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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
1 447 328 1,270 4,890 2,720 2,650 2,490 1,250 794 966 778 618
2 443 325 1,370 4,770 2,690 2,550 2,600 1,290 746 942 789 609
3 428 332 1,510 4,550 2,720 2,440 2,530 1,190 784 927 797 615
4 418 337 1,610 4,440 2,680 2,400 2,360 1,120 836 936 816 599
5 411 334 1,740 4,350 2,590 2,320 2,330 1,060 860 928 807 598
6 404 333 1,800 4,390 2,490 2,250 2,470 1,040 808 925 777 582
7 398 337 1,820 4,560 2,440 2,280 2,310 1,050 766 936 762 569
8 385 348 1,810 4,730 2,430 2,590 2,160 1,020 705 942 753 561
9 372 404 1,800 4,830 2,480 2,480 2,060 990 683 962 742 547
10 363 440 1,740 4,660 2,830 2,370 1,980 943 711 984 732 546
11 358 525 1,780 4,270 2,840 2,230 1,930 942 745 1,010 727 537
12 357 598 1,990 3,950 2,690 2,210 2,010 955 787 1,020 717 535
13 350 563 2,250 3,770 2,600 2,260 2,110 990 794 984 713 532
14 342 535 2,550 3,850 2,510 2,410 1,950 962 838 942 726 535
15 336 530 3,090 3,760 2,420 2,670 1,840 904 1,030 903 730 528
16 330 548 3,380 3,460 2,340 2,790 1,710 866 1,170 882 732 523
17 331 564 3,270 3,260 2,250 2,850 1,610 884 1,170 877 734 517
18 331 594 3,150 3,140 2,200 3,710 1,580 865 1,110 862 736 511
19 333 677 3,080 3,040 2,110 3,480 1,590 867 1,060 847 731 508
20 332 724 3,150 2,990 2,050 3,180 1,520 851 1,040 843 748 498
21 329 760 3,260 3,000 2,020 3,120 1,470 862 1,120 840 760 493
22 327 810 3,310 3,000 2,030 3,290 1,450 857 1,250 826 750 482
23 327 838 3,230 2,920 2,050 3,590 1,470 878 1,350 820 735 470
24 331 873 3,260 2,880 2,060 3,390 1,460 860 1,320 828 713 464
25 331 901 3,340 3,060 2,120 3,200 1,440 847 1,280 842 693 459
26 324 947 3,260 3,110 2,190 3,030 1,390 804 1,280 836 681 458
27 319 1,020 3,300 2,930 2,210 2,840 1,360 767 1,340 820 670 449
28 316 1,120 3,460 2,770 2,440 2,850 1,290 802 1,270 802 654 451
29 314 2,130 3,720 2,740 2,540 2,790 1,240 836 1,140 783 647 453
30 315   4,310 2,730 2,600 2,620 1,200 870 1,030 771 635 451
31 322   4,680   2,650   1,180 863   765   449