Warning: Javascript must be enabled to use all the features on this page!


Page Loading - Please Wait...

Click to hideNews Bulletins
! This page is undergoing modernization with expected decommissioning as key features are added to the modernized pages.
Learn more about our modernization plans to find out which options will suit you best. Next Generation Monitoring Location Page is available now.
A beta version of the My Favorites page is available in WDFN. Try it out and tell us what you think at wdfn@usgs.gov

USGS 05543010 ILLINOIS RIVER AT SENECA, IL

PROVISIONAL DATA SUBJECT TO REVISION

Click to hidestation-specific text
This site is operated in cooperation with the

Cooperator logo Exelon Corporation





Real-time tagged fish detections near this site
This station managed by the Urbana Field Office.

Available Parameters Available Period
  
2025-04-15  2026-01-22
2012-10-16  2025-04-15
2013-07-18  2026-01-22
2025-04-15  2026-01-22
2013-06-27  2025-04-15
2025-04-15  2026-01-22
2013-06-27  2025-04-15
2025-04-15  2026-01-22
2013-06-27  2025-04-15
2013-06-27  2025-04-15
2025-04-15  2026-01-22
2013-06-27  2025-04-15
2025-04-15  2026-01-22
2025-04-15  2026-01-22
2013-06-27  2025-04-15
2025-04-15  2026-01-22
2013-07-18  2025-04-15







 (7)
 
  -- or --

 

 
Summary of all available data for this site
Instantaneous-data availability statement

Temperature, water, degrees Celsius, [BTM]
 
-- Data temporarily unavailable for the time period specified --

Temperature, water, degrees Celsius, [MID]
Most recent instantaneous value: -0.0 01-22-2026   05:45 CST
Graph of Temperature, water, degrees Celsius, [MID]

Add up to 2 more sites and replot for "Temperature, water, degrees Celsius, [MID]"

?
 
Note



Create presentation-quality / stand-alone graph.   Subscribe to
?
WaterAlert      

See this graph on the Monitoring Location Pages

Share this graph |


Gage height, feet
Most recent instantaneous value: 20.24 01-22-2026   05:45 CST
Graph of Gage height, feet

Add up to 2 more sites and replot for "Gage height, feet"

?
 
Note



Create presentation-quality / stand-alone graph.   Subscribe to
?
WaterAlert      

See this graph on the Monitoring Location Pages

Share this graph |


Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius, [BTM]
 
-- Data temporarily unavailable for the time period specified --

Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius, [MID]
Most recent instantaneous value: 1230 01-22-2026   05:45 CST
Graph of Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius, [MID]

Add up to 2 more sites and replot for "Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius, [MID]"

?
 
Note



Create presentation-quality / stand-alone graph.   Subscribe to
?
WaterAlert      

See this graph on the Monitoring Location Pages

Share this graph |


Dissolved oxygen, water, unfiltered, milligrams per liter, [BTM]
 
-- Data temporarily unavailable for the time period specified --

Dissolved oxygen, water, unfiltered, milligrams per liter, [MID]
Most recent instantaneous value: 14.7 01-22-2026   05:45 CST
Graph of Dissolved oxygen, water, unfiltered, milligrams per liter, [MID]

Add up to 2 more sites and replot for "Dissolved oxygen, water, unfiltered, milligrams per liter, [MID]"

?
 
Note



Create presentation-quality / stand-alone graph.   Subscribe to
?
WaterAlert      

See this graph on the Monitoring Location Pages

Share this graph |


pH, water, unfiltered, field, standard units, [BTM]
 
-- Data temporarily unavailable for the time period specified --

pH, water, unfiltered, field, standard units, [MID]
Most recent instantaneous value: 9.7 01-22-2026   05:45 CST
Graph of pH, water, unfiltered, field, standard units, [MID]

Add up to 2 more sites and replot for "pH, water, unfiltered, field, standard units, [MID]"

?
 
Note



Create presentation-quality / stand-alone graph.   Subscribe to
?
WaterAlert      

See this graph on the Monitoring Location Pages

Share this graph |


Chlorophyll fluorescence (fChl), water, in situ, concentration estimated from reference material, micrograms per liter as chlorophyll, [BTM]
 
-- Data temporarily unavailable for the time period specified --

Chlorophyll fluorescence (fChl), water, in situ, concentration estimated from reference material, micrograms per liter as chlorophyll, [MID]
Most recent instantaneous value: 4.35 01-22-2026   05:45 CST
Graph of Chlorophyll fluorescence (fChl), water, in situ, concentration estimated from reference material, micrograms per liter as chlorophyll, [MID]

Add up to 2 more sites and replot for "Chlorophyll fluorescence (fChl), water, in situ, concentration estimated from reference material, micrograms per liter as chlorophyll, [MID]"

?
 
Note



Create presentation-quality / stand-alone graph.   Subscribe to
?
WaterAlert      

See this graph on the Monitoring Location Pages

Share this graph |


Phycocyanin fluorescence (fPC), water, in situ, concentration estimated from reference material, micrograms per liter as phycocyanin, [BTM]
 
-- Data temporarily unavailable for the time period specified --

Phycocyanin fluorescence (fPC), water, in situ, concentration estimated from reference material, micrograms per liter as phycocyanin, [MID]
Most recent instantaneous value: 0.23 01-22-2026   05:45 CST
Graph of Phycocyanin fluorescence (fPC), water, in situ, concentration estimated from reference material, micrograms per liter as phycocyanin, [MID]

Add up to 2 more sites and replot for "Phycocyanin fluorescence (fPC), water, in situ, concentration estimated from reference material, micrograms per liter as phycocyanin, [MID]"

?
 
Note



Create presentation-quality / stand-alone graph.   Subscribe to
?
WaterAlert      

See this graph on the Monitoring Location Pages

Share this graph |


Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU), [BTM]
 
-- Data temporarily unavailable for the time period specified --

Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU), [MID]
Most recent instantaneous value: 6.0 01-22-2026   05:45 CST
Graph of Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU), [MID]

Add up to 2 more sites and replot for "Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU), [MID]"

?
 
Note



Create presentation-quality / stand-alone graph.   Subscribe to
?
WaterAlert      

See this graph on the Monitoring Location Pages

Share this graph |


Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen, [BTM]
 
-- Data temporarily unavailable for the time period specified --

Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen, [MID]
Most recent instantaneous value: 4.8 01-22-2026   05:45 CST
Graph of Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen, [MID]

Add up to 2 more sites and replot for "Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen, [MID]"

?
 
Note



Create presentation-quality / stand-alone graph.   Subscribe to
?
WaterAlert      

See this graph on the Monitoring Location Pages

Share this graph |