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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 05465100 Iowa River at Columbus Junction, IA


Louisa County, Iowa
Hydrologic Unit Code 07080209
Latitude  41°16'42", Longitude  91°20'48" NAD27
Drainage area 12,261.00  square miles
Gage datum 557.82 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 2020-10-01 -> 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 3,110 3,390 11,900 9,000 11,900 10,200 9,960 3,360 3,360 1,840 2,570 2,300
2 2,730 3,340 12,100 8,820 11,900 9,640 9,160 3,330 4,990 1,830 2,520 2,320
3 3,030 3,300 13,100 8,720 11,900 9,020 8,320 3,250 6,310 1,780 2,570 2,350
4 3,320 3,300 13,900 8,950 13,700 9,000 7,730 3,140 7,210 1,740 2,590 2,340
5 3,470 3,360 14,800 9,700 15,500 8,570 7,880 3,090 6,670 1,720 2,730 2,310
6 3,580 3,480 15,800 10,500 15,300 8,370 7,240 2,960 4,730 1,720 2,910 2,840
7 3,560 3,610 16,100 11,100 14,900 8,810 6,920 2,880 3,980 1,730 2,860 2,790
8 3,470 3,520 14,100 10,900 15,000 9,360 6,660 2,840 3,870 1,720 2,730 2,810
9 3,370 3,500 12,800 10,500 15,500 9,460 8,940 3,050 3,820 1,760 2,680 2,830
10 3,330 3,790 12,500 10,200 15,300 9,320 8,660 3,330 3,590 1,820 2,620 2,810
11 3,330 4,060 11,900 9,530 14,900 9,270 10,000 3,170 3,430 1,850 2,630 2,930
12 3,290 4,250 11,000 8,880 14,200 9,310 10,800 3,470 3,220 1,960 2,780 3,070
13 3,200 4,320 10,100 8,780 13,900 9,280 8,210 3,580 2,950 2,280 2,880 3,170
14 3,180 4,310 9,120 8,440 13,000 8,970 7,250 3,550 2,790 2,370 2,880 3,120
15 3,160 4,300 8,740 8,160 12,100 8,530 7,480 3,230 2,630 2,410 2,940 3,250
16 3,150 4,270 8,460 7,970 11,600 8,260 7,870 2,970 2,510 2,320 3,120 3,370
17 3,110 4,250 8,240 8,480 11,700 7,950 7,060 2,800 2,380 2,170 3,170 3,190
18 3,090 4,580 8,000 9,800 12,100 7,920 6,410 2,660 2,340 2,080 3,100 3,050
19 3,400 5,170 8,040 10,100 12,800 8,750 5,910 2,640 2,270 2,000 2,930 3,000
20 3,670 6,890 9,020 9,660 13,500 10,200 5,590 2,840 2,220 1,930 2,780 3,170
21 3,700 8,710 10,100 9,560 13,800 10,700 5,240 2,520 2,140 1,910 2,790 3,360
22 3,730 8,900 10,500 9,540 13,000 9,860 4,870 2,460 2,090 1,830 2,740 3,370
23 3,750 8,760 10,300 10,300 11,700 8,940 4,530 2,450 2,040 1,780 2,640 3,160
24 3,710 7,980 11,600 13,000 10,700 8,200 4,260 2,520 2,010 1,790 2,600 2,790
25 3,650 6,800 11,300 14,100 10,000 8,310 4,030 2,680 1,980 2,350 2,580 2,750
26 3,550 6,090 11,000 14,300 9,770 10,900 3,800 2,750 1,980 3,300 2,580 3,120
27 3,380 6,740 11,000 14,000 9,790 11,500 3,630 2,770 1,970 2,920 2,480 3,450
28 3,190 12,500 10,800 13,200 9,620 11,600 3,410 2,620 1,920 2,760 2,410 3,650
29 3,060   10,300 12,400 9,550 10,700 3,340 2,530 1,900 2,770 2,370 3,770
30 3,060   9,610 11,900 10,000 10,600 3,550 2,450 1,870 2,890 2,340 3,690
31 3,310   9,220   10,300   3,540 2,470   2,780   3,440