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USGS Daily Statistics for Illinois

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The statistics generated from this site are based on approved daily-mean data and may not match those published by the USGS in official publications. The user is responsible for assessment and use of statistics from this site. For more details on why the statistics may not match, click here.

USGS 05585500 ILLINOIS RIVER AT MEREDOSIA, IL


Morgan County, Illinois
Hydrologic Unit Code 07130011
Latitude  39°49'52.2", Longitude  90°33'35.4" NAD83
Drainage area 26,029  square miles
Gage datum 417.68 feet above NAVD88
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00060, Discharge, cubic feet per second,
Day of
month		 Mean of daily mean values for each day for water year of record in, ft3/s   (Calculation Period 1938-10-01 -> 1989-09-30)

Calculation period restricted by USGS staff due to special conditions at/near site
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1 18,800 18,900 29,200 36,700 38,800 30,500 25,900 15,700 10,600 12,900 11,900 15,700
2 19,200 19,000 29,200 36,800 38,500 30,600 25,700 15,400 10,600 12,900 12,100 15,700
3 19,300 18,900 29,400 37,000 38,600 30,400 25,400 14,800 11,000 13,000 12,400 15,800
4 19,600 19,100 29,500 37,100 38,100 29,900 24,900 14,400 11,100 12,900 12,300 16,100
5 20,000 19,700 29,900 37,400 38,100 29,500 24,500 14,100 10,700 13,100 12,500 16,300
6 20,000 20,200 29,900 37,700 37,800 29,300 24,000 14,300 10,500 13,000 12,700 16,600
7 19,800 20,600 30,300 38,000 37,400 28,800 23,600 14,600 10,200 13,000 12,800 16,800
8 19,700 20,800 30,300 38,200 36,900 28,500 23,100 14,600 10,000 13,000 12,700 17,200
9 19,400 21,000 30,100 38,100 36,400 28,000 22,700 14,400 9,790 12,900 12,600 17,500
10 19,600 21,900 30,300 37,800 36,300 27,700 22,400 14,200 9,680 12,700 12,600 17,300
11 19,800 22,300 30,300 37,700 35,900 27,700 22,000 14,100 9,400 12,700 12,900 17,400
12 19,400 22,300 30,500 37,600 35,500 27,400 21,300 13,800 9,300 12,800 13,100 17,500
13 19,100 22,700 30,900 37,400 34,900 27,600 20,400 13,700 9,430 13,000 13,200 17,500
14 19,000 22,700 31,200 37,500 34,400 27,400 19,900 13,300 9,740 13,100 13,300 17,400
15 19,000 22,900 31,700 37,500 34,200 27,200 19,500 13,000 9,770 13,100 13,200 17,500
16 19,100 23,300 32,500 37,300 34,100 27,300 19,100 12,800 10,100 13,000 13,300 17,500
17 19,200 23,800 33,200 37,300 33,900 27,500 18,600 12,400 10,500 13,000 13,200 17,900
18 19,000 24,200 33,600 37,300 34,000 27,400 18,100 12,400 10,500 12,900 13,200 17,900
19 18,800 24,800 33,800 37,400 34,400 27,200 17,800 12,300 10,600 12,600 13,400 17,500
20 18,500 25,600 34,200 37,600 34,400 27,200 17,500 12,200 11,000 12,400 13,700 17,200
21 18,100 26,100 34,700 37,800 34,300 27,200 17,400 12,100 11,300 12,100 14,200 17,000
22 18,100 27,000 34,800 37,900 34,300 27,300 17,700 11,900 11,200 11,800 14,600 16,900
23 18,300 27,800 35,200 38,100 34,100 27,000 17,400 11,700 11,500 11,900 14,800 16,900
24 18,800 28,500 35,500 38,200 33,900 26,900 17,800 11,100 11,500 11,700 15,000 16,800
25 19,000 28,900 35,600 38,400 33,400 26,900 17,800 10,800 11,800 11,700 15,000 17,000
26 19,300 29,400 36,000 38,400 33,000 26,600 17,600 10,700 12,300 11,800 15,000 17,400
27 19,300 29,500 36,100 38,700 32,400 26,500 17,500 10,500 12,200 11,900 14,900 17,600
28 19,100 29,200 36,200 38,800 32,100 26,000 17,200 10,400 12,200 11,700 15,000 17,800
29 18,600 24,700 36,200 38,800 31,800 25,800 16,900 10,500 12,300 11,700 15,300 18,100
30 18,700   36,300 38,800 31,400 26,000 16,500 10,500 12,600 11,600 15,400 18,500
31 18,900   36,500   30,900   16,100 10,500   11,500   18,700