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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 05451770 Iowa River at County Highway E49 near Tama, IA


Tama County, Iowa
Hydrologic Unit Code 07080208
Latitude  41°57'51.32", Longitude  92°38'11.58" NAD83
Drainage area 1,882  square miles
Gage datum 810.47 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 2010-10-01 -> 2025-09-30)

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
1 939 664 1,530 1,800 1,990 4,310 3,820 1,680 1,810 1,770 880 862
2 874 658 1,390 1,730 2,150 3,720 4,060 1,480 1,860 1,730 853 949
3 835 617 1,330 1,680 2,260 3,290 3,930 1,240 1,570 1,840 832 963
4 793 601 1,340 1,660 2,520 3,000 3,440 1,020 1,440 1,870 843 914
5 736 641 1,380 1,660 2,860 2,990 3,010 926 1,450 1,720 921 869
6 706 669 1,460 1,630 2,900 2,980 2,920 875 1,380 1,640 943 823
7 700 641 1,450 1,550 2,850 2,850 3,070 866 1,320 1,530 921 783
8 702 615 1,430 1,460 2,670 2,470 2,800 841 1,370 1,470 865 744
9 651 566 1,560 1,380 2,660 2,220 2,390 834 1,330 1,550 820 735
10 617 580 1,900 1,370 2,860 2,470 2,070 1,040 1,340 1,620 790 701
11 733 616 2,230 1,400 2,820 2,550 1,980 1,140 1,290 1,750 777 667
12 669 591 2,250 1,430 2,530 2,340 2,150 1,090 1,120 1,800 766 648
13 626 588 2,560 1,490 2,360 2,160 2,060 954 996 1,760 753 697
14 626 591 2,990 1,600 2,310 2,020 1,800 826 917 1,760 728 1,170
15 611 615 3,020 1,670 2,200 2,050 1,630 748 864 1,700 707 1,610
16 584 643 2,710 1,880 2,060 2,460 1,540 689 964 1,550 689 1,810
17 698 657 2,520 1,930 2,020 2,590 1,490 664 1,100 1,420 680 1,590
18 777 660 2,330 2,080 2,080 2,610 1,370 665 1,100 1,280 660 1,410
19 704 789 2,180 2,150 2,180 2,620 1,270 661 1,060 1,130 654 1,280
20 730 1,110 2,220 2,050 2,430 2,930 1,330 740 1,080 1,030 641 1,180
21 740 1,290 2,170 2,080 3,070 3,210 1,470 971 1,150 970 638 1,090
22 745 1,320 2,070 2,090 3,470 3,580 1,480 967 1,190 1,070 651 991
23 860 1,250 1,970 2,130 3,510 3,770 1,420 922 1,360 1,090 654 911
24 735 1,300 1,930 2,160 3,430 3,790 1,360 902 1,540 1,050 665 943
25 673 1,300 1,900 2,130 3,410 4,120 1,370 818 1,650 1,020 677 942
26 647 1,270 1,850 2,120 3,890 4,220 1,380 729 1,720 969 692 935
27 627 1,300 1,790 2,050 4,810 4,040 1,430 594 1,800 964 794 981
28 614 1,550 1,740 1,980 5,200 3,710 1,420 575 1,890 958 882 1,130
29 595 1,580 1,720 1,940 5,050 3,670 1,710 897 1,890 950 859 1,170
30 630   1,740 1,930 4,880 3,630 1,750 1,220 1,870 919 813 1,090
31 637   1,840   4,780   1,600 1,400   907   993