Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

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-IL >  USGS-405526090010301

11N 4E-23.6d2 (USGS-405526090010301) site data in the Water Quality Portal

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

This well site, maintained by the USGS Illinois Water Science Center (identifier USGS-IL), has the name "11N 4E-23.6d2" and has the identifier USGS-405526090010301. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)07130005. See more details of this site the the USGS NWIS Web page for this site.

This site is located in Knox County County, Illinois at 40.92392618000000 degrees latitude and -90.0176141000000 degrees longitude using the datum NAD83. The horizontal location collection method was "Interpolated from MAP." and the accuracy is 5 seconds. The source map scale is 1:24000. This site is at an elevation of 710 feet and the accuracy of the elevation measurement, collected using the method "Interpolated from topographic map." is 10 feet. The vertical coordinate reference system is NGVD29.

This site is located in the "Pennsylvanian aquifers" aquifer. The geologic formation type is Pennsylvanian System. The well depth is 880 ft.

To download the metadata about this site along with water quality data, go to the Portal Page and enter "USGS-405526090010301" 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*
Inorganics, Major, Metals 1986 - 1986
Inorganics, Major, Non-metals 1986 - 1986
Inorganics, Minor, Metals 1986 - 1986
Inorganics, Minor, Non-metals 1986 - 1986
Nutrient 1986 - 1986
Organics, Other 1986 - 1986
Organics, Pesticide 1986 - 1986
Physical 1986 - 1986
*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-IL
OrganizationFormalName USGS Illinois Water Science Center
MonitoringLocationIdentifier USGS-405526090010301
MonitoringLocationName 11N 4E-23.6d2
MonitoringLocationTypeName Well
HUCEightDigitCode 07130005
LatitudeMeasure 40.92392618000000
LongitudeMeasure -90.0176141000000
SourceMapScaleNumeric 24000
HorizontalAccuracyMeasure/MeasureValue 5
HorizontalAccuracyMeasure/MeasureUnitCode seconds
HorizontalCollectionMethodName Interpolated from MAP.
HorizontalCoordinateReferenceSystemDatumName NAD83
VerticalMeasure/MeasureValue 710
VerticalMeasure/MeasureUnitCode feet
VerticalAccuracyMeasure/MeasureValue 10
VerticalAccuracyMeasure/MeasureUnitCode feet
VerticalCollectionMethodName Interpolated from topographic map.
VerticalCoordinateReferenceSystemDatumName NGVD29
CountryCode US
StateCode 17
CountyCode 095
AquiferName Pennsylvanian aquifers
FormationTypeText Pennsylvanian System
WellDepthMeasure/MeasureValue 880
WellDepthMeasure/MeasureUnitCode ft
ProviderName NWIS