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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 05451500 Iowa River at Marshalltown, IA


Marshall County, Iowa
Hydrologic Unit Code 07080208
Latitude  42°03'57", Longitude  92°54'27" NAD27
Drainage area 1,532  square miles
Gage datum 853.10 feet above NGVD29
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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 1902-10-01 -> 2021-09-30)

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
1 459 356 958 2,080 1,410 2,010 1,910 718 594 698 625 474
2 434 385 992 1,930 1,470 2,120 1,760 725 550 691 620 471
3 407 381 1,050 1,860 1,500 2,090 1,640 673 540 708 592 463
4 382 371 1,200 1,820 1,510 2,200 1,560 619 521 718 583 450
5 393 387 1,320 1,770 1,530 2,140 1,430 595 490 688 579 447
6 453 401 1,300 1,730 1,540 1,930 1,340 570 493 714 568 458
7 416 422 1,340 1,660 1,550 1,840 1,260 558 473 659 571 442
8 386 408 1,300 1,550 1,560 1,820 1,240 554 534 652 560 430
9 360 414 1,280 1,540 1,540 2,000 1,420 564 551 669 568 411
10 344 440 1,310 1,510 1,510 2,020 1,500 579 532 672 561 408
11 323 461 1,400 1,490 1,430 1,890 1,340 580 505 699 563 401
12 315 428 1,540 1,510 1,420 1,880 1,270 606 508 728 571 393
13 307 460 1,710 1,580 1,500 2,160 1,180 551 509 692 559 421
14 294 490 1,860 1,560 1,520 2,140 1,150 526 537 666 538 488
15 283 511 1,920 1,580 1,450 2,080 1,110 545 527 652 533 533
16 291 617 1,910 1,600 1,420 2,050 999 620 548 625 527 494
17 302 632 1,910 1,630 1,400 2,080 966 648 570 592 528 458
18 318 718 1,810 1,670 1,420 2,040 1,030 559 525 575 523 431
19 321 845 1,990 1,620 1,530 2,060 1,010 516 569 567 525 411
20 329 1,020 2,080 1,530 1,650 2,020 998 586 664 558 535 395
21 346 1,050 1,990 1,500 1,580 1,980 929 628 719 551 530 389
22 358 986 1,820 1,440 1,550 2,150 873 627 649 585 524 382
23 356 1,010 1,760 1,430 1,620 2,240 833 621 648 629 518 376
24 337 1,060 1,740 1,410 1,630 2,180 817 599 653 621 505 385
25 322 994 1,800 1,410 1,670 2,060 793 576 667 590 487 391
26 320 963 1,790 1,510 1,750 1,920 805 653 730 560 477 402
27 321 936 1,890 1,580 1,940 1,810 826 685 732 538 484 413
28 326 1,010 1,850 1,490 1,950 1,830 859 657 727 523 489 474
29 305 1,080 1,840 1,400 1,940 1,810 798 656 699 518 487 467
30 312   1,830 1,400 2,090 1,870 746 695 720 547 477 450
31 344   2,040   2,070   718 643   595   475