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USGS 05543010 ILLINOIS RIVER AT SENECA, IL

  Stream Site

DESCRIPTION:
Latitude 41°17'59.6",   Longitude 88°36'51.1"   NAD83
Lasalle County, Illinois, Hydrologic Unit 07120005
Drainage area: 8,215 square miles
Datum of gage: 462.58 feet above   NAVD88.
AVAILABLE DATA:
Data Type Begin Date End Date Count
 Current / Historical Observations     (availability statement)    2012-10-16  2025-04-15  
 Daily Data
    Temperature, water, degrees Celsius  2012-10-16  2025-04-14  13247 
    Temperature, water, degrees Celsius  2025-04-16  2025-07-06  246 
    Gage height, feet  2013-07-18  2025-07-06  4298 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2013-06-26  2025-04-14  10467 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2025-04-16  2025-07-06  218 
    Dissolved oxygen, water, unfiltered, milligrams per liter  2013-06-27  2025-04-14  10959 
    Dissolved oxygen, water, unfiltered, milligrams per liter  2025-04-16  2025-07-06  164 
    pH, water, unfiltered, field, standard units  2013-06-26  2025-04-14  9727 
    pH, water, unfiltered, field, standard units  2025-04-16  2025-07-06  243 
    Chlorophyll fluorescence (fChl), water, in situ, concentration estimated from reference material, micrograms per liter as chlorophyll  2024-09-03  2025-04-14  648 
    Chlorophyll fluorescence (fChl), water, in situ, concentration estimated from reference material, micrograms per liter as chlorophyll  2025-04-16  2025-07-06  228 
    Phycocyanin fluorescence (fPC), water, in situ, concentration estimated from reference material, micrograms per liter as phycocyanin  2013-06-26  2025-04-14  10509 
    Phycocyanin fluorescence (fPC), water, in situ, concentration estimated from reference material, micrograms per liter as phycocyanin  2025-04-16  2025-07-06  228 
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2013-06-26  2025-04-14  10530 
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2025-04-16  2025-07-06  243 
    Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen  2013-07-18  2025-04-14  7165 
    Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen  2025-04-16  2025-07-06  237 
 Daily Statistics 
    Temperature, water, degrees Celsius  2012-10-16  2025-04-14 4411 
    Gage height, feet  2013-07-18  2025-04-14 4215 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2013-06-27  2025-04-14 3553 
    Dissolved oxygen, water, unfiltered, milligrams per liter  2013-06-27  2025-04-14 3647 
    Chlorophyll fluorescence (fChl), water, in situ, concentration estimated from reference material, micrograms per liter as chlorophyll  2024-09-04  2024-12-17 97 
    Phycocyanin fluorescence (fPC), water, in situ, concentration estimated from reference material, micrograms per liter as phycocyanin  2013-06-27  2024-12-17 3337 
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2013-06-27  2025-02-26 3461 
    Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen  2013-07-18  2024-12-17 3460 
 Monthly Statistics 
    Temperature, water, degrees Celsius  2012-10  2025-04  
    Gage height, feet  2013-07  2025-04  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2013-06  2025-04  
    Dissolved oxygen, water, unfiltered, milligrams per liter  2013-06  2025-04  
    Chlorophyll fluorescence (fChl), water, in situ, concentration estimated from reference material, micrograms per liter as chlorophyll  2024-09  2024-12  
    Phycocyanin fluorescence (fPC), water, in situ, concentration estimated from reference material, micrograms per liter as phycocyanin  2013-06  2024-12  
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2013-06  2025-02  
    Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen  2013-07  2024-12  
 Annual Statistics 
    Temperature, water, degrees Celsius  2013  2025  
    Gage height, feet  2013  2025  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2013  2025  
    Dissolved oxygen, water, unfiltered, milligrams per liter  2013  2025  
    Chlorophyll fluorescence (fChl), water, in situ, concentration estimated from reference material, micrograms per liter as chlorophyll  2024  2025  
    Phycocyanin fluorescence (fPC), water, in situ, concentration estimated from reference material, micrograms per liter as phycocyanin  2013  2025  
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2013  2025  
    Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen  2013  2025  
 Field measurements 2022-06-02  2022-06-02  1 
 Field/Lab water-quality samples 1979-04-25  2024-01-31  62 
 Water-Year Summary 2014  2024  11 
 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