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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 06485500 BIG SIOUX RIVER AT AKRON, IA


Plymouth County, Iowa
Hydrologic Unit Code 10170203
Latitude  42°50'15.1", Longitude  96°33'41.8" NAD27
Drainage area 7,879  square miles
Contributing drainage area 6,995  square miles
Gage datum 1,119.53 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 1928-10-01 -> 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
1 445 327 1,260 4,850 2,730 2,670 2,610 1,260 799 966 773 615
2 442 325 1,360 4,730 2,700 2,580 2,700 1,300 751 942 784 606
3 427 332 1,500 4,510 2,740 2,480 2,630 1,200 788 927 792 611
4 417 337 1,600 4,400 2,700 2,440 2,450 1,130 839 928 811 595
5 410 335 1,720 4,310 2,610 2,360 2,400 1,070 863 920 802 594
6 403 334 1,790 4,350 2,510 2,280 2,530 1,050 811 918 773 579
7 397 338 1,800 4,520 2,460 2,310 2,370 1,070 769 929 757 566
8 385 350 1,800 4,680 2,460 2,610 2,210 1,030 708 935 748 558
9 372 407 1,790 4,790 2,510 2,500 2,110 1,000 686 955 738 544
10 363 443 1,730 4,620 2,860 2,390 2,020 954 713 976 728 543
11 357 528 1,770 4,240 2,870 2,240 1,970 952 747 1,000 722 534
12 356 600 1,980 3,920 2,720 2,230 2,040 964 788 1,010 713 531
13 349 564 2,230 3,740 2,620 2,280 2,140 997 794 977 708 529
14 341 537 2,530 3,820 2,530 2,420 1,980 970 837 936 722 532
15 335 531 3,060 3,730 2,440 2,680 1,870 912 1,030 898 725 526
16 329 548 3,350 3,440 2,350 2,790 1,740 875 1,170 877 728 521
17 330 563 3,240 3,250 2,260 2,850 1,640 892 1,160 872 729 515
18 330 592 3,130 3,130 2,210 3,710 1,600 873 1,100 856 732 508
19 332 675 3,050 3,040 2,120 3,520 1,610 875 1,060 842 727 505
20 331 724 3,120 2,980 2,060 3,230 1,540 858 1,030 837 744 495
21 328 759 3,230 2,990 2,030 3,200 1,490 868 1,110 834 755 491
22 326 809 3,280 2,990 2,040 4,100 1,470 864 1,250 821 745 480
23 326 837 3,200 2,910 2,070 4,860 1,490 884 1,340 815 731 468
24 330 871 3,230 2,870 2,090 4,170 1,480 866 1,310 823 709 462
25 331 898 3,320 3,050 2,150 3,740 1,460 852 1,270 837 689 458
26 323 943 3,230 3,100 2,230 3,410 1,400 809 1,270 831 677 457
27 319 1,010 3,280 2,910 2,250 3,130 1,370 773 1,340 815 665 449
28 315 1,110 3,430 2,760 2,470 3,070 1,300 807 1,270 797 650 451
29 314 2,060 3,680 2,730 2,560 2,950 1,250 842 1,130 779 644 452
30 315   4,270 2,730 2,610 2,760 1,220 875 1,030 766 631 450
31 322   4,640   2,660   1,190 867   761   448