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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 >  STORET >  CABEACH_WQX >  CABEACH_WQX-North Mad River Mouth

North Mad River Mouth (CABEACH_WQX-North Mad River Mouth) site data in the Water Quality Portal

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

This beach program site-ocean site, maintained by the California State Water Resource Control Board (identifier CABEACH_WQX), has the name "North Mad River Mouth" and has the identifier CABEACH_WQX-North Mad River Mouth. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)18010102.

This site is located in Humboldt County County, California at 40.9538200000 degrees latitude and -124.1276800000 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 "CABEACH_WQX-North Mad River Mouth" 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*
Microbiological 2015 - 2024
*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 CABEACH_WQX
OrganizationFormalName California State Water Resource Control Board
MonitoringLocationIdentifier CABEACH_WQX-North Mad River Mouth
MonitoringLocationName North Mad River Mouth
MonitoringLocationTypeName BEACH Program Site-Ocean
MonitoringLocationDescriptionText Clam Beach near Mad River
HUCEightDigitCode 18010102
LatitudeMeasure 40.9538200000
LongitudeMeasure -124.1276800000
SourceMapScaleNumeric 0
HorizontalCollectionMethodName GPS-Unspecified
HorizontalCoordinateReferenceSystemDatumName NAD83
CountryCode US
StateCode 06
CountyCode 023
ProviderName STORET