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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 6,970 5,970 8,420 11,400 11,200 9,810 10,200 6,300 5,290 5,310 6,370 6,460
2 6,810 5,840 8,650 11,200 10,900 9,920 9,690 6,100 5,330 5,580 6,270 6,540
3 6,610 5,840 8,680 11,000 10,700 9,750 9,590 5,820 5,560 5,900 6,180 6,590
4 6,490 5,830 8,650 10,900 10,400 10,100 9,150 5,710 5,670 6,070 6,180 6,470
5 6,310 5,800 8,630 10,700 10,200 10,400 8,750 5,640 5,760 6,150 6,130 6,300
6 6,250 5,710 8,560 10,700 9,940 10,100 8,440 5,560 5,610 6,390 6,110 6,070
7 6,270 5,810 8,480 10,700 9,710 9,690 8,130 5,710 5,440 6,510 6,070 5,890
8 6,340 6,290 8,670 10,600 9,470 9,410 7,870 5,750 5,420 6,480 5,990 5,770
9 6,400 6,520 9,090 10,700 9,380 9,600 7,560 5,680 5,470 6,300 6,040 5,720
10 6,360 6,710 9,990 10,900 9,440 9,790 7,370 5,590 5,490 6,140 6,200 5,780
11 6,350 6,860 11,100 11,200 9,600 9,810 7,360 5,530 5,470 6,190 6,150 5,720
12 6,430 6,790 11,800 11,300 9,770 10,000 7,380 5,440 5,690 6,120 6,120 5,620
13 6,470 6,780 12,500 11,300 10,100 10,600 7,580 5,200 6,160 6,020 6,010 5,690
14 6,410 6,780 12,700 11,200 10,400 10,700 7,390 5,170 6,410 5,960 5,890 5,920
15 6,220 6,810 12,700 11,300 10,400 10,700 7,150 4,970 6,420 6,040 5,840 6,080
16 6,060 6,890 12,500 11,300 10,600 10,600 6,990 4,750 6,060 6,110 5,760 6,110
17 6,200 7,000 12,600 11,200 10,300 10,300 6,800 4,660 5,850 6,100 5,710 5,890
18 6,330 7,230 12,300 11,500 10,200 10,000 6,650 4,540 5,710 6,110 5,770 5,820
19 6,130 7,340 12,000 11,600 10,300 10,500 6,500 4,670 5,670 5,980 5,850 5,760
20 5,870 7,690 12,000 11,600 10,000 11,000 6,730 5,060 5,640 5,900 5,810 5,700
21 5,780 8,300 12,000 11,500 9,750 10,800 6,860 5,370 5,540 5,730 5,790 5,850
22 5,800 8,290 11,700 11,000 9,660 10,600 7,120 5,740 5,670 5,680 5,800 6,000
23 5,830 8,030 11,500 10,700 9,870 10,500 7,310 5,820 6,010 5,890 5,710 6,140
24 5,980 8,360 11,400 10,400 10,000 10,200 7,910 5,860 5,920 6,210 5,650 6,460
25 6,090 8,850 11,600 10,200 9,940 10,000 7,910 6,010 5,650 6,370 5,640 6,490
26 6,060 8,670 11,500 10,300 9,690 10,200 7,370 6,120 5,560 6,460 5,770 6,440
27 5,910 8,730 11,400 10,500 9,510 10,600 7,230 6,130 5,520 6,630 6,130 6,500
28 5,770 8,690 11,300 10,400 9,520 10,400 7,200 6,050 5,370 6,730 6,340 6,940
29 5,680 7,470 11,400 10,400 9,430 10,400 7,130 5,970 5,300 6,580 6,390 7,230
30 5,680   11,300 10,800 9,480 10,400 6,870 5,720 5,310 6,540 6,420 7,230
31 5,910   11,400   9,670   6,590 5,460   6,520   7,040