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USGS Daily Statistics for Iowa

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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 05462000 Shell Rock River at Shell Rock, IA


Butler County, Iowa
Hydrologic Unit Code 07080202
Latitude  42°42'42.93", Longitude  92°34'58.68" NAD83
Drainage area 1,746  square miles
Gage datum 885.36 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 1953-10-01 -> 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
1 570 358 1,060 2,700 1,950 2,170 1,990 936 1,070 1,050 855 636
2 547 364 1,200 2,620 1,930 1,900 1,790 899 1,080 1,010 842 634
3 524 353 1,130 2,350 1,930 1,780 1,630 868 957 1,010 852 628
4 501 362 1,140 2,280 1,920 1,730 1,520 851 848 1,010 817 614
5 490 367 1,110 2,330 1,970 1,730 1,430 824 867 996 790 601
6 475 362 1,090 2,350 2,020 1,740 1,410 825 991 1,010 765 597
7 460 369 1,240 2,270 2,020 1,670 1,500 828 892 987 766 588
8 446 395 1,280 2,110 1,940 1,730 1,460 842 851 985 765 581
9 435 456 1,300 2,060 1,900 2,480 1,550 884 872 1,030 735 572
10 417 473 1,370 1,920 1,940 2,800 1,620 930 847 1,070 722 556
11 395 421 1,460 1,860 2,030 2,300 1,510 953 821 1,060 746 536
12 392 429 1,580 1,900 1,960 2,010 1,480 943 762 1,030 750 544
13 386 413 1,640 2,010 1,950 2,050 1,380 840 705 1,020 749 571
14 380 433 1,730 2,020 1,980 2,140 1,380 827 718 950 736 603
15 363 466 1,950 2,170 1,960 1,980 1,400 803 702 898 730 631
16 357 524 2,080 2,160 1,830 1,990 1,350 767 752 867 715 634
17 370 528 2,070 2,100 1,780 1,930 1,340 753 818 829 713 607
18 398 576 2,050 2,000 1,900 2,010 1,390 798 831 808 711 584
19 398 641 2,060 1,930 1,980 2,100 1,420 815 837 793 717 568
20 409 712 2,110 1,980 1,980 2,130 1,440 876 1,080 787 731 551
21 423 796 2,140 2,110 1,870 2,180 1,410 883 1,290 806 740 536
22 443 873 2,000 2,090 2,030 2,330 1,260 900 1,420 826 761 523
23 444 857 1,940 1,980 2,230 2,380 1,190 1,040 1,710 869 754 510
24 428 833 1,960 1,900 2,170 2,360 1,150 1,240 1,460 914 728 495
25 407 750 2,020 1,900 2,050 2,250 1,080 1,160 1,220 887 698 493
26 396 694 2,160 1,920 1,980 2,340 1,040 1,160 1,160 844 691 500
27 376 719 2,340 1,860 2,010 2,420 1,050 1,070 1,120 854 678 518
28 371 849 2,520 1,880 2,080 2,270 1,120 1,000 1,060 838 675 601
29 369 1,150 2,460 2,010 2,140 2,040 1,090 1,100 1,070 808 664 630
30 364   2,460 1,990 2,140 2,090 1,030 1,130 1,100 828 644 610
31 361   2,520   2,230   963 1,070   860   604