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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 05453100 Iowa River at Marengo, IA


Iowa County, Iowa
Hydrologic Unit Code 07080208
Latitude  41°48'45.8", Longitude  92°03'52.6" NAD27
Drainage area 2,794  square miles
Gage datum 720.45 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 1956-10-01 -> 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 1,060 887 2,020 3,620 3,400 4,140 3,840 1,820 1,350 1,260 1,250 1,130
2 1,050 925 2,010 3,590 3,260 4,050 3,690 1,730 1,320 1,360 1,380 1,130
3 1,030 907 2,060 3,630 3,160 3,920 3,570 1,590 1,320 1,380 1,360 1,090
4 1,010 915 2,270 3,610 3,150 3,700 3,540 1,530 1,390 1,330 1,350 1,060
5 973 955 2,400 3,410 3,180 3,530 3,710 1,550 1,360 1,300 1,390 1,070
6 946 963 2,380 3,330 3,180 3,380 3,520 1,580 1,340 1,290 1,320 1,070
7 910 968 2,340 3,280 3,270 3,370 3,280 1,430 1,250 1,260 1,260 1,030
8 890 1,010 2,450 3,160 3,250 3,480 3,190 1,320 1,230 1,250 1,210 1,020
9 861 1,070 2,540 3,060 3,230 3,530 3,240 1,360 1,180 1,340 1,180 1,010
10 833 1,060 2,740 3,010 3,310 3,870 3,230 1,430 1,130 1,370 1,170 975
11 825 1,050 2,850 2,980 3,330 3,770 3,210 1,400 1,070 1,340 1,160 947
12 887 1,020 2,920 2,940 3,400 4,000 3,310 1,520 1,020 1,310 1,220 933
13 962 1,000 3,230 2,970 3,470 4,170 3,180 1,470 1,100 1,290 1,190 916
14 934 1,070 3,380 3,000 3,560 4,080 3,100 1,540 1,090 1,300 1,160 1,020
15 869 1,120 3,440 3,020 3,410 4,140 2,950 1,520 1,070 1,310 1,120 1,090
16 835 1,130 3,490 3,070 3,360 4,110 2,720 1,540 1,020 1,280 1,140 1,080
17 912 1,150 3,470 3,130 3,440 4,330 2,480 1,520 983 1,230 1,130 1,090
18 898 1,310 3,680 3,300 3,430 4,420 2,650 1,460 1,100 1,240 1,140 1,160
19 889 1,560 3,930 3,390 3,370 4,380 2,780 1,420 1,090 1,210 1,140 1,160
20 919 1,760 4,130 3,470 3,250 4,330 2,740 1,450 1,090 1,200 1,130 1,120
21 917 1,900 4,000 3,470 3,270 4,260 2,590 1,350 1,150 1,170 1,150 1,090
22 905 2,030 3,960 3,370 3,270 4,180 2,340 1,360 1,100 1,150 1,140 1,090
23 975 2,140 4,030 3,280 3,220 4,260 2,180 1,290 1,160 1,230 1,140 1,050
24 925 2,130 3,890 3,260 3,330 4,170 2,080 1,220 1,140 1,290 1,100 1,040
25 891 2,090 3,560 3,240 3,440 4,110 2,020 1,160 1,260 1,270 1,100 1,050
26 835 2,050 3,360 3,150 3,570 4,000 1,990 1,180 1,330 1,260 1,090 1,090
27 841 2,120 3,290 3,120 3,900 3,910 1,920 1,350 1,300 1,220 1,110 1,110
28 841 2,070 3,280 3,130 4,150 3,810 1,890 1,460 1,250 1,180 1,120 1,180
29 824 2,030 3,250 3,260 4,390 3,740 1,880 1,530 1,240 1,150 1,120 1,180
30 852   3,370 3,430 4,330 3,860 1,860 1,630 1,250 1,190 1,130 1,150
31 887   3,680   4,230   1,820 1,440   1,190   1,110