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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 05435500 PECATONICA RIVER AT FREEPORT, IL


Stephenson County, Illinois
Hydrologic Unit Code 07090003
Latitude  42°18'01", Longitude  89°36'55" NAD83
Drainage area 1,326.88  square miles
Gage datum 743.18 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 1913-10-01 -> 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
1 865 807 1,670 1,650 1,170 1,060 1,160 804 754 851 831 813
2 840 816 1,630 1,580 1,200 1,070 1,210 801 734 844 864 807
3 812 831 1,550 1,590 1,190 1,090 1,250 822 733 831 865 802
4 785 821 1,520 1,590 1,170 1,110 1,250 827 740 810 865 788
5 788 843 1,580 1,570 1,130 1,100 1,210 815 741 824 842 788
6 848 897 1,610 1,550 1,090 1,080 1,170 834 761 854 813 779
7 814 921 1,680 1,490 1,090 1,080 1,100 850 763 882 803 767
8 813 951 1,690 1,430 1,100 1,070 1,050 846 764 889 792 757
9 828 1,000 1,680 1,370 1,110 1,080 1,050 847 782 871 790 741
10 817 1,010 1,660 1,320 1,120 1,080 1,060 833 796 842 800 742
11 777 1,020 1,740 1,300 1,120 1,100 1,060 814 793 837 811 733
12 742 1,040 1,790 1,280 1,120 1,130 1,030 784 809 816 805 725
13 749 1,040 1,890 1,240 1,130 1,200 1,010 762 847 797 791 711
14 765 1,050 2,000 1,200 1,140 1,250 993 740 883 788 762 712
15 777 1,060 2,100 1,190 1,120 1,250 960 734 927 784 757 719
16 774 1,060 2,220 1,190 1,090 1,230 901 734 985 763 765 740
17 772 1,000 2,190 1,210 1,080 1,230 865 737 959 758 786 756
18 768 969 2,080 1,210 1,070 1,220 866 731 929 783 816 741
19 752 1,020 1,990 1,210 1,060 1,200 898 734 913 797 825 725
20 749 1,160 1,960 1,220 1,060 1,180 928 768 887 789 821 716
21 769 1,350 1,880 1,220 1,060 1,180 951 788 918 780 826 708
22 824 1,440 1,780 1,210 1,060 1,190 979 827 917 771 826 696
23 870 1,550 1,740 1,210 1,080 1,200 995 830 888 789 803 688
24 920 1,650 1,750 1,200 1,080 1,190 978 821 862 805 794 703
25 936 1,800 1,800 1,180 1,080 1,190 927 792 866 807 800 724
26 918 1,790 1,780 1,190 1,080 1,190 867 779 889 813 799 732
27 899 1,740 1,790 1,190 1,080 1,170 826 797 923 809 805 764
28 869 1,700 1,830 1,180 1,080 1,150 847 815 910 796 813 823
29 841 1,620 1,800 1,160 1,110 1,140 834 821 874 776 814 834
30 822   1,750 1,170 1,100 1,140 832 807 852 779 818 838
31 811   1,680   1,080   830 774   807   857