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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 05454300 Clear Creek near Coralville, IA


Johnson County, Iowa
Hydrologic Unit Code 07080209
Latitude  41°40'36.05", Longitude  91°35'55.6" NAD83
Drainage area 98.1  square miles
Gage datum 647.29 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 1952-10-01 -> 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 41 37 79 109 114 104 152 60 38 35 59 43
2 47 35 93 107 109 100 98 48 30 39 64 46
3 41 35 136 90 111 100 63 42 31 38 53 38
4 41 43 140 94 117 99 69 38 40 32 49 38
5 34 46 120 91 126 107 101 44 49 44 46 45
6 33 46 85 97 100 93 150 71 52 73 40 42
7 37 57 82 76 109 87 95 61 40 56 36 38
8 36 67 119 74 119 110 109 75 37 56 34 37
9 32 83 151 81 108 132 136 55 39 53 37 36
10 30 67 190 95 146 125 121 84 52 54 42 35
11 33 61 141 99 130 87 110 55 35 38 38 36
12 44 53 115 89 103 123 90 66 32 33 41 36
13 58 56 166 94 127 135 116 56 48 32 39 34
14 33 51 148 100 130 136 121 58 52 38 36 48
15 34 47 112 97 107 199 92 43 46 36 36 52
16 42 51 101 107 112 137 69 94 30 31 50 45
17 50 62 99 114 187 181 78 59 49 43 56 39
18 36 67 114 164 142 100 108 41 60 64 42 36
19 45 83 181 128 134 107 118 36 44 45 39 33
20 49 108 180 130 89 129 83 97 58 34 46 32
21 41 132 120 140 86 101 80 63 79 33 49 35
22 51 120 121 120 90 137 90 41 59 34 44 34
23 56 101 123 101 102 143 76 47 52 51 43 35
24 52 98 101 126 127 119 77 37 50 44 39 37
25 40 107 88 141 121 97 64 52 60 42 39 47
26 36 90 90 118 118 96 62 59 73 43 41 44
27 40 105 87 107 137 107 84 74 40 38 51 50
28 31 84 87 107 147 112 56 96 33 38 44 61
29 33 99 93 109 222 102 51 74 41 42 41 54
30 40   105 114 136 179 55 48 39 61 43 66
31 40   122   109   78 38   45   52