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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 05569500 SPOON RIVER AT LONDON MILLS, IL


Fulton County, Illinois
Hydrologic Unit Code 07130005
Latitude  40°42'27.8", Longitude  90°16'47.2" NAD83
Drainage area 1,072  square miles
Contributing drainage area 1,072.00  square miles
Gage datum 508.56 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 1942-10-01 -> 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
1 736 590 1,040 1,270 1,430 1,460 938 383 352 419 438 406
2 780 593 1,010 1,250 1,350 1,590 920 319 299 450 527 487
3 704 599 963 1,230 1,300 1,570 887 314 282 438 562 575
4 678 671 1,210 1,130 1,250 1,310 798 306 205 543 486 556
5 774 790 1,340 1,100 1,180 1,170 843 311 182 435 415 501
6 813 806 1,250 1,250 1,060 1,100 767 325 179 403 368 484
7 723 747 1,160 1,240 1,030 1,070 704 373 246 337 351 492
8 660 682 1,080 1,160 1,280 1,020 808 376 300 300 323 493
9 540 721 1,090 1,150 1,390 1,030 909 338 313 271 317 445
10 506 803 1,250 1,140 1,360 988 875 310 301 236 347 436
11 486 798 1,450 1,320 1,380 1,020 793 339 279 274 371 443
12 508 814 1,450 1,450 1,460 1,090 797 356 203 288 358 424
13 639 828 1,440 1,350 1,500 1,210 606 308 246 294 377 404
14 622 790 1,400 1,280 1,590 1,360 566 308 421 295 408 433
15 598 834 1,410 1,230 1,790 1,480 552 336 473 283 382 519
16 590 848 1,350 1,250 1,930 1,540 540 354 463 261 373 577
17 541 867 1,310 1,300 1,720 1,230 686 353 394 236 365 531
18 537 1,010 1,300 1,410 1,700 1,110 784 355 307 234 379 466
19 535 1,270 1,390 1,550 1,610 1,290 758 294 301 245 398 414
20 588 1,470 1,550 1,570 1,580 1,460 722 291 299 237 379 392
21 630 1,690 1,370 1,480 1,340 1,450 622 293 317 219 396 409
22 750 1,660 1,170 1,420 1,260 1,450 631 295 372 208 409 411
23 892 1,510 1,080 1,390 1,180 1,560 700 264 417 247 393 387
24 945 1,410 1,060 1,520 1,180 1,380 788 277 513 266 367 410
25 967 1,310 1,140 1,680 1,240 1,310 803 222 555 343 355 529
26 863 1,180 1,160 1,590 1,390 1,190 698 255 460 363 368 625
27 743 1,200 1,030 1,540 1,490 1,060 650 257 393 367 370 698
28 665 1,120 1,090 1,400 1,620 914 574 204 414 337 417 747
29 631 879 1,140 1,260 1,670 855 490 220 377 334 417 801
30 638   1,310 1,380 1,730 818 391 276 402 370 403 821
31 625   1,360   1,550   393 369   391   785