Lower Crystal Springs Reservoir near San Mateo water level

Name: Lower Crystal Springs Reservoir near San Mateo water level (U.S. Geological Survey)
Creator: U.S. Geological Survey
License: https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits

Reservoir, Lower Crystal Springs Reservoir, California, United States

Directions

Latest reading

Surface elevation

271.91ft

Measured Oct 16, 2026, 02:30 PM PDT (46 min ago)

History

Not enough readings for a chart yet. History builds up with every update.

What this means

The latest lake level at Lower Crystal Springs Reservoir near San Mateo is 271.91 ft. The agency publishes no normal range or warning level for this reservoir yet, so there is nothing to judge the number against.

Over the past 30 days it has moved between 271.91 ft and 271.93 ft.

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

Swimming and boating at Lower Crystal Springs Reservoir near San Mateo

Without a published normal range, the trend is the most useful thing here: a steady lake means few changes at the shore.

If you swim, pick a spot with an easy way out, and remember that drop-offs move as the level changes.

Weather at the gauge

The forecast is not available right now.

Sunrise 07:19 AM Sunset 06:32 PM Daylight 11h 13m First quarter 34 %

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
San Mateo Creek below Lo Crystal Sp Reservoir near San MateoRiver gauge, San Mateo Creek	3.8 cfs	Normal		1.0 mi
Pilarcitos Creek below Stone Dam near HillsboroughRiver gauge, Pilarcitos Creek	0.9 cfs	Normal		2.5 mi
Pilarcitos Lake near HillsboroughLake, Pilarcitos Lake	679.88 ft	Below flood stage		4.3 mi
Pilarcitos C A Half Moon BayRiver gauge	2.65 ft	Below flood stage		5.5 mi
San Francisquito C A Stanford UniversityRiver gauge	0.19 ft	Below flood stage		11 mi
San Francisco Bay A Old Dumbarton Branch near NewarkEstuary gauge, San Francisco Bay A Old Dumbarton Branch	6.14 ft	Very high	+1.90 ft	13 mi
San Gregorio C A San GregorioRiver gauge	3.64 ft	Below flood stage		13 mi
Alameda C Flood Channel A Union CityRiver gauge	1.1 cfs	Normal		18 mi

Questions and answers

How often is Lower Crystal Springs Reservoir near San Mateo updated?

Several times an hour. New readings from U.S. Geological Survey appear here as they arrive. Latest: Oct 16, 2026, 02:30 PM PDT.

What is the water level of Lower Crystal Springs Reservoir near San Mateo today?

On Oct 16, 2026, 02:30 PM PDT, the surface elevation was 271.91 ft. No reference yet.

Is the level of Lower Crystal Springs Reservoir near San Mateo normal?

Latest reading. The agency publishes no normal range for this gauge yet, so we show the trend only.

How often is this data updated?

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 U.S. Geological Survey, the official operator of this gauge, and are published under 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:11162750 (Agency page)
Coordinates: 37.51528, -122.35583 (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
Surface elevation `elevation`	271.91 ft	2026-10-16 21:30	Provisional

Download

Embed this gauge

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

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How to cite

U.S. Geological Survey: Lower Crystal Springs Reservoir near San Mateo (usgs:11162750). Accessed October 16, 2026 via Nivelmap, https://nivelmap.com/en/united-states/california/lower-crystal-springs-reservoir-near-san-mateo

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