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USGS Daily Statistics for Ohio

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Ohio

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 -> 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
1 609 244 895 560 428 305 338 57 60 115 237 481
2 565 232 1,030 536 412 271 275 57 45 96 265 574
3 549 211 1,020 616 441 276 237 50 31 76 325 656
4 505 212 957 724 508 274 217 42 26 61 313 581
5 439 278 858 805 508 282 182 53 26 54 248 421
6 423 515 761 758 526 277 152 61 34 76 194 352
7 424 750 679 619 513 249 133 58 40 132 157 358
8 384 765 589 555 446 205 142 45 45 176 141 325
9 323 637 605 541 393 188 190 35 92 149 135 256
10 368 462 641 521 449 207 253 41 128 103 119 214
11 467 455 671 524 526 238 288 53 146 70 101 193
12 528 544 723 618 518 253 266 57 149 48 88 234
13 696 536 760 762 458 260 254 47 120 36 87 271
14 796 470 772 720 403 280 261 39 79 30 97 308
15 862 402 834 570 429 323 278 34 51 31 116 309
16 808 327 936 481 408 479 286 33 33 35 150 280
17 638 321 907 470 405 631 250 35 29 46 190 262
18 458 415 679 433 533 621 229 42 31 55 282 243
19 374 603 539 381 582 582 234 48 26 87 373 212
20 367 596 558 416 578 518 223 40 23 159 413 187
21 366 502 611 500 530 468 190 53 26 196 353 209
22 358 481 493 479 452 463 172 75 30 231 280 313
23 334 657 404 365 344 427 218 84 40 244 249 478
24 334 659 408 266 287 410 220 91 49 209 271 578
25 392 610 468 225 301 375 189 85 52 191 307 528
26 466 541 519 350 299 323 134 69 55 175 315 453
27 438 521 479 604 355 346 103 57 59 166 313 431
28 372 613 470 713 478 423 68 42 67 185 320 498
29 318 321 502 573 528 451 54 34 66 192 350 679
30 284   581 457 474 393 60 43 57 210 389 756
31 257   606   389   57 56   226   699