San Mateo Creek above Junction Box A Dam1 near Hillsborough water level

Name: San Mateo Creek above Junction Box A Dam1 near Hillsborough 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, San Mateo Creek, California, United States

Directions

Latest reading

Water level

0.08ft Steady over the last 24 hours

Measured Oct 21, 2026, 02:00 AM PDT (34 min ago)

Flow: 0.0 cfs

History

7 days

Water level

What this means

San Mateo Creek above Junction Box A Dam1 near Hillsborough reads 0.08 ft as of Oct 21, 2026, 02:00 AM PDT. There is no published reference for this river yet, so we can't say whether that is high or low for the season.

It has barely moved over the past 24 hours. In the last month it has stayed between 0.08 ft and 0.14 ft.

Over the past seven days the change adds up to −0.05 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 San Mateo Creek above Junction Box A Dam1 near Hillsborough

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

Weather at the gauge

No rain in the last 3 days.

21 Wed 69° 57° 0.74 in, 27% Wind 9 mph

22 Thu 57° 54° 0.80 in, 42% Wind 11 mph

23 Fri 66° 54° – Wind 13 mph

24 Sat 71° 52° – Wind 7 mph

25 Sun 74° 55° – Wind 5 mph

26 Mon 72° 55° – Wind 6 mph

27 Tue 71° 53° – Wind 8 mph

Forecast: Open-Meteo

Sunrise 07:24 AM Sunset 06:26 PM Daylight 11 hr, 1 min Waxing gibbous 76%

Map

Other gauges on San Mateo Creek

Gauge	Level	Compared with normal	24 hours	Distance
San Mateo Creek below Junction Box A Dam1 near HillsboroughRiver gauge, San Mateo Creek	0.30 ft	No reference yet	±0	0.1 mi
San Mateo Creek below Lo Crystal Sp Reservoir near San MateoRiver gauge, San Mateo Creek	4.0 cfs	Normal	±0	3.8 mi

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Pilarcitos Lake near HillsboroughLake, Pilarcitos Lake	679.65 ft	Below flood stage	−0.04 ft	0.6 mi
Pilarcitos Creek below Spillway near HillsboroughRiver gauge, Pilarcitos Creek	2.7 cfs	Normal	−0.1 cfs	0.7 mi
Pilarcitos Creek above Stone Dam near HillsboroughRiver gauge, Pilarcitos Creek	3.4 cfs	Normal	±0	2.2 mi
Pilarcitos Creek below Stone Dam near HillsboroughRiver gauge, Pilarcitos Creek	1.5 cfs	Normal	±0	2.5 mi
Pilarcitos C A Half Moon BayRiver gauge	2.75 ft	Below flood stage	+0.01 ft	6 mi
San Francisquito C A Stanford UniversityRiver gauge	0.18 ft	Below flood stage	±0	16 mi
San Gregorio C A San GregorioRiver gauge	3.69 ft	Below flood stage	+0.02 ft	16 mi
San Francisco Bay A Old Dumbarton Branch near NewarkEstuary gauge, San Francisco Bay A Old Dumbarton Branch	1.62 ft	Very low	+0.67 ft	17 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 Mateo Creek above Junction Box A Dam1 near Hillsborough today?

On Oct 21, 2026, 02:00 AM PDT, the water level was 0.08 ft. Steady over the last 24 hours.

Is San Mateo Creek above Junction Box A Dam1 near Hillsborough rising or falling?

Steady over the last 24 hours. Down 0.05 ft over the last 7 days.

Is the level of San Mateo Creek above Junction Box A Dam1 near Hillsborough 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:11162735 (Agency page)
Coordinates: 37.55697, -122.41825 (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	0.08 ft	2026-10-21 09:00	Provisional
Flow	0.0 cfs	2026-10-21 09:00	Provisional

Download

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How to cite

U.S. Geological Survey: San Mateo Creek above Junction Box A Dam1 near Hillsborough (usgs:11162735). Accessed October 21, 2026 via Nivelmap, https://nivelmap.com/en/united-states/california/san-mateo-creek-above-junction-box-a-dam1-near-hillsborough

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