Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

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 >  STORET >  11NPSWRD_WQX >  11NPSWRD_WQX-SAMO_SCCP_R21

Santa Monica Bay Site No. R21 Near Las Tunas State Beach (11NPSWRD_WQX-SAMO_SCCP_R21) site data in the Water Quality Portal

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

This ocean site, maintained by the National Park Service Water Resources Division (identifier 11NPSWRD_WQX), has the name "Santa Monica Bay Site No. R21 Near Las Tunas State Beach" and has the identifier 11NPSWRD_WQX-SAMO_SCCP_R21. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)18070104.

This site is located in Los Angeles County County, California at 33.9925000000 degrees latitude and -118.5992000000 degrees longitude using the datum NAD27. 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 "11NPSWRD_WQX-SAMO_SCCP_R21" 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, Counts 1977 - 1977
Information 1977 - 1977
Inorganics, Minor, Metals 1977 - 1977
Organics, Other 1977 - 1977
Organics, PCBs 1977 - 1977
Organics, Pesticide 1977 - 1977
Physical 1977 - 1977
*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 11NPSWRD_WQX
OrganizationFormalName National Park Service Water Resources Division
MonitoringLocationIdentifier 11NPSWRD_WQX-SAMO_SCCP_R21
MonitoringLocationName Santa Monica Bay Site No. R21 Near Las Tunas State Beach
MonitoringLocationTypeName Ocean
MonitoringLocationDescriptionText The station is Pacific Ocean Site No. R21, approximately 5.2 kilometers south of Las Tunas State Beach at a depth of 60 meters.
HUCEightDigitCode 18070104
LatitudeMeasure 33.9925000000
LongitudeMeasure -118.5992000000
SourceMapScaleNumeric 0
HorizontalCollectionMethodName Loran C
HorizontalCoordinateReferenceSystemDatumName NAD27
CountryCode US
StateCode 06
CountyCode 037
ProviderName STORET