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USGS Daily Statistics for the Nation

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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 04185318 Tiffin River near Evansport OH


Defiance County, Ohio
Hydrologic Unit Code 04100006
Latitude  41°22'57", Longitude  84°24'58" NAD83
Drainage area 563  square miles
Gage datum 657.75 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 2013-10-01 -> 2026-09-30)

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
1 915 520 1,200 1,370 666 585 850 239 77 155 477 419
2 864 467 1,210 1,400 775 676 758 184 68 144 530 440
3 799 437 1,210 1,500 954 673 597 135 61 135 541 417
4 798 433 1,140 1,690 1,190 585 426 108 53 126 506 366
5 703 468 1,070 1,650 1,260 541 336 91 47 162 498 328
6 578 483 988 1,530 1,210 581 302 80 44 168 486 333
7 467 503 909 1,460 1,140 572 284 73 42 159 434 319
8 363 579 825 1,320 1,020 616 239 98 41 157 371 263
9 305 614 725 1,190 929 559 275 157 41 170 308 225
10 323 634 736 1,050 898 490 411 118 44 155 267 218
11 398 612 808 961 756 516 466 87 86 129 238 246
12 651 578 866 944 635 463 427 74 96 105 197 279
13 845 551 885 846 558 410 444 77 80 88 154 259
14 864 501 906 725 554 521 499 80 81 84 136 233
15 793 447 1,010 724 624 479 498 114 69 131 127 234
16 705 434 1,090 742 659 527 425 146 58 215 123 240
17 646 528 1,070 668 713 543 376 129 51 217 127 243
18 609 608 962 578 796 482 400 119 49 176 172 234
19 582 618 970 547 1,030 422 348 191 45 137 299 236
20 599 660 1,050 596 1,120 387 270 191 41 112 322 216
21 577 823 975 721 1,010 440 234 177 46 107 309 238
22 511 996 839 708 926 436 307 174 51 102 294 357
23 477 1,190 778 624 800 501 291 145 77 112 294 425
24 516 1,290 778 549 687 498 277 103 116 105 334 407
25 610 1,280 785 482 594 406 314 84 117 203 348 376
26 691 1,230 752 483 544 360 332 85 105 329 339 375
27 712 1,160 771 494 518 475 323 78 94 377 394 476
28 670 1,220 859 513 508 837 315 81 104 381 423 529
29 649 417 981 514 500 959 318 73 123 404 452 586
30 627   1,030 565 475 847 304 78 156 426 442 732
31 573   1,240   526   274 88   444   842