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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 05573540 SANGAMON RIVER AT ROUTE 48 AT DECATUR, IL


Macon County, Illinois
Hydrologic Unit Code 07130006
Latitude  39°49'52", Longitude  88°58'35" NAD27
Drainage area 938  square miles
Contributing drainage area 938.00  square miles
Gage datum 583.43 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 1982-10-01 -> 2020-09-30)

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 1,260 637 1,090 1,210 1,500 1,150 701 223 140 119 370 874
2 1,150 596 1,060 1,090 1,580 1,100 620 145 142 125 368 898
3 902 601 1,050 1,060 1,570 1,190 605 141 117 145 417 916
4 866 700 1,030 1,140 1,620 1,420 589 103 121 137 446 929
5 1,010 913 983 996 1,540 1,470 630 123 150 126 437 811
6 935 1,040 1,000 968 1,270 1,380 549 89 92 96 389 732
7 869 1,050 1,030 1,030 1,220 1,420 465 94 100 116 339 774
8 801 1,070 1,020 1,050 1,290 1,180 449 81 132 114 329 783
9 739 1,100 1,010 943 1,340 1,030 511 69 117 196 266 692
10 706 1,010 1,210 909 1,280 938 497 62 125 200 250 712
11 892 812 1,180 998 1,320 1,020 556 55 141 199 240 776
12 1,000 760 1,280 1,180 1,510 1,100 635 58 181 212 269 782
13 1,100 931 1,410 1,130 1,400 1,290 730 104 154 200 325 787
14 997 874 1,440 1,370 1,550 1,300 670 106 424 223 369 722
15 960 833 1,300 1,520 1,410 1,330 694 136 457 194 408 649
16 930 762 1,220 1,390 1,620 1,300 672 90 380 205 463 721
17 882 819 1,150 1,260 1,740 1,120 505 82 346 200 580 699
18 767 864 1,030 1,160 1,680 1,070 400 100 317 214 627 667
19 756 786 1,080 1,250 1,650 1,120 310 148 262 216 718 585
20 720 852 1,110 1,310 1,440 1,280 261 103 219 246 720 532
21 727 1,120 1,080 1,280 1,290 1,140 211 76 179 273 732 550
22 713 1,190 1,010 1,290 1,130 1,140 224 73 135 234 655 589
23 769 1,300 953 1,180 1,030 1,210 212 73 117 253 620 636
24 852 1,400 900 1,020 998 1,050 192 75 113 270 581 760
25 835 1,540 862 1,030 1,050 870 287 79 117 292 606 898
26 745 1,520 862 1,070 1,310 851 406 85 114 272 649 867
27 690 1,390 931 1,060 1,330 793 435 144 115 337 671 1,100
28 690 1,250 1,090 1,160 1,400 782 438 182 117 312 790 1,230
29 633 473 1,150 1,190 1,370 701 388 198 111 278 796 1,420
30 583   1,120 1,360 1,260 746 321 155 130 304 820 1,470
31 618   1,200   1,210   277 144   419   1,340