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Important for you to know:

  • New to WDFN: see current water conditions throughout the state using the new State Pages. Visit the Louisiana page for an example. Filter by continuous data type and age of data, view latest values, and link to graphing options to explore the data further. You can update the state name in the URL to visit your State Page or read our announcement on the Water Data for the Nation blog to find links to all the state and territory pages.
Important Legacy real-time page

USGS Parameter Group Data Types Start Date End Date
Biological Water-quality 2023-11-30 2024-01-10
Information Water-quality 2011-07-12 2024-02-15
Inorganics, Major, Non-metals Unit Values 2023-08-07 2024-12-03
Physical Unit Values, Water-quality 2003-11-06 2024-12-03
Sediment Unit Values, Water-quality 2010-10-01 2024-12-03
n/a USGS Annual Water Data Reports Site 2005-01-01 2013-01-01
Water Data for the Nation inventory

Monitoring location 374938122251801 is associated with an Estuary in San Francisco County, California. Current conditions of Chlorophyll fluorescence (fChl), Dissolved oxygen, Specific conductance, and more are available. Water data back to 2003 are available online.

Metadata Element Location Metadata Metadata Code
Agency
U.S. Geological Survey USGS
Site identification number
374938122251801 n/a
Site name
SAN FRANCISCO BAY A NE SHORE ALCATRAZ ISLAND CA n/a
Site type
Estuary
ES
DMS latitude 374938 n/a
DMS longitude 1222518 n/a
Decimal latitude 37.8272222 n/a
Decimal longitude -122.4216667 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 1983 NAD83
Decimal Latitude-longitude datum North American Datum of 1983 NAD83
District
California 06
State
California 06
County
San Francisco County 075
Country US n/a
Land net location description n/a
Name of location map SAN FRANCISCO NORTH n/a
Scale of location map 24000 n/a
Altitude of Gage/land surface 12 feet n/a
Method altitude determined Level or other surveyed method. L
Altitude accuracy 12. feet n/a
Altitude datum
National Geodetic Vertical Datum of 1929 NGVD29
Subbasin hydrologic unit
18050002
Drainage basin
n/a
Topographic setting
n/a
Flags for instruments at site NNYNNNNNNNNNNNNNNNNNNNNNNNNNNN n/a
Date of first construction
n/a
Date site established or inventoried n/a
Drainage area
n/a
Contributing drainage area n/a
Time Zone abbreviation PST n/a
Site honors Daylight Saving Time
N n/a
Data reliability
n/a
Data-other GW files 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 967741922 n/a