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  • January 22, 2018 - USGS Water Data availability during lapse in Federal funding

    Due to a lapse in Federal funding, the U.S. Geological Survey must suspend those parts of its data collection and distribution processes requiring human intervention. However, automated reporting and serving of telemetered data will continue.

    Users may note some degradation in the quality and completeness of real-time streamflow, groundwater and water-quality data from some reporting stations due to the suspension of field calibrations and adjustments, especially as high flows occur, aquatic vegetation becomes dominant, or ice forms in high altitude streams. The USGS will continue to monitor some performance aspects of its network using a skeleton workforce.

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USGS Daily Statistics for Iowa

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Boating safety tips are available from the U.S. Coast Guard.

NOTE: Station Numbers for Iowa precipitation gages have changed (see list).


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 97 - 100 years of record in, ft3/s   (Calculation Period 1902-10-01 -> 2018-09-30)

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
1 422 346 953 2,080 1,410 1,960 1,870 731 575 648 599 455
2 401 377 990 1,930 1,470 2,080 1,730 740 520 600 596 443
3 377 370 1,050 1,850 1,500 2,070 1,600 686 490 585 569 431
4 358 345 1,190 1,820 1,500 2,210 1,520 631 454 616 556 421
5 374 365 1,300 1,770 1,510 2,140 1,390 606 424 600 539 419
6 439 389 1,280 1,740 1,520 1,910 1,310 579 421 619 527 433
7 401 415 1,330 1,660 1,530 1,830 1,230 559 397 569 532 420
8 371 402 1,290 1,560 1,540 1,820 1,220 552 461 559 526 409
9 348 410 1,280 1,540 1,500 2,010 1,410 565 488 566 538 392
10 335 439 1,310 1,520 1,480 2,010 1,510 582 478 553 535 392
11 315 462 1,410 1,490 1,410 1,890 1,350 581 461 561 538 387
12 307 429 1,550 1,510 1,410 1,890 1,270 611 473 592 551 381
13 300 463 1,720 1,570 1,500 2,190 1,190 555 482 569 542 413
14 287 495 1,810 1,560 1,520 2,170 1,160 530 518 561 521 484
15 276 517 1,810 1,560 1,440 2,100 1,110 550 511 562 517 530
16 284 628 1,820 1,580 1,420 2,040 1,000 628 535 545 511 492
17 296 643 1,860 1,610 1,380 2,080 971 650 560 521 513 454
18 314 733 1,760 1,650 1,380 2,050 1,040 562 515 513 510 428
19 319 863 1,940 1,600 1,490 2,050 1,020 520 554 513 512 407
20 328 1,030 2,020 1,510 1,620 1,990 1,010 593 627 509 523 391
21 345 1,060 1,920 1,480 1,550 1,940 937 615 667 500 518 385
22 355 1,000 1,750 1,420 1,510 2,080 881 604 587 511 510 378
23 348 1,020 1,700 1,420 1,580 2,150 841 604 573 562 503 373
24 330 1,070 1,680 1,400 1,570 2,100 826 587 572 561 488 382
25 314 995 1,740 1,400 1,590 2,000 803 567 589 535 468 388
26 311 964 1,740 1,510 1,660 1,860 816 653 648 508 458 400
27 313 938 1,860 1,580 1,850 1,760 840 688 652 489 467 395
28 319 1,010 1,820 1,490 1,870 1,790 876 657 659 478 473 424
29 298 1,080 1,810 1,390 1,840 1,770 813 645 641 478 472 418
30 304   1,810 1,400 1,990 1,850 759 676 670 512 463 402
31 335   2,030   2,000   731 624   565   434