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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 03612000 CACHE RIVER AT FORMAN, IL


Johnson County, Illinois
Hydrologic Unit Code 05140206
Latitude  37°20'06", Longitude  88°55'31" NAD83
Drainage area 244  square miles
Gage datum 307.74 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 1922-10-01 -> 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
1 541 491 610 743 661 227 237 68 70 54 130 323
2 515 541 545 696 713 265 193 77 70 56 149 288
3 519 549 559 671 713 295 172 69 82 51 124 288
4 513 495 604 713 665 244 182 67 77 45 131 299
5 528 457 620 694 590 208 168 70 66 41 140 314
6 498 461 601 695 547 182 137 75 61 51 141 326
7 438 449 626 627 531 181 146 72 46 39 135 311
8 398 433 610 572 509 157 148 59 39 42 138 287
9 418 408 606 560 472 170 140 49 39 58 135 272
10 409 426 624 535 451 164 148 57 34 55 150 275
11 430 418 647 534 453 188 164 63 31 46 141 259
12 410 418 721 565 438 197 149 62 50 47 127 279
13 451 452 692 557 412 200 120 61 44 61 133 279
14 487 480 664 631 451 211 84 65 48 74 130 317
15 540 514 605 638 494 210 68 78 50 68 148 384
16 532 558 555 646 491 194 89 74 37 60 179 356
17 458 560 545 601 480 193 79 82 29 83 190 362
18 445 548 595 560 494 213 82 104 28 94 213 380
19 460 511 800 539 473 217 104 103 27 80 242 373
20 498 490 915 514 403 208 108 89 30 62 228 337
21 536 489 811 511 355 217 97 74 38 59 210 341
22 659 547 715 514 325 274 94 60 44 51 217 376
23 696 555 659 552 318 273 94 73 63 51 267 404
24 684 573 588 565 346 270 74 83 76 58 257 432
25 686 666 545 593 327 232 55 81 87 50 238 432
26 672 633 562 570 360 215 50 71 93 47 253 435
27 587 629 550 525 399 215 51 61 91 58 288 417
28 536 647 581 492 383 204 60 54 78 71 325 444
29 432 361 618 497 338 218 51 60 65 88 313 460
30 435   653 529 283 234 39 68 59 95 327 455
31 480   714   258   51 58   96   513