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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 05440700 ROCK RIVER AT BYRON, IL


Ogle County, Illinois
Hydrologic Unit Code 07090005
Latitude  42°07'23", Longitude  89°15'21" NAD27
Drainage area 7,990  square miles
Contributing drainage area 7,990.00  square miles
Gage datum 666.13 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 1999-10-01 -> 2022-09-30)

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 7,150 6,100 8,670 11,400 11,200 9,810 10,200 6,300 5,290 5,310 6,480 6,620
2 6,980 5,960 8,890 11,200 10,900 9,920 9,690 6,100 5,330 5,580 6,380 6,710
3 6,790 5,970 8,910 11,000 10,700 9,750 9,590 5,820 5,560 5,900 6,300 6,760
4 6,670 5,950 8,860 10,900 10,400 10,100 9,150 5,710 5,670 6,070 6,300 6,640
5 6,470 5,920 8,860 10,700 10,200 10,400 8,750 5,640 5,760 6,290 6,240 6,470
6 6,420 5,830 8,760 10,700 9,940 10,100 8,440 5,560 5,610 6,540 6,220 6,210
7 6,440 5,930 8,640 10,700 9,710 9,690 8,130 5,710 5,440 6,670 6,190 6,010
8 6,500 6,410 8,830 10,600 9,470 9,410 7,870 5,750 5,420 6,600 6,110 5,920
9 6,560 6,660 9,250 10,700 9,380 9,600 7,560 5,680 5,470 6,410 6,160 5,870
10 6,490 6,870 10,200 10,900 9,440 9,790 7,370 5,590 5,490 6,270 6,330 5,900
11 6,490 7,030 11,300 11,200 9,600 9,810 7,360 5,530 5,470 6,310 6,270 5,820
12 6,580 6,960 12,100 11,300 9,770 10,000 7,380 5,440 5,690 6,220 6,230 5,700
13 6,610 6,930 12,800 11,300 10,100 10,600 7,580 5,200 6,160 6,100 6,110 5,760
14 6,550 6,940 13,100 11,200 10,400 10,700 7,390 5,170 6,410 6,040 6,000 6,020
15 6,360 6,970 13,100 11,300 10,400 10,700 7,150 4,970 6,420 6,130 5,950 6,210
16 6,190 7,050 12,900 11,300 10,600 10,600 6,990 4,750 6,060 6,180 5,870 6,200
17 6,350 7,170 12,600 11,200 10,300 10,300 6,800 4,660 5,850 6,170 5,820 6,010
18 6,480 7,410 12,300 11,500 10,200 10,000 6,650 4,540 5,710 6,190 5,880 5,930
19 6,270 7,520 12,000 11,600 10,300 10,500 6,500 4,670 5,670 6,060 5,940 5,850
20 6,010 7,890 12,000 11,600 10,000 11,000 6,730 5,060 5,640 5,980 5,900 5,800
21 5,910 8,510 12,000 11,500 9,750 10,800 6,860 5,370 5,540 5,800 5,880 5,970
22 5,930 8,490 11,700 11,000 9,660 10,600 7,120 5,740 5,670 5,760 5,910 6,120
23 5,950 8,210 11,500 10,700 9,870 10,500 7,310 5,820 6,010 6,030 5,840 6,270
24 6,110 8,510 11,400 10,400 10,000 10,200 7,910 5,860 5,920 6,380 5,790 6,590
25 6,230 9,040 11,600 10,200 9,940 10,000 7,910 6,010 5,650 6,510 5,790 6,640
26 6,200 8,870 11,500 10,300 9,690 10,200 7,370 6,120 5,560 6,560 5,920 6,600
27 6,040 8,930 11,400 10,500 9,510 10,600 7,230 6,130 5,520 6,710 6,290 6,640
28 5,890 8,910 11,300 10,400 9,520 10,400 7,200 6,050 5,370 6,810 6,510 7,100
29 5,800 7,470 11,400 10,400 9,430 10,400 7,130 5,970 5,300 6,670 6,560 7,390
30 5,800   11,300 10,800 9,480 10,400 6,870 5,720 5,310 6,650 6,590 7,410
31 6,030   11,400   9,670   6,590 5,460   6,620   7,230