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USGS 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 -> 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
1 119 181 167 209 134 62 9.7 2.7 3 6.5 22 97
2 118 164 170 205 132 57 8.1 2.7 3.2 5.5 19 113
3 110 144 163 187 128 63 7.4 2.6 3.1 5.8 16 107
4 111 146 156 170 128 60 7 2.6 3.1 6 19 95
5 125 145 150 176 128 61 6.5 2.7 3.2 4.7 26 87
6 142 151 154 191 126 59 6 2.7 3.3 4.4 23 95
7 157 187 155 192 129 67 5.5 2.8 3.4 4.6 33 105
8 155 168 154 200 127 73 4.9 2.7 3.3 5.1 36 98
9 143 176 165 196 127 68 4.6 2.7 3.2 5.5 34 88
10 144 177 199 194 118 61 5 2.7 3.4 6.3 28 94
11 129 167 185 189 116 58 4.3 2.8 3.6 6.8 32 109
12 129 159 179 184 112 54 4.4 2.8 3.6 7.5 39 124
13 137 169 185 177 108 61 4.1 2.8 3.3 6.5 42 122
14 155 175 190 186 105 55 3.7 2.7 3.3 7.2 39 122
15 185 174 196 177 105 46 3.5 2.7 3.4 7.8 38 104
16 184 183 202 162 103 40 3.4 2.6 3.4 7.4 36 94
17 189 190 197 157 104 36 3.4 2.6 3.5 7.3 37 96
18 189 187 192 155 106 33 3.1 2.6 3.9 7.7 39 97
19 183 199 195 158 106 30 3 2.4 4.3 7.9 43 96
20 170 193 186 171 105 28 2.8 2.5 4.4 11 51 106
21 157 188 185 169 99 25 2.8 2.5 4.1 13 55 122
22 149 192 189 157 91 22 2.7 3 3.9 15 56 121
23 155 195 187 157 83 19 2.8 3.1 4 17 62 125
24 180 199 186 161 76 16 3 3 4.1 15 67 117
25 182 181 194 151 70 14 2.9 3.1 4.3 13 84 119
26 165 171 192 144 71 15 3 3 4.7 12 86 122
27 157 158 194 140 72 18 2.9 2.9 4.9 11 85 117
28 167 155 186 142 70 15 2.9 2.8 5 11 89 122
29 172 175 185 138 70 14 2.7 2.8 5.1 16 83 127
30 172   195 136 69 13 2.6 3.1 6 15 81 130
31 179   205   67   2.7 3.3   16   124