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USGS Daily Statistics for Indiana

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NOTE: USGS Indiana historic, recent, and real-time data will continue to be provided in Eastern Standard Time.


NOTE: During winter months, stage and discharge may be affected by ice. Click here for more information.

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 04180988 St. Marys River at Rockford OH


Mercer County, Ohio
Hydrologic Unit Code 04100004
Latitude  40°41'41", Longitude  84°38'48" NAD27
Drainage area 340  square miles
Gage datum 787.39 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 2005-10-01 -> 2020-09-30)

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
1 626 247 944 597 449 352 440 67 63 140 189 603
2 572 247 1,130 532 436 323 357 68 46 115 219 736
3 558 217 1,150 498 494 326 308 58 32 91 308 850
4 488 215 1,060 590 575 317 282 48 27 71 331 752
5 403 300 871 763 570 334 227 63 25 64 280 539
6 419 619 711 809 597 334 166 73 25 91 226 449
7 466 945 657 688 581 292 122 66 32 161 194 459
8 446 979 588 605 484 241 118 48 42 216 175 418
9 383 798 567 540 367 224 186 36 93 181 169 324
10 429 526 621 520 358 248 289 44 136 122 149 263
11 509 452 705 534 376 287 333 59 165 81 125 229
12 501 506 806 604 378 314 300 64 165 55 108 269
13 684 528 886 703 366 322 283 52 133 40 108 304
14 848 498 906 669 381 336 297 41 83 33 122 341
15 1,000 446 935 552 451 379 339 37 49 29 146 346
16 986 372 1,090 492 435 575 362 36 31 29 192 324
17 793 349 1,060 509 451 780 311 37 28 42 246 315
18 563 413 767 491 641 788 250 49 32 56 367 294
19 439 533 550 436 671 753 231 57 27 99 489 247
20 411 518 488 489 575 674 218 47 25 192 537 210
21 393 469 501 617 466 609 189 62 28 239 457 236
22 385 495 413 604 409 606 198 90 33 270 360 384
23 383 731 354 455 328 559 274 101 39 276 315 616
24 398 695 383 321 292 530 282 110 34 230 330 757
25 467 569 447 266 339 484 240 103 30 189 379 690
26 555 489 466 428 347 418 160 79 35 158 386 575
27 504 460 399 767 397 448 112 62 54 132 370 526
28 403 556 426 912 535 555 73 45 74 132 367 584
29 326 290 472 708 604 590 59 37 76 140 402 764
30 275   540 515 536 512 68 48 67 161 461 822
31 244   611   433   65 59   180   737