San Francisco Bay A Old Dumbarton Branch near Newark water level

Name: San Francisco Bay A Old Dumbarton Branch near Newark 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, San Francisco Bay A Old Dumbarton Branch, California, United States

Directions

Very low for late October

Water level

1.62ft Up 0.67 ft over the last 24 hours

Measured Oct 21, 2026, 02:00 AM PDT (32 min ago)

History

7 days 30 days 1 year Years compared

20252026

Water level Normal range (10–90 %)

What this means

Low water at San Francisco Bay A Old Dumbarton Branch near Newark: the gauge reads 1.62 ft, far below normal for late October.

That puts it 1.84 ft below the median of 3.46 ft for late October, based on 15 years of readings. A year ago it stood at 3.59 ft (−1.97 ft).

It is on the way up, by 0.67 ft over the past 24 hours. The 30-day range is 0.52 ft – 7.05 ft.

Compared with 15 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date: 3.46 ft1.84 ft below the median for this date
Normal for this date: 3.11 ft – 3.80 ft8 years in 10 fall in this range (15 years of records)
Same day last year: 3.59 ft−1.97 ft
Lowest and highest in 30 days: 0.52 ft – 7.05 ft
Lowest and highest in 12 months: 3.18 ft – 4.54 ft

Weather at the gauge

The forecast is not available right now.

Sunrise 07:23 AM Sunset 06:24 PM Daylight 11 hr, 2 min Waxing gibbous 76%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Alameda C Flood Channel A Union CityRiver gauge	11.2 cfs	Very high	+11.0 cfs	7 mi
San Francisquito C A Stanford UniversityRiver gauge	0.18 ft	Below flood stage	±0	7 mi
Alameda Creek near FremontRiver gauge, Alameda Creek	8.8 cfs	Normal	+1.0 cfs	8 mi
Alameda Creek near NilesRiver gauge, Alameda Creek	2.61 ft	Below flood stage	+0.01 ft	10 mi
Coyote Creek above Highway 237 A MilpitasRiver gauge, Coyote Creek	5.13 ft	Below flood stage	±0	12 mi
Castro Valley C A HaywardRiver gauge	0.2 cfs	Low	±0	12 mi
San Lorenzo C A San LorenzoRiver gauge	1.3 cfs	Normal	±0	12 mi
San Lorenzo C A HaywardRiver gauge	2.58 ft	Below flood stage	±0	13 mi

Questions and answers

How does San Francisco Bay A Old Dumbarton Branch near Newark compare with last year?

It is 1.97 ft lower than on the same day last year, when the reading was 3.59 ft.

What is a normal level for San Francisco Bay A Old Dumbarton Branch near Newark in late October?

The median for late October is 3.46 ft. In 8 years out of 10 the reading falls between 3.11 ft and 3.80 ft, based on 15 years of records.

What is the water level of San Francisco Bay A Old Dumbarton Branch near Newark today?

On Oct 21, 2026, 02:00 AM PDT, the water level was 1.62 ft. Up 0.67 ft over the last 24 hours.

Is San Francisco Bay A Old Dumbarton Branch near Newark rising or falling?

Up 0.67 ft over the last 24 hours. Down 2.53 ft over the last 7 days.

Is the level of San Francisco Bay A Old Dumbarton Branch near Newark normal?

Very low for late October. Compared with 15 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:373025122065901 (Agency page)
Coordinates: 37.50694, -122.11639 (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	1.62 ft	2026-10-21 09:00	Provisional

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How to cite

U.S. Geological Survey: San Francisco Bay A Old Dumbarton Branch near Newark (usgs:373025122065901). Accessed October 21, 2026 via Nivelmap, https://nivelmap.com/en/united-states/california/san-francisco-bay-a-old-dumbarton-branch-near-newark

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