USGS 05553700 ILLINOIS RIVER AT STARVED ROCK, IL

PROVISIONAL DATA SUBJECT TO REVISION

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This site is operated in cooperation with the

Cooperator logo Illinois Environmental Protection Agency





This station managed by the De Kalb Field Office.

Available Parameters Available Period
  
2018-06-05  2022-03-15
2021-09-23  2026-07-19
2018-06-05  2022-04-12
2021-09-23  2026-07-19
2018-06-05  2022-04-12
2021-09-23  2026-07-19
2018-06-05  2022-04-12
2021-09-23  2026-07-19
2018-06-07  2022-04-12
2021-09-23  2026-07-19
2018-06-05  2022-04-12
2021-09-23  2026-07-19
2022-03-15  2026-07-19
2021-09-23  2026-07-19
2026-01-18  2026-07-18
2021-09-23  2026-07-19







 (7)
 
  -- or --

 

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

Temperature, water, degrees Celsius, BN
Most recent instantaneous value: 30.7 07-19-2026   01:00 CST
Graph of Temperature, water, degrees Celsius

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Temperature, water, degrees Celsius, SHD
 
-- Data temporarily unavailable for the time period specified --

Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius, BN
Most recent instantaneous value: 738 07-19-2026   01:00 CST
Graph of Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius

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

Dissolved oxygen, water, unfiltered, milligrams per liter, BN
Most recent instantaneous value: 9.7 07-19-2026   01:00 CST
Graph of Dissolved oxygen, water, unfiltered, milligrams per liter

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

pH, water, unfiltered, field, standard units, BN
Most recent instantaneous value: 8.5 07-19-2026   01:00 CST
Graph of pH, water, unfiltered, field, standard units

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

Chlorophyll fluorescence (fChl), water, in situ, concentration estimated from reference material, micrograms per liter as chlorophyll, BN
Most recent instantaneous value: 43.40 07-19-2026   01:00 CST
Graph of Chlorophyll fluorescence (fChl), water, in situ, concentration estimated from reference material, micrograms per liter as chlorophyll

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

Phycocyanin fluorescence (fPC), water, in situ, concentration estimated from reference material, micrograms per liter as phycocyanin, BN
Most recent instantaneous value: 2.38 07-19-2026   01:00 CST
Graph of Phycocyanin fluorescence (fPC), water, in situ, concentration estimated from reference material, micrograms per liter as phycocyanin

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

Orthophosphate, water, in situ, milligrams per liter as phosphorus, BN
Most recent instantaneous value: 0.216 07-19-2026   01:00 CST
Graph of Orthophosphate, water, in situ, milligrams per liter as phosphorus

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Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU), BN
Most recent instantaneous value: 14.7 07-19-2026   01:00 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)

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Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen, BN
Most recent instantaneous value: 2.82 07-19-2026   01:00 CST
Graph of Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen

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