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New WQX 3.0 profiles are available at waterqualitydata.us/beta/. These profiles will contain recent USGS data added since March 11, 2024, which marks the beginning of limited accessibility for USGS data. Read more about the 3.0 profiles and associated changes here.

This legacy user interface will continue to function for several weeks. However, this user interface only serves WQX2.2 profiles, which do NOT contain USGS data added after March 11, 2024.

WQP Home >  Providers >  STORET >  CEDEN >  CEDEN-BG30

San Joaquin River (BG30) (CEDEN-BG30) site data in the Water Quality Portal

Data Provider: STORET (Learn more about Water Quality Portal Data Providers)

This other-surface water site, maintained by the California State Water Resources Control Board (identifier CEDEN), has the name "San Joaquin River (BG30)" and has the identifier CEDEN-BG30. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)18040003.

This site is located in Contra Costa County County, California at 38.0205000000 degrees latitude and -121.8060000000 degrees longitude using the datum WGS84. No horizontal location accuracy metadata is available.

To download the metadata about this site along with water quality data, go to the Portal Page and enter "CEDEN-BG30" into the "Site ID" box under Site Parameters

What other monitoring locations are upstream or downstream from this one?

Upstream and downstream locations

This map shows all Water Quality Portal stations that are 10 miles upstream (dashed dark blue) and 10 miles downstream (solid light blue) of this monitoring location (indicated by the large blue circle). The upstream and downstream functionality is provided by the Network Linked Data Index.

When were data collected at this location?

Periods of record for data characteristic groups

For a more detailed breakdown of data, go to the Monitoring Report at the EPA How's My Waterway Application
Characteristic Group Date Range*
Biological, Algae, Phytoplankton, Photosynthetic Pigments 1994 - 2019
Information 1993 - 2007
Inorganics, Major, Non-metals 2005 - 2009
Inorganics, Minor, Metals 1993 - 2019
Inorganics, Minor, Non-metals 1993 - 2019
Not Assigned 1996 - 2012
Nutrient 1993 - 2013
Organics, Other 1993 - 2019
Organics, PCBs 1993 - 2011
Organics, Pesticide 1993 - 2014
Physical 1993 - 2019
*Date ranges may contain gap years

What other information is available for this location?

Detailed Metadata

For the definitions of the metadata elements, please go to the Water Quality Portal user guide

Location Metadata Value
OrganizationIdentifier CEDEN
OrganizationFormalName California State Water Resources Control Board
MonitoringLocationIdentifier CEDEN-BG30
MonitoringLocationName San Joaquin River (BG30)
MonitoringLocationTypeName Other-Surface Water
HUCEightDigitCode 18040003
LatitudeMeasure 38.0205000000
LongitudeMeasure -121.8060000000
HorizontalCollectionMethodName GPS-Unspecified
HorizontalCoordinateReferenceSystemDatumName WGS84
CountryCode US
StateCode 06
CountyCode 013
ProviderName STORET