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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 -> 2023-09-30)

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
1 867 808 1,680 1,650 1,170 1,060 1,150 807 756 850 829 811
2 841 819 1,640 1,580 1,200 1,070 1,200 799 735 843 861 805
3 814 834 1,560 1,590 1,190 1,090 1,240 820 734 830 861 800
4 791 823 1,530 1,600 1,180 1,100 1,240 825 742 809 862 785
5 795 844 1,600 1,580 1,130 1,100 1,210 814 744 821 845 785
6 854 896 1,630 1,550 1,100 1,080 1,170 832 763 850 820 777
7 820 920 1,700 1,500 1,100 1,080 1,100 863 764 878 809 765
8 817 950 1,700 1,430 1,100 1,070 1,060 891 765 885 797 755
9 830 1,000 1,680 1,370 1,110 1,080 1,050 916 782 867 794 739
10 818 1,010 1,670 1,320 1,120 1,080 1,060 892 796 839 802 741
11 778 1,020 1,740 1,300 1,120 1,100 1,060 857 795 834 811 733
12 745 1,040 1,790 1,280 1,120 1,130 1,030 813 816 814 806 726
13 751 1,040 1,880 1,240 1,130 1,190 1,010 781 857 796 792 712
14 766 1,050 1,980 1,210 1,140 1,240 990 754 892 788 764 715
15 778 1,060 2,090 1,200 1,120 1,240 959 744 934 783 760 731
16 775 1,070 2,200 1,190 1,090 1,230 902 741 989 762 767 755
17 775 1,010 2,170 1,210 1,090 1,220 866 742 961 757 786 772
18 774 975 2,070 1,220 1,070 1,210 867 735 931 781 816 755
19 760 1,030 1,970 1,210 1,060 1,200 897 738 915 794 824 736
20 758 1,160 1,950 1,220 1,060 1,170 925 771 888 787 820 723
21 777 1,340 1,870 1,220 1,070 1,180 947 792 919 778 824 714
22 829 1,430 1,770 1,220 1,060 1,190 975 831 917 769 824 700
23 873 1,540 1,730 1,220 1,080 1,200 990 834 888 787 802 690
24 922 1,650 1,740 1,210 1,080 1,190 973 824 862 802 793 708
25 937 1,790 1,800 1,190 1,080 1,180 924 795 865 806 798 730
26 919 1,780 1,780 1,200 1,080 1,190 864 781 889 813 797 738
27 899 1,740 1,790 1,200 1,080 1,170 824 798 922 809 804 769
28 870 1,700 1,830 1,180 1,080 1,140 846 816 909 796 811 827
29 841 1,620 1,790 1,170 1,110 1,130 837 824 873 776 812 837
30 822   1,750 1,170 1,110 1,130 836 810 851 779 816 841
31 810   1,680   1,080   834 777   806   860