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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-IL >  USGS-05556200

ILLINOIS RIVER AT HENNEPIN, IL (USGS-05556200) 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 Illinois Water Science Center (identifier USGS-IL), has the name "ILLINOIS RIVER AT HENNEPIN, IL" and has the identifier USGS-05556200. This site is in the watershed defined by the 8 digit Hydrologic Unit Code (HUC)07130001. See more details of this site the the USGS NWIS Web page for this site. This site has a drainage area of 12756.00 sq mi and the contributing drainage area is 12756.00 sq mi.

This site is located in Putnam County County, Illinois at 41.25725880000000 degrees latitude and -89.3459225000000 degrees longitude using the datum NAD83. The horizontal location collection method was "Interpolated from MAP." and the accuracy is Unknown Unknown. The source map scale is 1:24000.

To download the metadata about this site along with water quality data, go to the Portal Page and enter "USGS-05556200" 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 2007 - 2008
Inorganics, Major, Metals 1980 - 1997
Inorganics, Major, Non-metals 1977 - 2008
Inorganics, Minor, Metals 1977 - 1997
Inorganics, Minor, Non-metals 1977 - 1997
Microbiological 1978 - 2008
Nutrient 1977 - 1997
Organics, Other 1986 - 1997
Physical 1977 - 2008
*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-05556200
MonitoringLocationName ILLINOIS RIVER AT HENNEPIN, IL
MonitoringLocationTypeName Stream
HUCEightDigitCode 07130001
DrainageAreaMeasure/MeasureValue 12756.00
DrainageAreaMeasure/MeasureUnitCode sq mi
ContributingDrainageAreaMeasure/MeasureValue 12756.00
ContributingDrainageAreaMeasure/MeasureUnitCode sq mi
LatitudeMeasure 41.25725880000000
LongitudeMeasure -89.3459225000000
SourceMapScaleNumeric 24000
HorizontalAccuracyMeasure/MeasureValue Unknown
HorizontalAccuracyMeasure/MeasureUnitCode Unknown
HorizontalCollectionMethodName Interpolated from MAP.
HorizontalCoordinateReferenceSystemDatumName NAD83
CountryCode US
StateCode 17
CountyCode 155
ProviderName NWIS