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USGS 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 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 -> 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
1 910 537 1,230 1,370 704 621 843 254 81 165 558 454
2 868 463 1,270 1,390 823 722 729 190 72 153 622 477
3 813 423 1,280 1,340 1,010 720 588 135 64 144 634 452
4 829 425 1,220 1,440 1,270 625 435 108 55 134 594 397
5 742 472 1,130 1,460 1,310 568 349 93 50 174 584 355
6 612 493 1,010 1,340 1,210 536 317 82 46 180 570 360
7 489 521 909 1,300 1,060 516 300 75 44 171 507 346
8 377 610 827 1,200 895 576 251 104 42 169 432 284
9 316 651 727 1,110 796 522 292 168 42 182 358 243
10 337 676 751 999 771 456 442 126 46 167 309 235
11 420 655 839 929 645 506 502 92 92 139 275 265
12 700 618 906 938 547 469 460 78 103 112 225 300
13 910 589 932 852 494 422 479 81 85 94 174 279
14 931 536 960 730 510 538 539 85 86 89 153 250
15 855 477 1,070 737 592 494 539 122 74 141 142 251
16 760 464 1,130 764 650 554 459 157 62 231 137 257
17 697 565 1,060 691 727 574 406 139 54 233 142 257
18 656 652 941 598 832 509 432 127 51 189 196 245
19 625 664 963 565 1,100 436 372 206 47 147 323 248
20 643 710 1,060 616 1,200 385 288 206 43 120 348 227
21 619 889 994 751 1,070 438 249 190 48 114 333 251
22 549 1,080 868 741 912 443 329 188 54 116 316 382
23 513 1,290 813 653 778 522 312 155 82 127 316 457
24 556 1,400 819 574 676 524 299 110 123 120 360 438
25 659 1,360 830 502 601 427 340 89 123 235 374 405
26 747 1,260 795 498 560 378 359 90 109 384 366 403
27 769 1,160 818 491 538 500 349 83 99 440 426 514
28 723 1,230 910 516 531 895 339 87 110 445 458 572
29 701 417 1,000 529 524 1,030 340 78 131 473 490 628
30 677   1,050 590 499 892 324 83 167 499 478 759
31 612   1,230   556   290 94   520   852