USGS 05446500 ROCK RIVER NEAR JOSLIN, IL

PROVISIONAL DATA SUBJECT TO REVISION

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This site is operated in cooperation with the

Cooperator logo U.S. Army Corps of Engineers
Rock Island District - Rock Island, Illinois

and

Cooperator logo Illinois Environmental Protection Agency





NWS River Forecasts

Note: Provisional nitrate plus nitrite load values might not reflect updated discharge and/or nitrate plus nitrite concentration data.
This station managed by the De Kalb Field Office.

Available Parameters Available Period
  
2015-06-26  2020-12-18
1986-09-01  2025-09-01
2007-10-01  2025-09-01
2015-06-26  2020-12-18
2015-06-26  2020-12-18
2015-06-26  2020-12-18
2015-06-26  2017-04-21
2015-06-26  2020-12-18
2015-06-26  2025-09-01
2015-06-26  2025-09-01
2015-06-26  2025-09-01







 (7)
 
  -- or --

 

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

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

Discharge, cubic feet per second
Most recent instantaneous value: 8630 09-01-2025   01:45 CST
Graph of Discharge, cubic feet per second

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Daily discharge, cubic feet per second -- statistics for Sep 1 based on 85 water years of record more
Min
(1958)		 25th
percen-
tile		 Median Mean 75th
percen-
tile		 Most Recent
Instantaneous
Value Sep 1		 Max
(2007)
1270 2230 4060 5000 5790 8630 27200

Gage height, feet
Most recent instantaneous value: 7.72 09-01-2025   01:45 CST
Graph of

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Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius, [Discontinued 12/18/20]
 
-- Data temporarily unavailable for the time period specified --

Dissolved oxygen, water, unfiltered, milligrams per liter, [Discontinued 12/18/20]
 
-- Data temporarily unavailable for the time period specified --

pH, water, unfiltered, field, standard units, [Discontinued 12/18/20]
 
-- Data temporarily unavailable for the time period specified --

Orthophosphate, water, in situ, milligrams per liter as phosphorus
 
-- 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), (HACH)
Most recent instantaneous value: 37.1 09-01-2025   02:00 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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Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU), (YSI), [Discontinued 12/18/20]
 
-- Data temporarily unavailable for the time period specified --

Nitrate plus nitrite, water, unfiltered, pounds of nitrogen per day
Most recent instantaneous value: 98000 09-01-2025   01:45 CST
Graph of Nitrate plus nitrite, water, unfiltered, pounds of nitrogen per day

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Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen
Most recent instantaneous value: 2.1 09-01-2025   02:00 CST
Graph of Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen

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