Guadalupe River above Highway 101 A San Jose water level

Name: Guadalupe River above Highway 101 A San Jose 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, Guadalupe River, California, United States

Directions

Below flood stage

Water level

5.17ft Steady over the last 24 hours

Measured Oct 20, 2026, 08:00 PM PDT (27 min ago)

Flow: 26.8 cfs

History

7 days

Water level Forecast Minor flood stage

The forecast expects the river to rise to 6.01 ft by Wednesday, October 21 at 10:00 PM. Issued Tuesday, October 20 at 07:23 AM by NOAA National Weather Service.

What this means

The gauge at Guadalupe River above Highway 101 A San Jose reads 5.17 ft, a normal level.

It is 13.83 ft below the flood stage of 19.00 ft.

It has barely moved over the past 24 hours. The forecast expects the river to rise to 6.01 ft by Wednesday, October 21 at 10:00 PM. Over the past 30 days it has moved between 5.08 ft and 5.18 ft.

Judged against the official flood stage for this gauge. How to read levels

Key numbers

Forecast peak: 6.01 ftWednesday, October 21 at 10:00 PM

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.

The National Weather Service puts flood stage for this gauge at 19.00 ft, still 13.83 ft away.

What happens at each level

21.00 ft: Major Flooding: Levee overtopping, with failures likely along both sides of the river between US-101 and Trimble flowing in a northerly direction.
20.00 ft: Moderate Flooding: Levee overtopping imminent. Highest risk areas are between US-101 and Trimble.
19.00 ft: Minor Flooding: High flows with heavy debris might cause localized blockages to cause overtopping of levees.
17.00 ft: Action Stage: 7256 cfs
5.17 ft: Right now

Impact statements from the U.S. National Weather Service.

Weather at the gauge

The forecast is not available right now.

Sunrise 07:22 AM Sunset 06:24 PM Daylight 11 hr, 2 min Waxing gibbous 74%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Coyote Creek above Highway 237 A MilpitasRiver gauge, Coyote Creek	5.13 ft	Below flood stage	±0	3.4 mi
Saratoga C A SaratogaRiver gauge	0.8 cfs	Normal	+0.1 cfs	10 mi
Alameda Creek below Calaveras Creek near SunolRiver gauge, Alameda Creek	7.5 cfs	High	±0	11 mi
Arroyo Hondo near San JoseRiver gauge, Arroyo Hondo	1.3 cfs	Normal	+0.2 cfs	11 mi
Calaveras Creek near SunolRiver gauge, Calaveras Creek	7.6 cfs	Normal	±0	11 mi
Alameda Creek below Diversion Dam near SunolRiver gauge, Alameda Creek	0.1 cfs	Normal	±0	12 mi
Alameda Creek above Diversion Dam near SunolRiver gauge, Alameda Creek	1.61 ft	Below flood stage	±0	12 mi
Alameda Creek below Welch Creek near SunolRiver gauge, Alameda Creek	6.8 cfs	High	−0.3 cfs	12 mi

Questions and answers

What is flood stage for the Guadalupe River above Highway 101 A San Jose?

The official flood stage is 19.00 ft. The level is currently 13.83 ft below it.

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 Guadalupe River above Highway 101 A San Jose today?

On Oct 20, 2026, 08:00 PM PDT, the water level was 5.17 ft. Steady over the last 24 hours.

Is Guadalupe River above Highway 101 A San Jose rising or falling?

Steady over the last 24 hours. Up 0.06 ft over the last 7 days.

Is the level of Guadalupe River above Highway 101 A San Jose normal?

Below flood stage. Judged against the official flood stage for this gauge.

Is Guadalupe River above Highway 101 A San Jose expected to rise?

The forecast expects the river to rise to 6.01 ft by Wednesday, October 21 at 10:00 PM.

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.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: U.S. Geological Survey
Station code: usgs:11169025 (Agency page)
Coordinates: 37.37383, -121.93301 (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	5.17 ft	2026-10-21 03:00	Provisional
Flow	26.8 cfs	2026-10-21 03:00	Provisional

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How to cite

U.S. Geological Survey: Guadalupe River above Highway 101 A San Jose (usgs:11169025). Accessed October 21, 2026 via Nivelmap, https://nivelmap.com/en/united-states/california/guadalupe-river-above-highway-101-a-san-jose

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