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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 05586100 ILLINOIS RIVER AT VALLEY CITY, IL


Scott County, Illinois
Hydrologic Unit Code 07130011
Latitude  39°42'11.5", Longitude  90°38'35.1" NAD83
Drainage area 26,743  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 -> 2024-09-30)

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 20,500 22,500 31,400 37,200 38,800 35,500 30,600 17,700 11,900 13,000 13,700 17,200
2 21,100 22,500 31,500 37,300 38,600 35,500 30,400 17,000 11,700 12,800 14,100 17,500
3 21,500 22,500 31,800 37,200 38,800 35,300 30,000 16,300 11,900 12,900 14,500 17,700
4 21,900 22,600 32,000 37,100 38,800 34,900 29,300 15,900 12,000 13,000 14,800 17,800
5 22,200 22,900 32,400 37,300 39,300 34,500 28,600 15,500 11,900 13,400 15,000 17,800
6 22,300 23,100 32,800 37,300 39,300 34,100 28,000 15,600 11,700 13,400 15,200 18,200
7 22,200 23,300 32,900 37,300 39,000 33,400 27,500 15,700 11,500 13,300 15,200 18,400
8 22,200 23,300 32,900 37,300 38,800 33,000 26,900 15,500 11,400 13,400 15,200 18,600
9 22,100 23,500 32,800 37,100 38,600 32,400 26,400 15,200 11,300 13,300 15,000 18,700
10 22,200 23,900 33,200 36,900 38,800 32,000 26,000 15,000 11,400 13,200 14,800 18,500
11 22,400 24,100 33,600 37,000 38,800 31,800 25,500 14,800 11,200 13,300 14,900 18,600
12 22,300 24,200 33,900 37,000 38,700 31,600 24,700 14,300 11,100 13,300 15,000 18,600
13 22,100 24,500 34,400 36,900 38,500 31,700 24,000 14,100 11,200 13,200 15,000 18,600
14 22,200 24,600 34,800 37,000 38,300 31,600 23,400 13,700 11,600 13,200 15,000 18,500
15 22,300 24,800 35,300 37,100 38,300 31,500 22,900 13,300 11,700 13,200 14,800 18,700
16 22,300 25,000 35,800 37,100 38,400 31,600 22,500 13,000 12,000 13,300 14,600 18,800
17 22,300 25,300 36,200 37,100 38,600 31,800 22,000 12,700 12,300 13,300 14,500 19,100
18 22,200 25,600 36,500 37,300 39,100 31,700 21,400 12,600 12,400 13,200 14,500 19,100
19 22,200 25,900 36,700 37,600 39,600 31,600 20,900 12,400 12,500 13,000 14,700 19,000
20 22,000 26,500 36,900 37,800 39,700 31,700 20,500 12,400 12,700 12,900 14,900 18,800
21 21,500 27,200 37,100 38,000 39,700 31,800 20,400 12,400 12,900 12,800 15,500 18,600
22 21,600 28,100 37,000 38,300 39,500 31,800 20,600 12,200 12,900 12,500 15,800 18,400
23 21,800 29,000 37,200 38,600 39,100 31,600 20,200 12,300 13,100 12,800 15,800 18,200
24 22,100 29,700 37,200 38,600 38,700 31,400 20,400 12,100 12,900 12,800 15,700 18,100
25 22,200 30,300 37,200 38,700 38,300 31,500 20,400 11,900 12,900 13,100 15,700 18,200
26 22,500 30,900 37,300 38,600 37,800 31,400 20,300 11,900 13,100 13,200 15,800 18,400
27 22,500 31,200 37,400 38,600 37,200 31,400 20,100 11,800 12,800 13,400 15,900 18,600
28 22,400 31,100 37,400 38,700 36,900 31,100 19,700 11,700 12,700 13,300 16,300 18,800
29 22,300 24,900 37,300 38,700 36,500 30,800 19,300 11,800 12,700 13,400 16,600 19,200
30 22,500   37,200 38,800 36,200 30,800 18,700 11,900 12,900 13,400 16,700 19,700
31 22,600   37,200   35,800   18,200 11,700   13,400   20,000