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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 05578000 SANGAMON RIVER AT PETERSBURG, IL


Menard County, Illinois
Hydrologic Unit Code 07130008
Latitude  40°00'48", Longitude  89°50'18" NAD83
Drainage area 3,063  square miles
Gage datum 473.67 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 1947-10-01 -> 2025-09-30)

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 4,210 2,280 3,800 4,430 5,400 3,940 4,710 1,160 666 426 1,300 1,290
2 4,330 2,280 3,550 4,470 5,990 3,950 4,280 978 872 371 1,300 1,540
3 4,250 2,270 3,340 4,630 6,500 3,960 3,780 966 1,020 468 1,190 1,640
4 4,020 2,230 3,260 4,670 6,610 3,790 3,350 909 1,040 671 1,060 1,540
5 3,660 2,120 3,200 4,650 6,470 3,550 2,970 851 1,090 746 1,000 1,430
6 3,340 2,070 3,070 4,580 6,240 3,300 2,710 818 1,080 789 1,060 1,300
7 2,970 1,970 2,910 4,390 5,950 3,020 2,400 715 946 810 997 1,190
8 2,550 1,830 2,860 4,070 5,740 2,830 2,260 656 982 810 895 1,160
9 2,220 1,830 2,930 3,830 5,660 2,840 2,440 651 887 724 837 1,060
10 1,940 1,880 3,140 3,570 5,270 2,660 2,510 868 816 629 853 906
11 1,940 1,920 3,210 3,410 4,890 2,440 2,720 825 829 577 844 817
12 2,070 1,980 3,160 3,320 4,780 2,560 2,720 704 808 547 778 801
13 2,260 2,050 3,130 3,020 4,530 2,690 2,490 800 747 531 720 780
14 2,430 2,080 3,090 2,880 4,210 2,760 2,230 757 718 558 670 811
15 2,480 1,940 3,100 2,910 4,130 2,880 2,160 705 673 657 622 1,040
16 2,480 1,930 3,100 2,950 3,980 3,180 2,110 738 629 707 586 1,240
17 2,380 2,140 2,960 2,960 4,250 3,440 2,060 757 628 720 552 1,270
18 2,260 2,470 2,900 2,950 4,800 3,730 1,950 809 581 709 526 1,150
19 2,210 2,630 3,040 3,070 4,970 4,110 1,780 821 535 674 557 1,090
20 2,310 2,890 3,150 3,360 5,180 4,230 1,680 814 565 640 597 999
21 2,380 3,390 3,060 3,650 5,110 4,190 1,730 756 513 598 577 943
22 2,330 3,670 3,040 3,750 5,170 4,260 1,700 710 508 536 566 888
23 2,330 3,860 2,980 3,790 5,270 4,320 1,520 691 515 483 561 843
24 2,490 4,020 2,960 3,750 4,980 4,560 1,290 564 492 479 570 944
25 2,650 4,050 3,120 3,890 4,530 4,770 1,200 510 458 708 651 1,060
26 2,780 4,050 3,340 4,240 4,370 5,010 1,320 448 422 803 801 1,120
27 2,710 4,010 3,410 4,230 4,420 5,530 1,420 426 388 880 920 1,340
28 2,570 4,010 3,610 4,180 4,280 5,590 1,370 585 359 928 967 1,700
29 2,430 2,580 3,640 4,290 4,010 5,410 1,300 810 450 954 999 2,250
30 2,310   3,760 4,680 4,010 5,100 1,210 764 533 973 1,050 2,800
31 2,250   4,230   4,000   1,180 672   1,140   3,910