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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 user interface only serves WQX2.2 profiles, which do NOT contain USGS data added after March 11, 2024.

WQP Home >  Providers >  NWIS >  USGS-CA >  USGS-11042000

SAN LUIS REY R A OCEANSIDE CA (USGS-11042000) site data in the Water Quality Portal

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

This stream site, maintained by the USGS California Water Science Center (identifier USGS-CA), has the name "SAN LUIS REY R A OCEANSIDE CA" and has the identifier USGS-11042000. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)18070303. See more details of this site the the USGS NWIS Web page for this site. This site has a drainage area of 557 sq mi.

This site is located in San Diego County County, California at 33.21809119000000 degrees latitude and -117.3603162000000 degrees longitude using the datum NAD83. The horizontal location collection method was "Interpolated from MAP." and the accuracy is 5 seconds. This site is at an elevation of 20.00 feet and the accuracy of the elevation measurement, collected using the method "Interpolated from topographic map." is 10 feet. The vertical coordinate reference system is NGVD29.

To download the metadata about this site along with water quality data, go to the Portal Page and enter "USGS-11042000" 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 1978 - 1981
Biological, Algae, Phytoplankton, Cyanobacteria, Periphyton 1978 - 1979
Biological, Algae, Phytoplankton, Photosynthetic Pigments 1978 - 1979
Biological, Counts 1978 - 1981
Biological, Photosynthetic Pigments 1978 - 1979
Information 1970 - 1992
Inorganics, Major, Metals 1971 - 1992
Inorganics, Major, Non-metals 1971 - 1992
Inorganics, Minor, Metals 1971 - 1992
Inorganics, Minor, Non-metals 1971 - 1992
Microbiological 1978 - 1992
Nutrient 1971 - 1992
Organics, Other 1978 - 1981
Organics, PCBs 1973 - 1973
Organics, Pesticide 1971 - 1981
Physical 1969 - 1993
Radiochemical 1981 - 1981
Sediment 1969 - 1993
*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 USGS-CA
OrganizationFormalName USGS California Water Science Center
MonitoringLocationIdentifier USGS-11042000
MonitoringLocationName SAN LUIS REY R A OCEANSIDE CA
MonitoringLocationTypeName Stream
HUCEightDigitCode 18070303
DrainageAreaMeasure/MeasureValue 557
DrainageAreaMeasure/MeasureUnitCode sq mi
LatitudeMeasure 33.21809119000000
LongitudeMeasure -117.3603162000000
HorizontalAccuracyMeasure/MeasureValue 5
HorizontalAccuracyMeasure/MeasureUnitCode seconds
HorizontalCollectionMethodName Interpolated from MAP.
HorizontalCoordinateReferenceSystemDatumName NAD83
VerticalMeasure/MeasureValue 20.00
VerticalMeasure/MeasureUnitCode feet
VerticalAccuracyMeasure/MeasureValue 10
VerticalAccuracyMeasure/MeasureUnitCode feet
VerticalCollectionMethodName Interpolated from topographic map.
VerticalCoordinateReferenceSystemDatumName NGVD29
CountryCode US
StateCode 06
CountyCode 073
ProviderName NWIS