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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 05455700 Iowa River near Lone Tree, IA


Louisa County, Iowa
Hydrologic Unit Code 07080209
Latitude  41°25'25.6", Longitude  91°28'42.7" NAD83
Drainage area 4,293  square miles
Gage datum 587.93 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 1958-10-01 -> 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 1,980 1,700 3,670 5,350 5,400 5,560 5,600 3,300 2,280 1,720 2,070 2,100
2 1,970 1,780 3,740 5,240 5,050 5,380 5,680 3,120 2,330 1,660 2,220 2,200
3 1,840 1,800 3,840 4,920 4,840 5,250 5,680 3,040 2,290 1,700 2,310 2,080
4 1,750 1,760 3,990 4,740 5,000 5,110 5,460 2,880 2,230 1,750 2,160 1,980
5 1,690 1,800 4,410 4,740 4,920 5,220 5,390 2,910 2,240 1,810 2,240 1,980
6 1,640 1,800 4,220 4,760 4,750 5,140 5,510 3,020 2,210 1,830 2,160 2,030
7 1,590 1,820 3,910 4,810 4,840 5,050 5,740 2,980 2,240 1,870 2,030 1,980
8 1,590 1,900 4,010 4,760 4,980 5,200 5,550 2,910 2,150 1,930 1,920 1,940
9 1,600 1,940 4,230 4,860 4,930 5,360 5,350 3,010 2,170 1,880 1,820 1,870
10 1,530 2,070 4,670 5,030 4,980 5,530 5,250 3,040 2,310 1,940 1,840 1,840
11 1,500 2,210 4,790 5,150 4,970 5,460 5,220 2,910 2,290 1,970 1,880 1,860
12 1,530 2,090 4,900 4,930 5,060 5,380 5,030 2,860 2,100 1,910 1,910 1,840
13 1,560 2,030 5,160 4,870 5,040 5,590 4,810 2,810 2,120 1,820 1,910 1,910
14 1,530 2,080 5,400 4,940 5,160 5,830 4,750 2,680 2,150 1,800 1,900 2,030
15 1,470 2,120 5,420 4,880 5,050 6,110 4,810 2,680 2,140 1,860 1,870 2,180
16 1,390 2,140 5,250 4,910 4,850 6,170 4,750 2,690 2,090 1,870 1,980 2,430
17 1,410 2,160 5,060 4,970 5,060 5,850 4,620 2,700 2,010 1,850 2,000 2,340
18 1,390 2,220 5,100 5,290 5,390 5,760 4,610 2,490 2,090 2,020 2,020 2,140
19 1,360 2,400 5,230 5,450 5,390 5,710 4,640 2,380 2,100 1,990 1,970 1,970
20 1,410 2,750 5,460 5,240 5,170 5,720 4,630 2,430 2,030 1,890 1,940 1,890
21 1,470 3,130 5,410 5,250 4,910 5,780 4,580 2,570 2,050 1,810 2,060 1,850
22 1,470 3,150 5,070 5,280 4,770 5,740 4,490 2,420 2,190 1,720 2,110 1,820
23 1,630 3,330 5,010 5,060 4,820 5,700 4,170 2,380 2,030 1,810 2,020 1,780
24 1,740 3,380 4,970 4,990 4,820 5,640 4,180 2,370 2,040 1,890 1,960 1,740
25 1,730 3,300 4,700 5,040 4,870 5,600 4,000 2,250 1,930 1,950 1,930 1,840
26 1,740 3,250 4,680 5,150 4,880 5,380 3,880 2,280 1,830 1,980 1,990 1,880
27 1,730 3,450 4,730 5,190 5,090 5,280 3,780 2,320 1,780 2,000 2,090 1,840
28 1,630 3,660 4,830 5,220 5,180 5,260 3,710 2,410 1,820 1,960 2,090 1,910
29 1,580 3,180 4,910 5,210 5,440 5,260 3,580 2,460 1,720 1,940 2,110 1,960
30 1,580   4,990 5,290 5,740 5,400 3,490 2,400 1,730 2,010 2,050 2,030
31 1,610   5,210   5,830   3,420 2,320   2,020   2,070