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| Data Type | Begin Date | End Date | Count |
|---|---|---|---|
| Current / Historical Observations (availability statement) | 1987-03-05 | 2025-12-15 | |
| Daily Data | |||
| Temperature, water, degrees Celsius | 2015-06-26 | 2021-10-19 | 5005 |
| Discharge, cubic feet per second | 1936-03-01 | 2025-12-14 | 32791 |
| Gage height, feet | 1993-10-01 | 2025-12-14 | 11412 |
| Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius | 2015-06-26 | 2021-10-19 | 4820 |
| Dissolved oxygen, water, unfiltered, milligrams per liter | 2015-06-26 | 2021-10-19 | 4289 |
| pH, water, unfiltered, field, standard units | 2015-06-26 | 2021-10-19 | 4707 |
| Orthophosphate, water, in situ, milligrams per liter as phosphorus | 2015-08-21 | 2016-08-24 | 258 |
| Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU) -- (YSI) | 2015-06-26 | 2021-10-11 | 3960 |
| Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU) -- (HACH) | 2015-06-26 | 2025-12-14 | 5905 |
| Suspended sediment concentration, milligrams per liter | 1978-03-24 | 1981-09-29 | 1286 |
| Suspended sediment discharge, short tons per day | 1978-03-24 | 1981-09-29 | 1286 |
| Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen | 2015-06-26 | 2025-12-14 | 7878 |
| Daily Statistics | |||
| Temperature, water, degrees Celsius | 2015-06-26 | 2021-10-19 | 1667 |
| Discharge, cubic feet per second | 1936-03-01 | 2025-09-17 | 32708 |
| Gage height, feet | 1993-10-01 | 2025-09-17 | 11329 |
| Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius | 2015-06-26 | 2021-10-19 | 1604 |
| Dissolved oxygen, water, unfiltered, milligrams per liter | 2015-06-26 | 2021-10-19 | 1425 |
| Orthophosphate, water, in situ, milligrams per liter as phosphorus | 2015-08-21 | 2016-08-24 | 86 |
| Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU) -- (YSI) | 2015-06-26 | 2021-10-11 | 1312 |
| Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU) -- (HACH) | 2015-06-26 | 2025-06-19 | 1790 |
| Suspended sediment concentration, milligrams per liter | 1978-03-24 | 1981-09-29 | 1286 |
| Suspended sediment discharge, short tons per day | 1978-03-24 | 1981-09-29 | 1286 |
| Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen | 2015-06-26 | 2025-08-26 | 2510 |
| Monthly Statistics | |||
| Temperature, water, degrees Celsius | 2015-06 | 2021-10 | |
| Discharge, cubic feet per second | 1936-03 | 2025-09 | |
| Gage height, feet | 1993-10 | 2025-09 | |
| Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius | 2015-06 | 2021-10 | |
| Dissolved oxygen, water, unfiltered, milligrams per liter | 2015-06 | 2021-10 | |
| Orthophosphate, water, in situ, milligrams per liter as phosphorus | 2015-08 | 2016-08 | |
| Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU) -- (YSI) | 2015-06 | 2021-10 | |
| 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 | 2025-06 | |
| Suspended sediment concentration, milligrams per liter | 1978-03 | 1981-09 | |
| Suspended sediment discharge, short tons per day | 1978-03 | 1981-09 | |
| Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen | 2015-06 | 2025-08 | |
| Annual Statistics | |||
| Temperature, water, degrees Celsius | 2015 | 2022 | |
| Discharge, cubic feet per second | 1936 | 2025 | |
| Gage height, feet | 1994 | 2025 | |
| Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius | 2015 | 2022 | |
| Dissolved oxygen, water, unfiltered, milligrams per liter | 2015 | 2022 | |
| Orthophosphate, water, in situ, milligrams per liter as phosphorus | 2015 | 2016 | |
| Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU) -- (YSI) | 2015 | 2022 | |
| 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 | 1978 | 1981 | |
| Suspended sediment discharge, short tons per day | 1978 | 1981 | |
| Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen | 2015 | 2025 | |
| Peak streamflow | 1935-10-10 | 2024-04-03 | 89 |
| Field measurements | 1972-10-16 | 2025-12-03 | 450 |
| Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP) | 1966-10-03 | 2024-03-07 | 621 |
| Water-Year Summary | 2006 | 2024 | 19 |
| Revisions | Loading... | ||
U.S. Department of the Interior |
U.S. Geological Survey
Title: NWIS Site Information for Illinois: Site Inventory
URL:
Page Contact Information: Illinois Water Data Support Team
Page Last Modified: 2025-12-15 16:49:51 EST
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