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USGS Surface-Water 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 05555300 VERMILION RIVER NEAR LEONORE, IL


Lasalle County, Illinois
Hydrologic Unit Code 07130002
Latitude  41°12'30", Longitude  88°55'50" NAD83
Drainage area 1,251  square miles
Gage datum 521.14 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 1971-10-01 -> 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 1,590 842 1,460 2,000 2,320 1,810 1,170 360 329 324 779 932
2 1,280 847 1,450 1,920 2,400 1,850 987 271 312 345 766 1,090
3 1,020 988 1,460 1,820 2,020 1,580 902 216 442 422 766 1,290
4 1,090 1,120 1,620 1,690 1,670 1,380 804 193 331 652 689 1,380
5 1,280 1,200 2,140 1,560 1,410 1,340 807 195 228 638 622 1,180
6 1,200 1,180 2,070 1,620 1,330 1,520 755 280 215 432 573 991
7 1,030 1,170 1,970 1,580 1,630 1,340 791 318 311 394 485 962
8 1,020 1,090 1,950 1,490 1,670 1,440 745 311 412 359 418 963
9 1,170 1,080 2,080 1,540 1,770 1,350 669 285 456 360 373 903
10 1,090 1,050 2,310 1,590 1,910 1,290 733 256 515 307 411 800
11 1,110 886 2,580 1,670 1,910 1,280 762 249 498 310 458 760
12 1,170 988 2,270 2,090 1,980 1,250 882 255 395 308 484 1,060
13 1,290 1,040 2,050 2,230 2,060 1,320 1,100 234 375 330 517 1,060
14 1,290 1,090 2,120 2,130 2,220 1,440 1,010 215 713 368 580 1,060
15 1,210 984 2,170 1,930 2,400 1,370 830 360 1,030 376 573 1,060
16 1,040 881 2,000 1,890 2,120 1,310 727 444 856 344 625 1,050
17 860 1,150 1,960 1,850 1,740 1,220 621 420 572 419 620 996
18 744 1,440 2,170 2,170 1,910 1,220 623 274 575 510 646 917
19 727 1,440 2,340 2,040 1,940 1,340 887 276 412 493 849 786
20 933 1,580 2,150 1,740 1,660 1,430 892 478 343 452 883 700
21 1,030 1,840 1,880 1,640 1,420 1,440 769 537 279 375 760 731
22 974 2,060 1,660 1,690 1,340 1,680 720 448 236 351 623 823
23 919 2,130 1,770 1,760 1,370 1,680 627 434 212 396 591 878
24 1,010 2,120 1,850 1,640 1,360 1,390 523 466 203 503 583 905
25 1,080 2,080 1,710 1,460 1,370 1,240 516 360 213 645 588 1,120
26 965 1,700 1,540 1,700 1,520 1,150 512 351 231 671 646 1,160
27 897 1,650 1,410 1,640 1,870 1,160 460 287 248 693 839 1,210
28 861 1,560 1,420 1,620 1,960 1,250 412 349 332 586 1,250 1,270
29 746 636 1,600 1,560 1,930 1,240 398 362 310 506 1,230 1,440
30 706   2,000 1,990 1,790 1,240 403 273 289 663 1,010 1,710
31 804   2,030   1,860   427 254   853   1,650