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Threemile Slough near Rio Vista water level

River gauge, Threemile Slough, California, United States

Directions

Right now

Latest reading

Water level

5.06ft Down 0.89 ft over the last 24 hours

Flow
971 cfs
4 5 6 8

History

History
46ftOct 16Oct 17Oct 18Oct 19Oct 2146ftOct 16Oct 18Oct 21
Water level

What this means

Threemile Slough near Rio Vista reads 5.06 ft as of Oct 20, 2026, 08:15 PM PDT. The agency publishes no normal range or warning level for this river yet, so there is nothing to judge the number against.

It has dropped 0.89 ft over the past 24 hours. In the last month it has stayed between 3.10 ft and 6.61 ft.

Over the past seven days the change adds up to −0.27 ft.

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

Floating and fishing near Threemile Slough near Rio Vista

Use the recent trend as your guide, and ask locally which gage height makes for a good float.

Weather at the gauge

The forecast is not available right now.

Sunrise 07:22 AM Sunset 06:22 PM Daylight 11 hr Waxing gibbous 74%

Map

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Sacramento R A Rio VistaRiver gauge 14.32 ft No reference yet −1.00 ft 3.5 mi
Sacramento R A FreeportRiver gauge 10,300 cfs Normal +750 cfs 26 mi
San Ramon C A San RamonRiver gauge 0.0 cfs Low ±0 28 mi
Alamo Canal near PleasantonCanal gauge, Alamo Canal 1.85 ft Below flood stage −0.01 ft 31 mi
Arroyo Valle near LivermoreRiver gauge, Arroyo Valle 8.3 cfs High ±0 33 mi
Crow Creek near HaywardRiver gauge, Crow Creek 2.90 ft Below flood stage ±0 34 mi
San Lorenzo Creek above Don Castro Reservoir near Castro VRiver gauge, San Lorenzo Creek 0.3 cfs Normal ±0 34 mi
Arroyo De La Laguna A VeronaRiver gauge 0.74 ft Below flood stage ±0 35 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 Threemile Slough near Rio Vista today?

On Oct 20, 2026, 08:15 PM PDT, the water level was 5.06 ft. Down 0.89 ft over the last 24 hours.

Is Threemile Slough near Rio Vista rising or falling?

Down 0.89 ft over the last 24 hours. Down 0.27 ft over the last 7 days.

Is the level of Threemile Slough near Rio Vista 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:11337080 (Agency page)
Coordinates
38.10333, -121.68611 (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

ParameterLast valueTime (UTC)Quality
Water level 5.06 ft 2026-10-21 03:15 Provisional
Flow 971 cfs 2026-10-21 03:15 Provisional

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Embed this gauge

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

How to cite

U.S. Geological Survey: Threemile Slough near Rio Vista (usgs:11337080). Accessed October 21, 2026 via Nivelmap, https://nivelmap.com/en/united-states/california/threemile-slough-near-rio-vista

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.