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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 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 -> 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 2,940 3,650 7,020 6,700 13,800 19,100 20,100 5,890 3,770 1,860 2,480 2,370
2 2,730 3,660 7,070 7,380 13,500 17,900 19,600 6,050 4,850 1,840 2,520 2,300
3 2,820 3,490 7,550 9,530 13,400 16,000 18,200 5,710 5,740 1,800 2,520 2,310
4 2,840 3,380 8,030 9,510 14,800 14,700 17,600 5,130 6,330 1,770 2,620 2,300
5 2,790 3,370 8,780 9,060 15,200 13,700 16,700 4,820 5,880 1,730 3,170 2,300
6 2,880 3,290 10,000 9,030 14,600 13,100 15,900 4,580 4,390 1,710 3,660 2,290
7 2,850 3,250 10,300 9,320 14,500 13,200 14,500 4,360 3,800 1,710 3,830 2,260
8 2,800 3,200 9,230 9,170 14,700 13,500 13,900 4,140 3,680 1,690 3,440 2,290
9 2,760 3,260 8,560 8,770 15,100 13,300 16,000 4,200 3,600 1,720 3,110 2,390
10 2,780 3,360 8,430 8,370 15,000 13,000 16,500 4,300 3,410 1,770 2,980 2,410
11 2,790 3,450 8,150 7,850 14,800 12,500 17,600 4,110 3,260 1,770 2,940 2,460
12 2,680 3,430 7,680 7,370 14,900 11,900 17,500 4,300 3,070 1,860 3,010 2,580
13 2,610 3,450 7,240 7,170 15,100 11,400 12,900 4,310 2,860 2,090 3,040 2,670
14 2,620 3,540 6,740 6,910 15,300 10,600 11,400 4,220 2,720 2,150 3,000 2,690
15 2,600 3,600 6,630 6,690 14,900 9,780 11,600 4,050 2,600 2,190 2,990 2,830
16 2,570 3,560 6,550 6,450 16,200 9,140 12,100 4,660 2,500 2,110 3,130 2,930
17 2,590 3,410 6,390 6,680 15,000 8,630 11,800 4,010 2,390 1,990 3,150 2,930
18 2,620 3,540 6,150 7,390 14,100 8,480 11,100 3,580 2,350 1,920 3,100 2,870
19 2,760 3,800 6,070 7,550 13,700 9,020 10,200 3,440 2,290 1,860 2,970 2,760
20 2,870 4,630 6,540 7,410 13,600 10,400 9,400 3,490 2,230 1,800 2,890 2,740
21 2,890 5,550 7,060 7,820 14,200 11,200 8,760 3,170 2,160 1,780 2,930 2,680
22 2,990 5,650 7,180 9,070 14,400 11,400 8,200 3,060 2,120 1,730 2,890 2,610
23 3,020 5,570 7,030 9,790 15,600 10,800 7,700 3,010 2,080 1,690 2,790 2,510
24 3,080 5,190 7,660 11,900 16,000 10,700 7,470 3,020 2,040 1,700 2,750 2,310
25 3,110 4,580 7,500 12,800 17,600 11,000 7,450 3,090 2,010 2,130 2,730 2,280
26 3,110 4,180 7,310 13,300 19,000 13,500 7,250 3,100 2,010 2,910 2,740 2,470
27 3,090 4,490 7,380 13,600 20,200 14,800 6,390 3,090 1,990 2,610 2,650 2,670
28 3,100 7,400 7,380 13,700 21,300 16,100 5,830 2,960 1,940 2,440 2,540 2,870
29 3,240 1,810 7,170 13,900 21,100 16,800 5,630 2,850 1,920 2,440 2,490 3,110
30 3,310   6,820 13,800 20,300 18,600 6,140 2,900 1,890 2,520 2,430 3,240
31 3,510   6,670   19,800   6,060 3,160   2,480   3,100