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USGS Surface-Water Daily Statistics for the Nation

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 14015000 MILL CREEK AT WALLA WALLA, WA


Walla Walla County, Washington
Hydrologic Unit Code 17070102
Latitude  46°04'35", Longitude 118°16'21" NAD27
Drainage area 95.7  square miles
Gage datum 1,120.00 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 1940-10-01 -> 2022-09-30)

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
1 118 183 159 210 132 59 9.3 2.5 2.6 5.9 21 99
2 118 166 162 206 130 54 7.8 2.3 2.8 5 18 115
3 109 146 156 188 127 60 6.9 2.2 2.7 5.2 15 108
4 110 148 150 170 127 55 6.6 2.2 2.6 5.5 16 93
5 121 147 147 178 126 55 6.1 2.3 2.8 4.2 17 85
6 138 151 153 194 122 54 5.7 2.2 2.9 4 18 94
7 156 188 155 194 115 63 5.1 2.4 3 4.2 28 105
8 155 168 155 201 115 71 4.6 2.3 2.9 4.7 33 97
9 143 178 167 196 120 67 4.3 2.3 2.8 5.2 32 87
10 144 180 203 193 113 59 4.8 2.4 2.9 6 27 91
11 128 170 189 185 113 56 4.1 2.4 2.9 6.5 31 103
12 128 162 182 182 110 51 4.2 2.4 3 7.2 38 120
13 137 172 187 177 106 48 3.8 2.4 2.7 6.2 41 120
14 155 178 191 188 101 43 3.4 2.4 2.7 7 38 122
15 187 177 196 179 100 38 3.2 2.4 2.8 7.6 38 104
16 187 188 201 164 98 34 3.2 2.3 2.8 7.1 35 94
17 192 194 195 159 100 32 3.1 2.3 2.9 7 36 96
18 192 190 190 156 103 30 2.9 2.3 3.2 7.4 39 96
19 186 202 194 156 104 27 2.9 2.1 3.7 7.6 42 95
20 172 193 185 170 103 26 2.7 2.2 3.7 11 51 106
21 159 187 183 169 99 23 2.7 2.1 3.4 13 55 123
22 149 192 183 156 90 21 2.5 2.6 3.2 14 55 123
23 154 191 181 157 82 18 2.7 2.7 3.3 17 61 125
24 179 191 180 162 76 15 2.9 2.6 3.5 15 67 117
25 182 177 188 151 70 13 2.7 2.7 3.7 12 85 118
26 165 166 188 143 71 14 2.7 2.6 4 11 87 119
27 157 154 191 140 72 18 2.7 2.5 4.3 10 86 109
28 166 152 183 142 70 15 2.7 2.4 4.4 10 90 115
29 171 166 183 138 68 13 2.5 2.5 4.4 15 84 123
30 172   194 135 65 12 2.4 2.7 5.4 14 82 127
31 180   205   63   2.6 2.9   16   122