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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 05542000 MAZON RIVER NEAR COAL CITY, IL


Grundy County, Illinois
Hydrologic Unit Code 07120005
Latitude  41°17'10.3", Longitude  88°21'35.5" NAD83
Drainage area 455  square miles
Gage datum 527.21 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 1939-10-01 -> 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
1 509 322 455 681 868 538 396 74 173 148 246 316
2 394 342 471 731 791 566 290 66 261 148 233 346
3 338 309 442 709 596 460 242 55 192 144 230 430
4 424 325 601 699 472 380 231 59 103 207 216 469
5 516 394 750 668 467 344 195 53 71 155 214 324
6 421 455 685 684 457 437 181 48 89 152 195 263
7 329 489 577 621 514 474 164 90 153 213 176 254
8 347 329 615 538 620 502 150 145 177 176 141 339
9 399 369 687 560 567 507 256 94 217 151 125 290
10 311 414 712 546 594 452 252 50 232 159 173 244
11 337 340 959 628 741 370 294 45 184 153 192 252
12 347 379 800 828 894 342 244 70 122 135 175 345
13 428 503 732 668 826 596 337 70 146 125 195 338
14 474 434 733 637 888 720 404 44 302 176 240 280
15 386 349 773 615 1,010 626 400 60 462 153 216 284
16 302 342 794 628 803 590 265 78 331 128 225 277
17 252 463 708 667 660 476 192 54 187 181 192 243
18 257 522 696 668 807 465 303 47 165 219 182 227
19 250 602 866 660 740 507 452 67 186 151 333 189
20 338 598 811 597 539 526 303 120 111 119 313 192
21 299 646 650 569 516 541 241 240 85 112 211 231
22 277 621 557 611 472 566 256 155 91 99 185 352
23 294 739 568 731 469 602 256 205 107 118 216 305
24 342 712 609 638 438 437 175 236 135 131 227 256
25 377 523 600 773 464 440 134 208 150 201 212 317
26 412 437 530 795 537 547 129 162 164 214 222 392
27 352 471 483 738 486 541 166 175 142 225 288 428
28 336 547 547 783 460 414 142 303 155 202 487 569
29 290 231 621 711 472 433 108 241 144 163 430 532
30 293   658 892 491 398 93 164 155 242 299 575
31 326   673   524   102 128   308   556