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Arroyo Las Positas 300m upstream of El Charro Rd. (CEDEN-204R04031) site data in the Water Quality Portal

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

This river/stream site, maintained by the California State Water Resources Control Board (identifier CEDEN), has the name "Arroyo Las Positas 300m upstream of El Charro Rd." and has the identifier CEDEN-204R04031. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC) 18050004. You can learn more about what is happening in this HUC at the EPA's Surf Your Watershed site or at the USGS Science In Your Watershed site.

This site is located in Alameda County County, California at 37.6951000000 degrees latitude and -121.8450000000 degrees longitude using the datum NAD83. 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-204R04031" 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 National Linked Data Index, part of the Open Water Data Initiative.

When were data collected at this location?

Periods of record for data characteristic groups
Characteristic Group Date Range*
Information 2019 - 2019
Inorganics, Major, Non-metals 2019 - 2019
Inorganics, Minor, Metals 2019 - 2019
Not Assigned 2019 - 2019
Nutrient 2019 - 2019
Physical 2019 - 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-204R04031
MonitoringLocationName Arroyo Las Positas 300m upstream of El Charro Rd.
MonitoringLocationTypeName River/Stream
HUCEightDigitCode 18050004
LatitudeMeasure 37.6951000000
LongitudeMeasure -121.8450000000
HorizontalCollectionMethodName Unknown
HorizontalCoordinateReferenceSystemDatumName NAD83
CountryCode US
StateCode 06
CountyCode 001
ProviderName STORET