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USGS Surface-Water 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 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 1,180 611 1,110 1,280 1,450 1,090 833 208 129 108 417 817
2 1,080 575 1,090 1,170 1,520 1,040 727 135 130 114 398 837
3 857 576 1,090 1,130 1,510 1,120 682 129 107 133 430 850
4 836 663 1,090 1,210 1,570 1,330 641 99 124 131 449 859
5 972 859 1,040 1,060 1,490 1,370 644 115 158 121 431 753
6 901 978 1,040 998 1,240 1,300 552 83 89 93 379 682
7 828 987 1,070 1,040 1,190 1,340 453 86 92 111 328 717
8 759 1,010 1,070 1,050 1,290 1,130 442 74 120 108 314 718
9 694 1,030 1,060 943 1,350 1,010 525 66 106 182 249 634
10 669 944 1,230 904 1,310 915 495 62 114 189 234 650
11 843 769 1,180 971 1,340 967 531 54 128 196 229 710
12 953 736 1,250 1,130 1,480 1,040 605 54 164 206 257 721
13 1,050 907 1,360 1,090 1,380 1,210 689 102 139 192 309 736
14 959 859 1,370 1,320 1,510 1,210 630 110 383 220 349 673
15 921 817 1,240 1,470 1,380 1,230 651 148 413 202 385 610
16 887 748 1,180 1,340 1,560 1,200 648 140 343 212 433 689
17 831 833 1,110 1,220 1,660 1,030 496 207 313 208 537 673
18 719 880 1,030 1,120 1,620 990 395 183 287 221 579 640
19 703 791 1,100 1,200 1,670 1,030 311 192 237 218 661 560
20 676 852 1,120 1,250 1,500 1,180 268 119 198 239 662 502
21 689 1,120 1,100 1,230 1,360 1,050 230 78 163 258 672 511
22 681 1,200 1,030 1,240 1,210 1,050 259 72 124 223 602 550
23 733 1,310 978 1,130 1,090 1,140 247 68 107 240 570 597
24 814 1,410 930 984 1,030 989 204 68 103 269 534 710
25 817 1,540 899 1,010 1,050 837 276 72 106 341 557 835
26 773 1,510 914 1,040 1,270 883 383 82 103 306 595 813
27 750 1,410 984 1,030 1,280 850 405 145 104 372 616 1,020
28 762 1,300 1,130 1,110 1,330 954 406 172 106 449 723 1,140
29 595 473 1,180 1,150 1,320 851 358 185 101 432 730 1,310
30 551   1,140 1,320 1,210 886 298 142 118 426 761 1,370
31 588   1,280   1,150   258 133   485   1,250