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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" NAD83
Drainage area 938  square miles
Contributing drainage area 938.00  square miles
Gage datum 583.17 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 1982-10-01 -> 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 1,180 662 1,090 1,250 1,470 1,090 815 208 129 108 417 817
2 1,080 618 1,070 1,180 1,530 1,030 710 135 130 114 398 837
3 857 608 1,070 1,160 1,530 1,100 666 129 107 133 430 850
4 836 688 1,070 1,220 1,590 1,310 626 99 124 131 449 859
5 972 869 1,020 1,070 1,500 1,360 629 115 158 121 431 753
6 901 978 1,020 1,010 1,250 1,300 539 83 89 93 379 682
7 828 984 1,050 1,040 1,180 1,340 442 86 92 111 328 717
8 759 998 1,060 1,050 1,280 1,140 431 74 120 108 314 718
9 694 1,020 1,050 938 1,330 1,010 519 66 106 182 249 634
10 669 936 1,230 901 1,300 905 514 62 114 189 234 650
11 843 765 1,190 968 1,320 949 539 54 128 196 229 710
12 953 732 1,260 1,120 1,460 1,020 607 54 164 206 257 721
13 1,050 897 1,360 1,090 1,360 1,190 679 102 139 192 309 736
14 959 851 1,370 1,310 1,490 1,190 621 110 383 220 349 673
15 921 805 1,240 1,450 1,360 1,210 643 148 413 202 385 610
16 887 737 1,170 1,320 1,530 1,180 687 140 343 212 433 689
17 831 820 1,090 1,190 1,640 1,030 522 207 313 208 537 673
18 719 866 1,010 1,100 1,590 977 399 183 287 221 579 640
19 703 781 1,080 1,180 1,650 1,010 311 192 237 218 661 560
20 676 840 1,110 1,230 1,480 1,160 266 119 198 239 662 502
21 689 1,100 1,080 1,210 1,340 1,030 229 78 163 258 672 511
22 681 1,180 1,020 1,220 1,200 1,030 259 72 124 223 602 550
23 733 1,290 964 1,120 1,080 1,120 247 68 107 240 570 597
24 814 1,390 916 977 1,010 970 204 68 103 269 534 710
25 817 1,510 886 1,000 1,070 821 276 72 106 341 557 835
26 773 1,480 900 1,040 1,280 866 383 82 103 306 595 813
27 750 1,390 968 1,030 1,290 834 405 145 104 372 616 1,020
28 762 1,280 1,120 1,130 1,340 934 406 172 106 449 723 1,140
29 707 459 1,160 1,170 1,320 832 358 185 101 432 730 1,310
30 650   1,120 1,350 1,210 867 298 142 118 426 761 1,370
31 666   1,260   1,150   258 133   485   1,250