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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°42'12", Longitude  90°38'43" NAD27
Drainage area 26,743  square miles
Gage datum 418.00 feet above NGVD29
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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 -> 2021-09-30)

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