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Important for you to know:

  • New to WDFN: see current water conditions throughout the state using the new State Pages. Filter by continuous data type and age of data, view latest values, and link to graphing options to explore the data further. To learn more, read our announcement on the Water Data for the Nation blog.
Important Legacy real-time page

USGS Parameter Group Data Types Start Date End Date
Information Water-quality 1985-10-16 1993-04-28
Inorganics, Major, Metals Water-quality 1967-05-10 1967-09-14
Inorganics, Major, Non-metals Water-quality 1967-05-10 1967-09-14
Physical Daily Values, Unit Values, Water-quality 1967-05-10 2024-11-21
Sediment Water-quality 1985-10-16 1993-04-28
n/a Peak Measurements 1955-12-22 2022-12-31
n/a Site Visits 1969-10-27 2024-08-14
n/a USGS Annual Water Data Reports Site 2005-01-01 2023-01-01
Water Data for the Nation inventory

Monitoring location 11162570 is associated with a Stream in San Mateo County, California. Current conditions of Discharge and Gage height are available. Water data back to 1955 are available online.

Metadata Element Location Metadata Metadata Code
Agency
U.S. Geological Survey USGS
Site identification number
11162570 n/a
Site name
SAN GREGORIO C A SAN GREGORIO CA n/a
Site type
Stream
ST
DMS latitude 371933 n/a
DMS longitude 1222308 n/a
Decimal latitude 37.3257762 n/a
Decimal longitude -122.3866404 n/a
Latitude-longitude method
Interpolated from MAP. M
Latitude-longitude accuracy
Accurate to + or - 1 sec. S
Latitude-longitude datum
North American Datum of 1927 NAD27
Decimal Latitude-longitude datum North American Datum of 1983 NAD83
District
California 06
State
California 06
County
San Mateo County 081
Country US n/a
Land net location description n/a
Name of location map SAN GREGORIO n/a
Scale of location map 24000 n/a
Altitude of Gage/land surface 11.40 feet n/a
Method altitude determined Level or other surveyed method. L
Altitude accuracy .01 feet n/a
Altitude datum
National Geodetic Vertical Datum of 1929 NGVD29
Subbasin hydrologic unit
18050006
Drainage basin
n/a
Topographic setting
n/a
Flags for instruments at site NNNNYNNNNNNNNNNNNNNNNNNNNNNNNN n/a
Date of first construction
n/a
Date site established or inventoried n/a
Drainage area
50.9 square miles n/a
Contributing drainage area n/a
Time Zone abbreviation PST n/a
Site honors Daylight Saving Time
Y n/a
Data reliability
n/a
Data-other GW files NNNNNNNN n/a
National aquifer n/a
Local aquifer n/a
Local aquifer type
n/a
Well depth n/a
Hole depth
n/a
Source of depth data n/a
Project number 967700104 n/a

Operated in cooperation with:

logo for San Mateo Resource Conservation District
San Mateo Resource Conservation District
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USGS - Cooperative Matching Funds