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USGS Daily Statistics for Iowa

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Boating safety tips are available from the U.S. Coast Guard.

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 05465700 Iowa River at Oakville, IA


Louisa County, Iowa
Hydrologic Unit Code 07080209
Latitude  41°06'11.5", Longitude  91°03'48.7" NAD83
Drainage area 12,630  square miles
Gage datum 535.64 feet above NGVD29
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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 2008-10-01 -> 2020-09-30)

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 10,300 7,450 11,400 17,800 21,800 26,400 28,200 11,500 11,100 17,100 13,100 9,220
2 10,100 7,550 11,100 17,300 22,000 26,700 29,400 10,300 10,600 16,200 12,900 9,830
3 10,200 7,640 10,500 16,900 21,700 26,600 30,500 10,000 10,800 15,100 12,400 10,200
4 9,620 7,790 10,300 16,500 22,600 26,000 29,800 9,960 10,500 14,700 12,000 9,580
5 9,050 7,760 10,300 16,500 22,700 25,300 28,300 9,800 10,600 14,700 11,800 9,170
6 8,480 8,110 10,300 16,500 21,900 23,600 26,700 9,700 10,600 15,000 11,700 9,050
7 8,230 8,370 10,100 15,900 21,500 21,800 26,300 9,220 11,200 15,400 11,400 8,820
8 8,460 8,560 10,100 15,400 20,900 20,700 24,900 8,640 12,400 16,500 10,900 8,520
9 8,850 8,540 10,800 15,100 20,300 20,000 22,400 8,430 12,800 16,900 10,300 8,250
10 8,680 7,930 13,500 15,000 20,200 19,700 20,600 8,740 13,200 16,800 9,800 7,920
11 8,380 7,530 18,200 15,400 20,900 19,800 20,400 9,250 13,600 16,500 9,550 7,570
12 8,120 7,400 20,800 15,300 20,800 19,300 18,900 10,100 13,500 16,500 9,400 7,200
13 7,640 6,780 22,200 14,500 21,000 20,200 18,000 11,500 12,600 16,600 9,250 6,970
14 7,180 6,310 22,800 14,100 21,100 21,200 17,500 11,700 12,300 16,400 8,880 7,400
15 7,070 6,020 23,400 15,000 21,000 22,200 16,500 10,900 11,500 16,400 8,650 8,190
16 7,020 5,950 24,100 15,900 21,100 23,200 15,300 10,000 10,700 15,900 8,310 8,690
17 7,020 6,060 24,100 16,600 20,500 23,700 14,800 9,320 9,700 15,200 8,190 8,950
18 7,110 6,930 23,400 18,200 20,100 24,000 14,000 8,600 9,090 14,400 8,390 8,920
19 7,130 8,220 23,700 21,000 20,300 24,100 13,200 8,180 9,510 13,500 8,620 8,460
20 6,990 9,070 24,100 23,200 20,100 23,500 12,900 8,070 9,890 12,400 8,620 8,380
21 7,180 11,200 23,700 21,700 19,300 24,700 12,600 8,140 9,980 11,600 8,400 8,540
22 7,480 12,100 23,000 19,400 18,600 26,700 13,300 8,270 10,300 10,900 8,130 8,670
23 7,540 11,400 22,000 17,600 18,200 27,400 14,200 7,650 10,400 11,100 8,060 8,750
24 8,040 12,000 21,000 16,600 18,000 27,100 14,000 7,380 11,000 11,700 7,860 8,860
25 8,410 13,500 20,300 17,100 18,200 27,400 14,200 7,730 11,900 11,800 8,090 8,980
26 8,660 14,100 19,700 17,200 19,200 27,500 14,200 7,650 12,600 11,800 8,500 9,720
27 8,880 13,400 19,200 17,700 21,600 27,800 14,100 8,030 13,500 11,800 9,410 9,970
28 8,750 12,400 18,700 18,200 23,000 27,900 13,600 9,210 14,500 11,800 9,960 10,200
29 8,200 13,200 18,100 19,400 24,300 27,300 13,000 10,500 16,500 11,700 9,890 10,400
30 7,880   17,900 20,800 25,800 27,400 12,700 11,400 17,500 12,300 9,500 10,400
31 7,650   18,000   26,700   12,200 11,700   12,800   10,400