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