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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 05420500 Mississippi River at Clinton, IA


Clinton County, Iowa
Hydrologic Unit Code 07080101
Latitude  41°46'50", Longitude  90°15'07" NAD27
Drainage area 85,600  square miles
Gage datum 562.54 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 1873-10-01 -> 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 29,300 26,600 35,600 76,200 97,600 76,200 69,400 44,200 37,300 43,300 43,000 34,400
2 29,000 26,700 36,400 78,200 96,600 76,300 68,400 43,500 37,400 43,400 43,200 34,000
3 28,800 26,600 37,200 79,600 95,600 76,000 67,700 42,800 37,400 43,400 43,500 33,400
4 28,600 26,500 37,800 80,900 94,300 75,800 67,300 42,400 37,500 43,300 43,400 32,700
5 28,600 26,600 38,800 82,300 93,100 75,700 66,500 42,000 37,300 43,000 43,100 32,300
6 28,700 26,800 39,400 84,100 92,200 75,000 65,600 41,700 37,000 42,600 42,500 31,800
7 28,600 27,000 40,100 85,300 91,300 74,100 64,700 41,500 36,900 42,300 42,200 31,300
8 28,400 27,000 40,700 86,100 90,600 73,500 64,100 41,000 36,700 42,100 42,100 30,700
9 28,300 27,200 41,000 87,000 90,000 73,100 63,500 40,600 36,700 41,900 42,200 30,100
10 28,000 27,700 41,600 87,600 89,600 73,100 62,700 39,900 37,000 42,100 42,400 29,600
11 27,600 28,100 43,300 88,400 89,100 72,600 62,000 39,200 37,200 42,200 42,400 29,200
12 27,300 28,200 45,100 89,400 88,300 71,800 61,000 38,900 37,300 42,400 42,200 28,600
13 27,300 28,000 46,800 90,400 87,400 71,500 60,700 38,200 37,800 42,400 42,100 28,400
14 27,300 28,300 48,700 91,200 86,500 71,500 60,100 37,900 38,500 42,700 42,000 28,200
15 26,900 28,900 50,600 92,200 85,300 71,500 59,000 37,800 38,800 42,900 41,500 28,100
16 26,500 29,300 52,200 93,200 84,200 71,200 57,700 37,400 38,900 42,900 41,300 28,000
17 26,700 29,700 53,100 94,500 83,200 71,100 56,700 37,200 38,700 43,100 41,200 27,900
18 26,600 29,700 53,800 95,700 82,400 71,000 55,900 37,300 38,700 43,400 40,900 27,700
19 26,500 30,100 55,100 97,000 81,700 71,100 55,200 37,400 39,000 43,800 40,800 27,500
20 26,500 31,100 57,300 98,100 80,800 71,000 54,200 37,600 39,800 43,900 40,300 27,700
21 26,700 32,200 59,100 99,200 79,800 70,500 53,400 37,900 40,800 43,600 40,000 28,100
22 26,900 32,500 60,600 100,000 79,100 70,500 53,100 37,800 41,500 43,500 39,700 28,300
23 27,300 32,900 61,500 101,000 78,500 70,600 52,800 37,700 41,600 43,500 39,300 28,700
24 27,300 33,200 62,700 101,000 78,300 70,500 52,200 37,400 41,600 43,500 38,800 28,900
25 27,100 34,100 63,600 101,000 77,900 70,700 51,100 37,300 41,800 43,600 38,200 28,800
26 27,000 34,500 65,300 101,000 77,800 70,700 50,000 37,400 42,200 43,400 37,600 28,700
27 26,900 34,700 67,200 101,000 77,500 70,700 49,200 37,500 42,600 43,400 37,100 29,000
28 26,800 35,100 68,600 100,000 76,900 70,300 48,700 37,300 42,800 43,200 36,500 29,100
29 26,700 36,600 70,100 99,600 76,700 70,100 47,800 37,300 42,900 43,000 35,700 29,300
30 26,700   71,800 98,600 76,200 70,000 46,700 37,400 43,200 42,900 35,100 29,300
31 26,600   74,200   76,100   45,300 37,300   43,000   29,200