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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 403.32 feet above NAVD88
Output formats
Table
Graph
Tab-separated file
peakfq (watstore) format
Reselect output format
Water
Year		 Date Gage
Height
(feet)		 Stream-
flow
(cfs)
1844 1844-06 32.10Bd  
1987 1986-10-10 29.67 423,0005
1988 1987-12-29 17.22 187,0005
1989 1989-04-05 14.812,5 163,0005
1990 1990-06-26 24.46 340,0005
1991 1991-05-08 21.52 294,0005
1992 1992-05-02 17.812,5 235,0005
1993 1993-08-01 38.17 598,0005
1994 1993-10-01 27.28 345,0005
1995 1995-05-28 30.322,5 419,0005
1996 1996-06-01 26.452,5 336,0005
1997 1997-03-01 23.86 305,0005
1998 1998-04-17 25.81 358,0005
1999 1999-05-04 23.05 296,0005
2000 2000-06-29 20.37 291,0005
2001 2001-05-19 25.19 367,0005
2002 2002-05-15 27.66 380,0005
2003 2003-05-12 18.74 249,0005
2004 2004-06-05 21.41 307,0005
2005 2005-01-14 17.832 239,0005
2006 2006-04-24 16.47 217,0005
2007 2007-04-16 19.83 269,0005
2008 2008-06-28 30.80 440,0005
2009 2009-05-20 24.92 347,0005
2010 2010-06-27 26.542 372,0005
2011 2011-05-01 25.93 362,0005
2012 2012-05-06 16.37 219,0005
2013 2013-04-25 29.522 453,0005
2014 2014-07-11 25.99 376,0005
2015 2015-06-30 29.51 409,0005
2016 2015-12-30 30.792 412,0005
2017 2017-05-09 26.642 376,0005
2018 2018-09-12 20.93 286,0005
2019 2019-06-07 35.17 523,0005
2020 2020-03-30 22.382 304,0006
2021 2021-04-14 20.632 282,0006
2022 2022-05-07 21.202 287,0006
2023 2023-05-10 20.80 285,0006
2024 2024-07-10 23.46 324,0006
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  Peak Gage-Height Qualification Codes.
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  Peak Streamflow Qualification Codes.