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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 06601200 Missouri River at Decatur, NE


Monona County, Iowa
Hydrologic Unit Code 10230001
Latitude  42°00'28.2", Longitude  96°14'34.5" NAD83
Drainage area 316,200  square miles
Gage datum 1,010.56 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 1987-10-01 -> 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 19,400 19,200 20,400 34,900 36,300 40,400 42,800 40,200 38,800 39,200 34,700 27,400
2 19,100 19,200 20,500 35,100 36,400 40,400 42,500 40,100 39,000 39,200 34,500 27,200
3 19,200 19,100 20,300 34,800 36,400 40,300 42,200 40,000 39,300 39,100 34,400 26,800
4 19,500 19,100 20,400 34,400 36,500 40,300 41,900 40,000 39,500 38,900 34,400 26,300
5 19,500 19,100 20,500 34,200 36,500 40,000 42,100 40,300 39,400 38,900 34,400 25,600
6 19,200 19,300 20,600 34,200 36,200 39,900 42,100 40,200 39,400 38,800 34,400 24,800
7 19,300 19,400 20,600 34,400 35,800 40,300 41,700 40,100 39,400 38,600 34,400 24,200
8 19,100 19,300 20,500 34,700 35,900 40,000 42,000 40,200 39,500 38,700 34,200 23,600
9 19,400 19,300 20,800 34,800 36,300 40,300 42,200 40,000 39,400 38,500 34,100 23,000
10 19,500 19,500 21,200 35,000 36,600 40,800 42,200 40,100 39,400 38,300 34,000 22,400
11 19,600 19,600 21,500 35,100 36,700 41,300 42,200 40,000 39,600 38,100 33,900 21,600
12 19,700 19,500 21,600 35,400 37,100 41,300 42,000 39,800 39,800 37,900 33,800 21,100
13 19,400 19,600 22,800 35,400 37,700 41,300 41,700 39,800 39,800 37,900 33,700 20,800
14 19,200 19,900 24,600 35,500 38,100 40,700 41,800 39,800 40,000 37,800 33,500 20,800
15 19,300 20,100 25,600 35,700 37,800 41,300 41,700 39,700 40,200 37,700 33,400 20,400
16 19,400 19,800 26,400 35,800 37,900 41,900 41,600 39,800 40,600 37,500 33,500 19,800
17 19,500 19,700 27,000 35,700 37,800 42,200 41,900 39,900 40,700 37,300 33,500 19,700
18 19,500 20,100 27,500 35,400 37,300 42,500 41,900 39,900 40,700 37,200 33,500 19,800
19 19,300 20,500 27,800 35,300 37,300 42,400 40,900 39,800 40,800 37,000 33,300 19,800
20 19,200 20,600 28,300 35,500 37,300 42,500 40,600 39,700 40,600 36,800 33,200 19,600
21 19,300 20,800 29,200 35,500 37,000 42,700 40,600 39,500 40,500 36,700 33,200 19,600
22 19,400 20,500 30,300 35,300 37,400 42,700 40,700 39,600 40,600 36,600 33,000 19,700
23 19,400 20,200 30,800 35,300 37,700 42,900 40,800 39,800 40,700 36,600 32,700 19,700
24 19,400 20,100 31,100 35,400 37,800 44,100 40,500 39,500 40,600 36,600 32,300 19,600
25 19,400 20,000 31,300 35,800 37,600 44,800 40,400 39,100 40,500 36,400 31,400 19,400
26 19,400 19,900 31,900 36,100 38,000 45,700 40,600 39,100 40,400 36,300 30,400 19,500
27 19,400 19,800 32,900 36,400 38,000 45,400 40,400 39,100 40,100 36,100 29,600 19,700
28 19,400 20,000 33,600 36,400 38,600 44,800 40,400 39,100 39,900 35,700 28,800 19,700
29 19,400 22,800 34,100 36,300 39,200 44,200 40,400 39,000 39,800 35,400 28,000 19,700
30 19,200   34,600 36,200 39,200 43,300 40,300 39,100 39,600 35,100 27,700 19,600
31 19,100   34,500   39,600   40,400 38,800   34,900   19,500