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USGS Surface-Water 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 -> 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 2,530 3,290 8,550 9,000 11,900 10,200 9,960 3,360 3,360 1,840 2,570 2,300
2 2,260 3,320 8,640 8,820 11,900 9,640 9,160 3,330 4,990 1,830 2,520 2,320
3 2,460 3,250 9,270 8,720 11,900 9,020 8,320 3,250 6,310 1,780 2,570 2,350
4 2,640 3,280 9,820 8,950 13,700 9,000 7,730 3,140 7,210 1,740 2,590 2,340
5 2,730 3,310 10,400 9,700 15,500 8,570 7,880 3,090 6,670 1,720 2,730 2,310
6 2,810 3,320 11,100 10,500 15,300 8,370 7,240 2,960 4,730 1,720 2,910 2,290
7 2,780 3,410 11,300 11,100 14,900 8,810 6,920 2,880 3,980 1,730 2,860 2,250
8 2,720 3,450 10,000 10,900 15,000 9,360 6,660 2,840 3,870 1,720 2,730 2,260
9 2,640 3,600 9,150 10,500 15,500 9,460 8,940 3,050 3,820 1,760 2,680 2,260
10 2,590 3,780 8,950 10,200 15,300 9,320 8,660 3,330 3,590 1,820 2,620 2,250
11 2,530 3,940 8,510 9,530 14,900 9,270 10,000 3,170 3,430 1,850 2,630 2,340
12 2,390 3,980 7,900 8,880 14,200 9,310 10,800 3,470 3,220 1,960 2,780 2,440
13 2,340 3,950 7,330 8,780 13,900 9,280 8,210 3,580 2,950 2,280 2,880 2,500
14 2,420 3,890 6,680 8,440 13,000 8,970 7,250 3,550 2,790 2,370 2,880 2,470
15 2,420 3,840 6,470 8,160 12,100 8,530 7,480 3,230 2,630 2,410 2,940 2,550
16 2,430 3,770 6,300 7,970 11,600 8,260 7,870 2,970 2,510 2,320 3,120 2,640
17 2,420 3,700 6,150 8,480 11,700 7,950 7,060 2,800 2,380 2,170 3,170 2,500
18 2,460 3,870 5,990 9,800 12,100 7,920 6,410 2,660 2,340 2,080 3,100 2,380
19 2,710 4,230 5,980 10,100 12,800 8,750 5,910 2,640 2,270 2,000 2,930 2,320
20 2,930 5,330 6,620 9,660 13,500 10,200 5,590 2,840 2,220 1,930 2,780 2,440
21 2,960 6,530 7,310 9,560 13,800 10,700 5,240 2,520 2,140 1,910 2,790 2,590
22 2,990 6,620 7,560 9,540 13,000 9,860 4,870 2,460 2,090 1,830 2,740 2,600
23 3,000 6,500 7,460 10,300 11,700 8,940 4,530 2,450 2,040 1,780 2,640 2,470
24 3,030 5,970 8,320 13,000 10,700 8,200 4,260 2,520 2,010 1,790 2,600 2,250
25 3,030 5,180 8,130 14,100 10,000 8,310 4,030 2,680 1,980 2,350 2,580 2,240
26 3,000 4,700 7,900 14,300 9,770 10,900 3,800 2,750 1,980 3,300 2,580 2,490
27 2,950 5,120 11,000 14,000 9,790 11,500 3,630 2,770 1,970 2,920 2,480 2,730
28 2,930 8,950 10,800 13,200 9,620 11,600 3,410 2,620 1,920 2,760 2,410 2,900
29 3,030 1,810 10,300 12,400 9,550 10,700 3,340 2,530 1,900 2,770 2,370 2,990
30 3,100   9,610 11,900 10,000 10,600 3,550 2,450 1,870 2,890 2,340 2,930
31 3,240   9,220   10,300   3,540 2,470   2,780   2,750