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San Lorenzo C A San Lorenzo water level

River gauge, California, United States

Directions

Right now

Normal for mid-October

Water level

2.69ft Steady over the last 24 hours

Flow
1.3 cfs
1 3 4 5

History

History
2.672.682.692.70ftOct 16Oct 17Oct 18Oct 19Oct 202.672.682.692.70ftOct 16Oct 18Oct 20
Water level

What this means

San Lorenzo C A San Lorenzo is at 2.69 ft, in the normal range for mid-October.

It has barely moved over the past 24 hours. In the last month it has stayed between 2.67 ft and 2.70 ft.

Fall is often low-water season on rivers, until steadier rain returns.

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

Floating and fishing near San Lorenzo C A San Lorenzo

Normal flows mean predictable rapids and good access at most put-ins.

Weather at the gauge

The forecast is not available right now.

Sunrise 07:22 AM Sunset 06:26 PM Daylight 11 hr, 3 min Waxing gibbous 72%

Map

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Castro Valley C A HaywardRiver gauge 0.2 cfs Normal ±0 3.3 mi
San Lorenzo C A HaywardRiver gauge 2.59 ft Below flood stage ±0 4.1 mi
Cull Creek above Cull C Reservoir near Castro ValleyRiver gauge, Cull Creek 0.0 cfs Normal ±0 5.2 mi
San Lorenzo Creek above Don Castro Reservoir near Castro VRiver gauge, San Lorenzo Creek 0.3 cfs Normal ±0 5.3 mi
Crow Creek near HaywardRiver gauge, Crow Creek 2.90 ft Below flood stage ±0 5.4 mi
Alameda C Flood Channel A Union CityRiver gauge 1.2 cfs Normal +1.0 cfs 8 mi
San Ramon C A San RamonRiver gauge 0.0 cfs Low ±0 10 mi
Alameda Creek near FremontRiver gauge, Alameda Creek 19.1 cfs Normal +9.2 cfs 11 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 San Lorenzo C A San Lorenzo today?

On Oct 20, 2026, 03:30 PM PDT, the water level was 2.69 ft. Steady over the last 24 hours.

Is San Lorenzo C A San Lorenzo rising or falling?

Steady over the last 24 hours.

Is the level of San Lorenzo C A San Lorenzo 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:11181040 (Agency page)
Coordinates
37.68410, -122.13996 (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 2.69 ft 2026-10-20 22:30 Provisional
Flow 1.3 cfs 2026-10-20 22:30 Provisional

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How to cite

U.S. Geological Survey: San Lorenzo C A San Lorenzo (usgs:11181040). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-states/california/san-lorenzo-c-a-san-lorenzo

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.