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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 legacy user interface will continue to function for several weeks. However, this user interface only serves WQX2.2 profiles, which do NOT contain USGS data added after March 11, 2024.

WQP Home >  Providers >  STORET >  ARDEQH2O_WQX >  ARDEQH2O_WQX-WHI0025C

Black River downstream of Pocahontas, Arkansas (ARDEQH2O_WQX-WHI0025C) 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 Arkansas Department of Environmental Quality (identifier ARDEQH2O_WQX), has the name "Black River downstream of Pocahontas, Arkansas" and has the identifier ARDEQH2O_WQX-WHI0025C. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)11010009.

This site is located in Randolph County County, Arkansas at 36.2059750000 degrees latitude and -90.9920200000 degrees longitude using the datum UNKWN. 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 "ARDEQH2O_WQX-WHI0025C" 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, Photosynthetic Pigments 2015 - 2016
Inorganics, Major, Metals 2014 - 2016
Inorganics, Major, Non-metals 2014 - 2016
Inorganics, Minor, Metals 2014 - 2016
Inorganics, Minor, Non-metals 2014 - 2016
Nutrient 2014 - 2016
Organics, Other 2014 - 2016
Physical 2014 - 2016
*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 ARDEQH2O_WQX
OrganizationFormalName Arkansas Department of Environmental Quality
MonitoringLocationIdentifier ARDEQH2O_WQX-WHI0025C
MonitoringLocationName Black River downstream of Pocahontas, Arkansas
MonitoringLocationTypeName River/Stream
MonitoringLocationDescriptionText Launch at AGFC Pocahontas boat ramp and motor approximately 5.0 miles downstream od WHI0025
HUCEightDigitCode 11010009
LatitudeMeasure 36.2059750000
LongitudeMeasure -90.9920200000
SourceMapScaleNumeric 0
HorizontalCollectionMethodName Interpolation-Photo
HorizontalCoordinateReferenceSystemDatumName UNKWN
CountryCode US
StateCode 05
CountyCode 121
ProviderName STORET