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USGS 05586300 ILLINOIS RIVER AT FLORENCE, IL

  Stream Site

DESCRIPTION:
Latitude 39°37'57.9",   Longitude 90°36'27.6"   NAD83
Pike County, Illinois, Hydrologic Unit 07130011
Drainage area: 26,870 square miles
Datum of gage: 404.46 feet above   NAVD88.
AVAILABLE DATA:
Data Type Begin Date End Date Count
 Current / Historical Observations     (availability statement)    2012-05-26  2025-07-08  
 Daily Data
    Temperature, water, degrees Celsius  2012-06-02  2025-07-07  13895 
    Gage height, feet  2012-05-26  2025-07-07  4645 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2012-06-01  2025-07-07  13355 
    Dissolved oxygen, water, unfiltered, milligrams per liter  2012-06-02  2025-07-07  4637 
    pH, water, unfiltered, field, standard units  2012-06-01  2025-07-07  12451 
    Dissolved organic matter fluorescence (fDOM), water, in situ, concentration estimated from reference material, micrograms per liter as quinine sulfate equivalents (QSE)  2014-11-06  2020-03-02  5103 
    Chlorophyll fluorescence (fChl), water, in situ, concentration estimated from reference material, micrograms per liter as chlorophyll  2022-07-09  2025-07-07  3069 
    Phycocyanin fluorescence (fPC), water, in situ, concentration estimated from reference material, micrograms per liter as phycocyanin  2014-04-04  2025-07-07  11632 
    Orthophosphate, water, in situ, milligrams per liter as phosphorus  2013-04-25  2019-10-25  3643 
    Orthophosphate, water, in situ, milligrams per liter as phosphorus  2021-03-31  2024-07-14  1302 
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU) -- (YSI)  2012-06-01  2025-07-07  13706 
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU) -- (HACH)  2015-06-03  2025-07-07  10187 
    Suspended sediment concentration, milligrams per liter  1980-02-13  2014-09-29  12647 
    Suspended sediment discharge, short tons per day  1980-02-13  2014-09-29  12647 
    Nitrate plus nitrite, water, unfiltered, pounds of nitrogen per day  2022-07-09  2025-07-07  1045 
    Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen  2012-06-02  2025-07-07  13449 
 Daily Statistics 
    Temperature, water, degrees Celsius  2012-06-02  2025-02-24 4498 
    Gage height, feet  2012-05-26  2025-04-29 4576 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2012-06-02  2025-02-24 4318 
    Dissolved oxygen, water, unfiltered, milligrams per liter  2012-06-02  2025-02-24 4506 
    Dissolved organic matter fluorescence (fDOM), water, in situ, concentration estimated from reference material, micrograms per liter as quinine sulfate equivalents (QSE)  2014-11-06  2020-03-02 1705 
    Chlorophyll fluorescence (fChl), water, in situ, concentration estimated from reference material, micrograms per liter as chlorophyll  2024-10-02  2025-02-24 129 
    Phycocyanin fluorescence (fPC), water, in situ, concentration estimated from reference material, micrograms per liter as phycocyanin  2014-04-04  2025-02-24 3731 
    Orthophosphate, water, in situ, milligrams per liter as phosphorus  2013-04-26  2019-10-25 1210 
    Orthophosphate, water, in situ, milligrams per liter as phosphorus  2021-03-31  2024-07-14 434 
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU) -- (YSI)  2012-06-02  2024-12-17 4379 
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU) -- (HACH)  2015-06-04  2024-12-17 3195 
    Suspended sediment concentration, milligrams per liter  1980-02-13  2014-09-29 12647 
    Suspended sediment discharge, short tons per day  1980-02-13  2014-09-29 12647 
    Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen  2012-06-02  2024-03-12 4027 
 Monthly Statistics 
    Temperature, water, degrees Celsius  2012-06  2025-02  
    Gage height, feet  2012-05  2025-04  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2012-06  2025-02  
    Dissolved oxygen, water, unfiltered, milligrams per liter  2012-06  2025-02  
    Dissolved organic matter fluorescence (fDOM), water, in situ, concentration estimated from reference material, micrograms per liter as quinine sulfate equivalents (QSE)  2014-11  2020-03  
    Chlorophyll fluorescence (fChl), water, in situ, concentration estimated from reference material, micrograms per liter as chlorophyll  2024-10  2025-02  
    Phycocyanin fluorescence (fPC), water, in situ, concentration estimated from reference material, micrograms per liter as phycocyanin  2014-04  2025-02  
    Orthophosphate, water, in situ, milligrams per liter as phosphorus  2013-04  2019-10  
    Orthophosphate, water, in situ, milligrams per liter as phosphorus  2021-03  2024-07  
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU) -- (YSI)  2012-06  2024-12  
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU) -- (HACH)  2015-06  2024-12  
    Suspended sediment concentration, milligrams per liter  1980-02  2014-09  
    Suspended sediment discharge, short tons per day  1980-02  2014-09  
    Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen  2012-06  2024-03  
 Annual Statistics 
    Temperature, water, degrees Celsius  2012  2025  
    Gage height, feet  2012  2025  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2012  2025  
    Dissolved oxygen, water, unfiltered, milligrams per liter  2012  2025  
    Dissolved organic matter fluorescence (fDOM), water, in situ, concentration estimated from reference material, micrograms per liter as quinine sulfate equivalents (QSE)  2015  2020  
    Chlorophyll fluorescence (fChl), water, in situ, concentration estimated from reference material, micrograms per liter as chlorophyll  2025  2025  
    Phycocyanin fluorescence (fPC), water, in situ, concentration estimated from reference material, micrograms per liter as phycocyanin  2014  2025  
    Orthophosphate, water, in situ, milligrams per liter as phosphorus  2013  2020  
    Orthophosphate, water, in situ, milligrams per liter as phosphorus  2021  2024  
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU) -- (YSI)  2012  2025  
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU) -- (HACH)  2015  2025  
    Suspended sediment concentration, milligrams per liter  1980  2014  
    Suspended sediment discharge, short tons per day  1980  2014  
    Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen  2012  2024  
 Field measurements 2012-08-03  2018-12-13  48 
 Field/Lab water-quality samples 2012-02-19  2024-03-05  614 
 Water-Year Summary 2012  2024  13 
 Revisions  Loading...
OPERATION:
Record for this site is maintained by the USGS Illinois Water Science Center
Email questions about this site to Illinois Water Science Center Water-Data Inquiries