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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 05485605 Fourmile Creek near Ankeny, IA DS1


Polk County, Iowa
Hydrologic Unit Code 07100008
Latitude  41°43'02.4", Longitude  93°34'10.6" NAD83
Drainage area 62.0  square miles
Gage datum 864.94 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 2002-10-01 -> 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 29 19 34 70 110 115 287 49 56 35 33 31
2 27 18 58 72 104 99 104 36 75 48 35 34
3 30 26 52 71 104 99 73 42 74 34 42 28
4 23 27 38 65 105 86 80 56 73 28 42 25
5 22 19 51 59 98 98 111 33 61 29 36 24
6 21 19 40 63 98 160 93 30 51 32 41 22
7 22 36 44 59 108 108 68 30 73 40 33 21
8 22 28 56 53 92 164 64 24 47 51 27 20
9 19 26 72 46 101 119 64 99 39 64 25 19
10 22 28 108 47 80 148 58 102 52 61 28 18
11 22 21 125 53 95 95 94 178 43 40 37 18
12 20 17 143 78 105 186 77 84 33 31 30 17
13 17 23 205 67 137 134 49 46 29 32 31 39
14 18 29 195 64 85 160 43 35 22 62 28 79
15 17 30 113 76 73 167 39 30 20 57 25 45
16 23 27 88 60 64 102 35 28 37 41 24 33
17 26 28 77 59 77 95 32 26 42 35 23 28
18 21 28 78 80 72 96 61 32 37 36 23 26
19 18 36 79 61 90 100 57 39 40 31 25 22
20 17 34 80 76 136 102 93 49 30 27 22 22
21 22 32 67 79 178 107 60 38 43 41 22 22
22 19 33 65 102 134 88 42 24 51 50 20 22
23 22 37 68 96 152 116 40 27 33 67 21 26
24 28 33 97 95 216 100 58 23 37 57 23 33
25 25 28 83 157 203 147 42 19 47 47 22 34
26 22 28 74 148 186 214 44 22 45 37 26 32
27 21 49 66 163 222 197 51 28 33 34 31 43
28 19 36 62 128 167 127 133 29 28 39 28 36
29 21 34 59 98 149 93 66 42 28 52 25 32
30 17   69 103 170 148 71 30 31 57 25 30
31 19   75   131   76 30   40   32