Warning: Javascript must be enabled to use all the features on this page!


Page Loading - Please Wait...

Click to hideNews Bulletins

USGS Surface-Water 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 05558300 ILLINOIS RIVER AT HENRY, IL


Marshall County, Illinois
Hydrologic Unit Code 07130001
Latitude  41°06'26.2", Longitude  89°21'22.4" NAD83
Drainage area 13,544  square miles
Gage datum 425.85 feet above NAVD88
Output formats
HTML table of all data
Tab-separated data
Reselect output format

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 1981-10-01 -> 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 16,100 13,400 23,300 22,200 23,700 21,600 17,500 10,400 9,450 8,910 12,500 14,200
2 15,900 13,400 23,000 22,700 25,400 21,700 17,100 9,680 9,190 8,410 12,600 14,700
3 15,400 13,800 22,500 22,700 24,900 21,100 16,500 9,600 9,470 8,450 12,300 15,100
4 14,800 14,200 22,200 22,500 23,500 20,100 16,400 9,580 9,300 9,350 11,800 15,200
5 15,500 14,200 22,800 22,100 22,100 19,200 15,700 10,000 8,860 9,260 11,600 15,100
6 16,000 14,200 22,300 21,700 20,600 18,700 15,100 9,860 8,490 9,220 11,500 15,500
7 15,600 14,700 21,500 22,000 20,600 18,200 14,700 9,410 8,320 9,130 11,400 15,100
8 14,800 14,700 21,600 21,800 20,700 17,900 14,200 9,050 8,930 8,870 11,000 14,900
9 14,700 14,900 22,300 21,300 21,600 17,900 13,600 9,120 9,060 8,910 10,900 14,600
10 15,400 15,000 23,200 21,300 22,400 18,600 13,200 9,030 9,100 8,620 10,800 14,500
11 15,300 15,200 25,000 21,600 22,500 19,100 13,500 8,830 9,880 8,320 11,000 14,200
12 15,400 15,500 25,300 21,200 22,900 19,100 13,600 8,520 9,560 8,410 10,900 14,100
13 15,200 15,100 24,800 22,000 23,400 18,700 13,800 8,510 9,940 8,500 11,200 14,800
14 15,800 15,000 24,500 21,500 23,800 19,200 14,000 8,390 10,800 9,000 11,200 14,300
15 16,100 15,200 25,100 21,800 24,000 19,400 13,600 8,390 11,500 9,430 10,900 14,400
16 15,800 15,600 24,700 22,800 23,600 19,500 12,900 8,200 11,800 9,780 10,700 14,700
17 15,300 15,700 24,000 23,200 23,000 19,400 12,200 8,430 11,400 9,640 10,500 14,100
18 14,700 16,400 23,600 23,200 22,500 19,000 12,400 8,530 10,400 10,000 10,600 13,700
19 14,500 17,100 23,600 24,600 22,400 18,700 13,400 8,500 10,200 10,400 11,500 13,100
20 13,800 17,900 24,700 24,300 22,100 18,300 14,600 8,780 9,920 10,200 12,100 12,700
21 13,800 19,300 24,900 23,500 20,900 18,800 14,300 8,780 9,560 9,620 13,200 12,600
22 14,000 21,300 24,100 22,700 20,100 18,700 13,900 9,280 9,240 9,610 12,500 12,600
23 14,100 22,500 23,800 22,400 20,000 19,100 14,200 9,270 9,140 9,670 12,400 13,100
24 14,700 23,200 23,700 22,200 19,700 19,200 14,100 9,700 8,870 10,100 12,200 13,700
25 14,900 23,200 23,900 21,400 19,600 18,700 14,000 10,300 8,480 10,800 12,400 13,800
26 14,700 23,300 22,800 20,700 19,700 18,400 13,600 10,400 8,230 11,300 12,000 14,000
27 14,100 23,400 22,000 21,100 20,100 18,000 13,000 10,500 8,300 11,500 12,400 14,500
28 13,400 23,500 21,600 20,900 20,600 18,200 12,300 10,700 8,710 11,700 13,500 15,100
29 12,900 13,900 21,200 20,800 21,300 18,000 11,600 10,700 9,130 11,600 13,900 16,100
30 13,000   21,600 21,600 21,600 17,700 11,200 10,200 8,940 11,500 14,300 16,600
31 13,000   21,500   21,800   10,700 9,900   12,000   16,600