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USGS Surface-Water Daily Statistics for Washington

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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 12502500 AHTANUM CREEK AT UNION GAP, WA


Yakima County, Washington
Hydrologic Unit Code 17030003
Latitude  46°32'10", Longitude 120°28'20" NAD27
Drainage area 173  square miles
Gage datum 940.00 feet above NGVD29
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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 1960-10-01 -> 2021-09-30)

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 49 98 118 138 146 185 62 16 18 23 27 41
2 54 102 117 138 145 185 59 16 18 23 27 46
3 54 93 117 135 147 184 55 16 19 23 27 56
4 51 90 115 133 148 183 52 16 19 23 28 52
5 50 103 114 131 154 183 49 16 19 23 28 49
6 53 96 121 132 159 181 46 16 20 23 28 44
7 54 101 124 135 162 176 43 16 20 23 31 42
8 67 119 122 139 165 171 41 16 19 22 30 40
9 61 127 121 142 169 164 40 16 20 23 29 43
10 60 110 135 142 171 159 38 16 20 24 28 48
11 59 107 139 141 169 153 36 16 20 24 29 44
12 56 103 138 139 168 147 36 16 20 24 30 43
13 54 104 144 140 170 142 34 15 19 24 31 49
14 59 101 149 141 173 140 32 15 20 25 30 53
15 72 102 149 136 179 137 30 16 21 25 31 54
16 106 111 148 134 187 136 29 16 21 24 32 51
17 99 119 145 132 187 132 28 16 21 23 31 49
18 90 118 143 130 188 127 27 16 22 22 32 46
19 84 121 143 128 188 121 26 16 22 22 31 45
20 79 129 144 136 189 115 25 16 23 22 33 45
21 76 134 144 143 188 112 24 17 23 22 36 48
22 72 129 140 146 188 107 23 17 23 25 36 50
23 71 123 140 148 184 102 21 18 23 24 38 48
24 77 121 139 151 183 96 20 18 23 23 40 47
25 78 125 136 151 183 90 20 19 23 23 39 47
26 75 121 135 147 182 84 19 18 23 23 41 50
27 74 117 132 144 180 78 19 18 23 24 40 55
28 73 122 130 145 178 73 18 18 23 24 38 56
29 75 169 128 146 178 70 17 18 23 25 39 52
30 79   132 147 183 67 17 18 23 25 40 50
31 88   136   185   16 18   27   47