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USGS Daily Statistics for the Nation

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 4,500 3,730 814 1,810 1,770 880 862
2 874 658 1,390 1,730 2,150 3,880 4,030 724 1,860 1,730 853 949
3 835 617 1,330 1,680 2,260 3,420 3,910 658 1,570 1,840 832 963
4 793 601 1,340 1,660 2,520 3,110 3,390 602 1,440 1,870 843 914
5 736 641 1,380 1,660 2,860 3,100 2,940 584 1,450 1,720 921 869
6 706 669 1,460 1,630 2,900 3,090 2,840 570 1,380 1,640 943 823
7 700 641 1,450 1,550 2,850 2,940 3,000 594 1,320 1,530 921 783
8 702 615 1,430 1,460 2,670 2,510 2,720 603 1,380 1,470 865 744
9 651 566 1,560 1,380 2,660 2,250 2,320 632 1,330 1,550 820 735
10 617 580 1,900 1,370 2,860 2,510 2,000 815 1,340 1,620 790 701
11 733 616 2,230 1,400 2,820 2,610 1,870 772 1,300 1,750 777 667
12 669 591 2,250 1,430 2,530 2,380 1,800 785 1,120 1,800 766 648
13 626 588 2,560 1,490 2,360 2,170 1,690 740 998 1,760 753 697
14 626 591 2,990 1,600 2,310 2,010 1,530 650 919 1,760 728 1,170
15 611 615 3,020 1,670 2,200 2,030 1,390 595 867 1,700 707 1,610
16 584 643 2,710 1,880 2,060 2,470 1,320 543 967 1,550 689 1,810
17 698 657 2,520 1,930 2,020 2,600 1,290 510 1,100 1,420 680 1,590
18 777 660 2,330 2,080 2,080 2,590 1,210 524 1,100 1,280 660 1,410
19 704 789 2,180 2,150 2,180 2,610 1,140 501 1,070 1,130 654 1,280
20 730 1,110 2,220 2,050 2,430 2,900 1,100 591 1,090 1,030 641 1,180
21 740 1,290 2,170 2,080 3,070 3,050 1,070 847 1,150 970 638 1,090
22 745 1,320 2,070 2,090 3,470 3,450 1,030 850 1,190 1,070 651 991
23 860 1,250 1,970 2,130 3,510 3,710 994 806 1,360 1,090 654 911
24 735 1,300 1,930 2,160 3,430 3,760 953 788 1,540 1,050 665 943
25 673 1,300 1,900 2,130 3,410 4,130 926 709 1,650 1,020 677 942
26 647 1,270 1,850 2,120 3,890 4,220 896 630 1,720 969 692 935
27 627 1,300 1,790 2,050 4,810 3,850 911 594 1,800 964 794 981
28 614 1,550 1,740 1,980 5,200 3,420 921 575 1,890 958 882 1,130
29 595 1,580 1,720 1,940 5,260 3,390 1,290 897 1,890 950 859 1,170
30 630   1,740 1,930 5,100 3,430 1,220 1,220 1,870 919 813 1,090
31 637   1,840   5,000   950 1,400   907   993