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USGS Daily Statistics for the Nation

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 -> 2019-09-30)

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