USGS Surface Water for USA: Peak Streamflow

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Peak Streamflow for the Nation

USGS 05587500 Mississippi River at Alton, IL

Madison County, Illinois

Hydrologic Unit Code 07110009

Latitude 38°53'06", Longitude 90°10'51" NAD27

Drainage area 171,500 square miles

Gage datum 403 feet above NAVD88

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: 2024-04-26 13:16:54 EDT
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