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USGS Surface-Water 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 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
1 509 310 459 669 848 541 400 74 173 148 246 316
2 394 332 475 698 781 568 293 66 261 148 233 346
3 338 301 446 683 589 461 244 55 192 144 230 430
4 424 319 607 683 467 380 233 59 103 207 216 469
5 516 391 750 657 464 331 197 53 71 155 214 324
6 421 454 682 678 456 422 183 48 89 152 195 263
7 329 490 576 617 512 469 166 90 153 213 176 254
8 347 328 617 528 616 501 151 145 177 176 141 339
9 399 369 678 554 565 507 259 94 217 151 125 290
10 311 414 707 543 593 453 254 50 232 159 173 244
11 337 341 962 628 743 371 297 45 184 153 192 252
12 347 381 803 831 900 343 247 70 122 135 175 345
13 428 506 736 670 831 600 341 70 146 125 195 338
14 474 437 735 639 840 725 408 44 302 176 240 280
15 386 350 769 618 971 631 404 60 462 153 216 284
16 302 344 794 631 792 594 267 78 331 128 225 277
17 252 466 710 671 655 479 194 54 187 181 192 243
18 257 527 699 672 807 469 306 47 165 219 182 227
19 250 607 872 664 741 511 457 67 186 151 333 189
20 338 604 817 598 540 531 307 120 111 119 313 192
21 299 652 655 572 517 546 244 240 85 112 211 231
22 277 627 561 614 473 572 259 155 91 99 185 352
23 294 745 572 737 471 607 256 205 107 118 216 305
24 342 718 614 643 440 440 175 236 135 131 227 256
25 377 527 604 780 467 443 134 208 150 201 212 317
26 345 440 533 802 539 552 129 162 164 214 222 392
27 286 475 486 739 477 545 166 175 142 225 288 428
28 297 552 552 763 456 417 142 303 155 202 487 569
29 258 235 627 651 471 437 108 241 144 163 430 532
30 272   664 829 492 401 93 164 155 242 299 575
31 309   678   526   102 128   308   556