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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-ARK0234

Spadra Creek bridge on AR-77, 5 mi N of Clarksville (ARDEQH2O_WQX-ARK0234) 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 "Spadra Creek bridge on AR-77, 5 mi N of Clarksville" and has the identifier ARDEQH2O_WQX-ARK0234. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)11110202.

This site is located in Johnson County County, Arkansas at 35.5387310000 degrees latitude and -93.4780880000 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-ARK0234" 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 2024 - 2024
Inorganics, Major, Metals 2023 - 2024
Inorganics, Major, Non-metals 2023 - 2024
Inorganics, Minor, Metals 2023 - 2024
Inorganics, Minor, Non-metals 2023 - 2024
Nutrient 2023 - 2024
Organics, Other 2024 - 2024
Physical 2023 - 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 ARDEQH2O_WQX
OrganizationFormalName Arkansas Department of Environmental Quality
MonitoringLocationIdentifier ARDEQH2O_WQX-ARK0234
MonitoringLocationName Spadra Creek bridge on AR-77, 5 mi N of Clarksville
MonitoringLocationTypeName River/Stream
HUCEightDigitCode 11110202
LatitudeMeasure 35.5387310000
LongitudeMeasure -93.4780880000
SourceMapScaleNumeric 0
HorizontalCollectionMethodName Interpolation-Photo
HorizontalCoordinateReferenceSystemDatumName UNKWN
CountryCode US
StateCode 05
CountyCode 071
ProviderName STORET