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USGS 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 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 -> 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
1 922 818 982 1,060 1,300 960 936 358 136 160 221 438
2 879 868 934 1,050 1,380 971 834 406 172 152 227 480
3 805 886 874 1,060 1,340 911 688 461 222 179 251 526
4 782 890 880 1,090 1,300 887 599 472 244 189 270 561
5 795 899 929 1,070 1,250 893 554 444 227 181 267 549
6 783 845 946 1,050 1,210 887 493 403 203 185 263 542
7 765 809 978 979 1,190 899 417 374 180 204 253 551
8 781 780 1,000 938 1,220 901 371 338 156 187 241 543
9 722 782 1,020 913 1,290 903 394 317 126 189 225 515
10 639 828 1,000 912 1,280 875 426 282 102 197 208 507
11 616 829 966 937 1,290 858 409 223 93 218 193 536
12 582 824 958 1,070 1,270 867 393 184 77 207 184 549
13 577 821 966 1,160 1,280 839 354 171 85 209 184 572
14 636 829 991 1,300 1,250 868 347 157 91 256 198 563
15 635 783 982 1,270 1,210 981 338 149 136 258 208 565
16 634 746 979 1,170 1,170 1,040 343 153 183 272 229 571
17 596 763 981 1,100 1,210 1,070 339 155 237 261 276 565
18 554 762 999 1,030 1,260 1,130 315 149 241 255 321 543
19 576 736 1,050 1,070 1,260 1,110 287 137 241 236 351 506
20 621 748 1,090 1,060 1,210 1,090 308 137 233 197 384 471
21 634 835 1,120 1,070 1,160 1,010 358 128 212 171 413 445
22 687 911 1,110 1,120 1,170 1,010 370 124 182 157 426 434
23 721 1,010 1,090 1,120 1,130 1,060 327 106 195 154 417 430
24 726 1,070 1,080 1,160 1,060 1,020 294 95 188 160 401 459
25 696 1,150 1,080 1,200 969 982 265 83 177 169 316 506
26 683 1,170 1,060 1,190 999 995 241 80 184 174 392 537
27 705 1,130 1,040 1,130 1,020 972 240 83 204 188 387 587
28 720 1,070 1,030 1,120 1,030 936 250 84 193 188 398 690
29 724 452 1,040 1,120 1,020 893 250 85 188 183 403 866
30 748   1,010 1,180 978 897 271 93 177 203 404 960
31 770   1,040   975   321 104   227   971