St HelenaRiver gauge, Napa River	0.47 ft	Below flood stage	±0	32 mi
Sonoma Creek A KenwoodRiver gauge	0.0 cfs	Low	±0	33 mi

Questions and answers

What is the water level of First Mallard Branch near Fairfield today?

On Oct 20, 2026, 04:15 PM PDT, the water level was 26.59 ft. Down 0.26 ft over the last 24 hours.

Is First Mallard Branch near Fairfield rising or falling?

Down 0.26 ft over the last 24 hours.

Is the level of First Mallard Branch near Fairfield normal?

The agency publishes no normal range for this gauge yet, so we show the trend only.

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:381142122015801 (Agency page)
Coordinates: 38.19489, -122.03281 (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	26.59 ft	2026-10-20 23:15	Provisional
Flow	111 cfs	2026-10-20 23:15	Provisional
Water temperature	64 °F	2026-10-20 23:15	Provisional

Download

Embed this gauge

Add a live card for this gauge to your website. It updates on its own and links back here.

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How to cite

U.S. Geological Survey: First Mallard Branch near Fairfield (usgs:381142122015801). Accessed October 21, 2026 via Nivelmap, https://nivelmap.com/en/united-states/california/first-mallard-branch-near-fairfield

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