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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 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 742.41 feet above NAVD88
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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 -> 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
1 867 814 1,680 1,650 1,170 1,060 1,150 807 754 851 829 809
2 841 824 1,640 1,580 1,200 1,070 1,200 802 734 843 860 803
3 814 839 1,560 1,590 1,190 1,090 1,240 821 733 829 860 799
4 790 828 1,530 1,600 1,180 1,100 1,240 826 741 808 861 784
5 794 848 1,600 1,580 1,130 1,100 1,210 814 742 819 844 784
6 852 899 1,630 1,550 1,100 1,080 1,170 832 761 848 819 776
7 818 922 1,700 1,500 1,100 1,080 1,100 863 762 875 808 765
8 815 951 1,700 1,430 1,100 1,070 1,060 890 763 882 796 754
9 829 1,000 1,680 1,370 1,110 1,080 1,050 915 780 865 793 738
10 817 1,020 1,670 1,320 1,120 1,080 1,060 891 794 837 801 741
11 778 1,020 1,740 1,300 1,120 1,100 1,060 855 793 832 810 733
12 744 1,040 1,790 1,280 1,120 1,130 1,030 812 814 812 805 726
13 750 1,040 1,880 1,240 1,130 1,190 1,010 780 855 795 791 712
14 764 1,050 1,980 1,210 1,140 1,240 990 754 890 788 763 714
15 776 1,060 2,090 1,200 1,120 1,240 959 744 931 785 759 729
16 774 1,070 2,200 1,190 1,090 1,230 902 741 985 765 766 754
17 774 1,010 2,170 1,210 1,090 1,220 866 744 958 759 785 770
18 772 975 2,070 1,220 1,070 1,210 867 736 928 782 814 754
19 759 1,030 1,970 1,210 1,060 1,200 897 738 912 795 823 735
20 757 1,160 1,950 1,220 1,060 1,170 925 771 885 787 818 722
21 776 1,340 1,870 1,220 1,070 1,180 947 791 916 777 822 713
22 828 1,430 1,770 1,220 1,060 1,190 975 829 914 768 822 699
23 871 1,540 1,730 1,220 1,080 1,200 990 832 885 786 801 690
24 919 1,650 1,740 1,210 1,080 1,190 973 823 859 801 792 707
25 935 1,790 1,800 1,190 1,080 1,180 924 793 863 805 797 729
26 918 1,780 1,780 1,200 1,080 1,190 864 779 887 812 796 738
27 900 1,740 1,790 1,200 1,080 1,170 824 797 920 809 802 770
28 873 1,700 1,830 1,180 1,080 1,140 846 814 908 797 809 827
29 846 1,620 1,790 1,170 1,110 1,130 837 822 875 778 809 838
30 827   1,750 1,170 1,110 1,130 836 808 853 780 813 842
31 816   1,680   1,080   834 775   806   860