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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 05576000 SOUTH FORK SANGAMON RIVER NEAR ROCHESTER, IL


Sangamon County, Illinois
Hydrologic Unit Code 07130007
Latitude  39°44'32", Longitude  89°34'02.2" NAD83
Drainage area 867  square miles
Gage datum 510.90 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 1948-10-01 -> 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
1 922 818 982 1,060 1,300 960 936 360 138 161 224 438
2 879 868 934 1,050 1,380 971 834 405 174 154 230 480
3 805 886 874 1,060 1,340 911 688 460 225 181 254 526
4 782 890 880 1,090 1,300 887 599 471 247 191 274 561
5 795 899 929 1,070 1,250 893 554 441 230 183 267 549
6 783 845 946 1,050 1,210 887 493 399 206 188 255 542
7 765 809 978 979 1,190 899 417 373 182 206 242 551
8 781 780 1,000 938 1,220 901 371 340 158 190 226 543
9 722 782 1,020 913 1,290 903 394 319 128 191 203 515
10 639 828 1,000 912 1,280 875 426 285 103 199 182 507
11 616 829 966 937 1,290 858 409 226 94 220 164 536
12 582 824 958 1,070 1,270 867 393 186 78 209 157 549
13 577 821 966 1,160 1,280 839 354 173 86 211 163 572
14 636 829 991 1,300 1,250 868 347 159 92 259 186 563
15 635 783 982 1,270 1,210 981 338 150 137 261 202 565
16 634 746 979 1,170 1,170 1,040 343 155 185 275 226 571
17 596 763 981 1,100 1,210 1,070 339 156 240 264 275 565
18 554 762 999 1,030 1,260 1,130 315 149 244 258 320 543
19 576 736 1,050 1,070 1,260 1,110 287 137 244 239 349 506
20 621 748 1,090 1,060 1,210 1,090 308 138 236 200 384 471
21 634 835 1,120 1,070 1,160 1,010 358 129 215 173 413 445
22 687 911 1,110 1,120 1,170 1,010 370 126 184 159 426 434
23 721 1,010 1,090 1,120 1,130 1,060 327 107 197 156 417 430
24 726 1,070 1,080 1,160 1,060 1,020 294 96 190 162 401 459
25 696 1,150 1,080 1,200 969 982 267 84 179 171 316 506
26 683 1,170 1,060 1,190 999 995 244 81 187 176 392 537
27 705 1,130 1,040 1,130 1,020 972 243 84 207 190 387 587
28 720 1,070 1,030 1,120 1,030 936 254 85 195 190 398 690
29 724 452 1,040 1,120 1,020 893 253 86 190 185 403 866
30 748   1,010 1,180 978 897 273 94 179 206 404 960
31 770   1,040   975   323 105   230   971