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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 >  NWIS >  USGS-AR >  USGS-07263295

Maumelle River at Williams Junction, AR (USGS-07263295) site data in the Water Quality Portal

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

This stream site, maintained by the USGS Arkansas Water Science Center (identifier USGS-AR), has the name "Maumelle River at Williams Junction, AR" and has the identifier USGS-07263295. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)11110207. See more details of this site the the USGS NWIS Web page for this site. This site has a drainage area of 46.1 sq mi.

This site is located in Perry County County, Arkansas at 34.87611110000000 degrees latitude and -92.7744444000000 degrees longitude using the datum NAD83. The horizontal location collection method was "Mapping grade GPS unit (handheld accuracy range 12 to 40 ft)" and the accuracy is 1 seconds. This site is at an elevation of 386.70 feet and the accuracy of the elevation measurement, collected using the method "GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System" is .25 feet. The vertical coordinate reference system is NAVD88.

To download the metadata about this site along with water quality data, go to the Portal Page and enter "USGS-07263295" 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*
Information 1989 - 2022
Inorganics, Major, Metals 1989 - 2010
Inorganics, Major, Non-metals 1989 - 2024
Inorganics, Minor, Metals 1989 - 2016
Inorganics, Minor, Non-metals 1989 - 2011
Microbiological 1989 - 2024
Nutrient 1989 - 2023
Organics, Other 1989 - 2024
Organics, PCBs 1989 - 1993
Organics, Pesticide 1989 - 2009
Physical 1989 - 2024
Sediment 1989 - 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 USGS-AR
OrganizationFormalName USGS Arkansas Water Science Center
MonitoringLocationIdentifier USGS-07263295
MonitoringLocationName Maumelle River at Williams Junction, AR
MonitoringLocationTypeName Stream
HUCEightDigitCode 11110207
DrainageAreaMeasure/MeasureValue 46.1
DrainageAreaMeasure/MeasureUnitCode sq mi
LatitudeMeasure 34.87611110000000
LongitudeMeasure -92.7744444000000
HorizontalAccuracyMeasure/MeasureValue 1
HorizontalAccuracyMeasure/MeasureUnitCode seconds
HorizontalCollectionMethodName Mapping grade GPS unit (handheld accuracy range 12 to 40 ft)
HorizontalCoordinateReferenceSystemDatumName NAD83
VerticalMeasure/MeasureValue 386.70
VerticalMeasure/MeasureUnitCode feet
VerticalAccuracyMeasure/MeasureValue .25
VerticalAccuracyMeasure/MeasureUnitCode feet
VerticalCollectionMethodName GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System
VerticalCoordinateReferenceSystemDatumName NAVD88
CountryCode US
StateCode 05
CountyCode 105
ProviderName NWIS