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WQP Home >  Providers >  NWIS >  USGS-AR >  USGS-07257500

Illinois Bayou near Scottsville, AR (USGS-07257500) 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 "Illinois Bayou near Scottsville, AR" and has the identifier USGS-07257500. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)11110202. See more details of this site the the USGS NWIS Web page for this site. This site has a drainage area of 241 sq mi.

This site is located in Pope County County, Arkansas at 35.46638889000000 degrees latitude and -93.0411111000000 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 10 seconds. This site is at an elevation of 447.63 feet and the accuracy of the elevation measurement, collected using the method "GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System" is .18 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-07257500" 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.

Leaflet USGS The National Map: National Boundaries Dataset, 3DEP Elevation Program, Geographic Names Information System, National Hydrography Dataset, National Land Cover Database, National Structures Dataset, and National Transportation Dataset; USGS Global Ecosystems; U.S. Census Bureau TIGER/Line data; USFS Road data; Natural Earth Data; U.S. Department of State HIU; NOAA National Centers for Environmental Information. Data refreshed February, 2025.

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 1971 - 2015
Inorganics, Major, Metals 1953 - 2015
Inorganics, Major, Non-metals 1948 - 2015
Inorganics, Minor, Metals 1953 - 2015
Inorganics, Minor, Non-metals 1971 - 1972
Microbiological 2013 - 2015
Nutrient 1948 - 2015
Organics, Other 2013 - 2015
Organics, Pesticide 1971 - 1971
Physical 1948 - 2015
Sediment 2013 - 2015
*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-07257500
MonitoringLocationName Illinois Bayou near Scottsville, AR
MonitoringLocationTypeName Stream
HUCEightDigitCode 11110202
DrainageAreaMeasure/MeasureValue 241
DrainageAreaMeasure/MeasureUnitCode sq mi
LatitudeMeasure 35.46638889000000
LongitudeMeasure -93.0411111000000
HorizontalAccuracyMeasure/MeasureValue 10
HorizontalAccuracyMeasure/MeasureUnitCode seconds
HorizontalCollectionMethodName Mapping grade GPS unit (handheld accuracy range 12 to 40 ft)
HorizontalCoordinateReferenceSystemDatumName NAD83
VerticalMeasure/MeasureValue 447.63
VerticalMeasure/MeasureUnitCode feet
VerticalAccuracyMeasure/MeasureValue .18
VerticalAccuracyMeasure/MeasureUnitCode feet
VerticalCollectionMethodName GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System
VerticalCoordinateReferenceSystemDatumName NAVD88
CountryCode US
StateCode 05
CountyCode 115
ProviderName NWIS