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Peak Streamflow for the Nation

USGS 05587450 Mississippi River at Grafton, IL


Jersey County, Illinois
Hydrologic Unit Code 07110009
Latitude  38°58'04.7", Longitude  90°25'44.4" NAD83
Drainage area 171,300  square miles
Gage datum 403.79 feet above NGVD29
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Graph of annual maximum streamflow at USGS 05587450 Mississippi River at Grafton, IL
Download a presentation-quality graph