USGS Surface Water for USA: Peak Streamflow

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Peak Streamflow for the Nation

Cook County, Illinois

Hydrologic Unit Code 07120004

Latitude 42°01'54", Longitude 87°52'41" NAD83

Drainage area 403.8 square miles

Gage datum 610.24 feet above NAVD88

Water Year	Date	Gage Height (feet)	Stream- flow (cfs)
2019	2019-09-15	17.92	3,790^C
2020	2020-05-18	20.24	4,840^C
2021	2021-06-26	13.43	1,650^C
2022	2022-05-03	14.50	2,060^C
2023	2023-04-05	15.66	2,560^C

Peak Streamflow Qualification Codes.

C -- All or part of the record affected by Urbanization, Mining, Agricultural changes, Channelization, or other

USGS 05530100 DES PLAINES R AT ALGONQUIN RD AT DES PLAINES, IL