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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 >  21FLA_WQX >  21FLA_WQX-20030159

ST JOHNS R CHANNEL MARKER 24 (21FLA_WQX-20030159) 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 FL Dept. of Environmental Protection, Northeast District (identifier 21FLA_WQX), has the name "ST JOHNS R CHANNEL MARKER 24" and has the identifier 21FLA_WQX-20030159. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)03080103.

This site is located in Clay County County, Florida at 29.9377630000 degrees latitude and -81.6005102000 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 "21FLA_WQX-20030159" 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, Cyanobacteria 2007 - 2007
Biological, Algae, Phytoplankton 2007 - 2007
Information 2007 - 2007
Inorganics, Major, Metals 2007 - 2007
Inorganics, Major, Non-metals 2007 - 2007
Inorganics, Minor, Metals 2007 - 2007
Inorganics, Minor, Non-metals 2007 - 2007
Microbiological 2007 - 2007
Nutrient 2007 - 2007
Organics, Other 2007 - 2007
Physical 2007 - 2007
*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 21FLA_WQX
OrganizationFormalName FL Dept. of Environmental Protection, Northeast District
MonitoringLocationIdentifier 21FLA_WQX-20030159
MonitoringLocationName ST JOHNS R CHANNEL MARKER 24
MonitoringLocationTypeName River/Stream
MonitoringLocationDescriptionText SEGMENT 20.3FA BODY OF WATER: RIVER, ST JOHNS ST JOHNS RIVER NEAR GREEN COVE SPRINGS OFF BAYARD POINT NEAR CHANNEL MARKER #24 MIGRATED FROM LEGACY STORET AGENCY CODE (21FLA ) ON 17-JUN-99 MAJOR BASIN NAME: SOUTH-EAST BASIN CODE: MINOR BASIN NAME: ST JOHNS
HUCEightDigitCode 03080103
LatitudeMeasure 29.9377630000
LongitudeMeasure -81.6005102000
SourceMapScaleNumeric 5000
HorizontalCollectionMethodName Interpolation-Photo
HorizontalCoordinateReferenceSystemDatumName WGS84
CountryCode US
StateCode 12
CountyCode 019
ProviderName STORET