USGS Surface Water for USA: Peak Streamflow

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Peak Streamflow for the Nation

USGS 05542500 ILLINOIS RIVER AT MORRIS, IL

Grundy County, Illinois

Hydrologic Unit Code 07120005

Latitude 41°21'16.5", Longitude 88°25'42.6" NAD83

Drainage area 7,483.00 square miles

Gage datum 478.17 feet above NAVD88

Water Year	Date	Gage Height (feet)	Stream- flow (cfs)
2017	2017-05-02	17.78	44,400⁶
2018	2018-02-22	23.71	89,300⁶
2019	2019-05-02	23.03	81,200⁶
2020	2020-05-19	24.80	103,000⁶
2021	2021-06-29	16.56	46,700⁶
2022	2021-10-26	15.92	44,600⁶
2023	2023-02-28	13.14	34,400⁶
2024	2024-01-27	16.74	47,400⁶

Peak Streamflow Qualification Codes.

U.S. Department of the Interior | U.S. Geological Survey
Title: Surface Water for USA: Peak Streamflow
URL: https://nwis.waterdata.usgs.gov/nwis/peak?

Page Contact Information: USGS Water Data Support Team
Page Last Modified: 2025-02-18 13:39:23 EST
0.19 0.19 nadww01