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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 14013000 MILL CREEK NEAR WALLA WALLA, WA


Walla Walla County, Washington
Hydrologic Unit Code 17070102
Latitude  46°00'29", Longitude 118°07'03" NAD27
Drainage area 59.6  square miles
Gage datum 1,998.59 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 1913-10-01 -> 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
1 118 163 156 189 155 99 46 32 31 34 49 113
2 106 138 154 184 155 96 45 32 31 34 47 121
3 101 127 146 173 154 101 44 31 31 35 45 107
4 101 127 141 163 155 98 43 31 31 34 52 97
5 119 125 137 178 157 100 42 31 31 34 55 92
6 137 152 139 187 156 97 41 31 31 34 53 98
7 140 190 137 188 162 101 40 31 31 35 61 113
8 135 144 137 197 161 105 40 31 31 34 63 103
9 122 160 159 199 158 100 39 31 31 35 60 93
10 118 157 188 192 152 93 38 31 31 35 55 103
11 108 143 173 189 154 89 37 31 32 36 61 115
12 112 135 164 182 150 86 37 30 31 36 68 126
13 119 138 166 180 148 97 36 30 31 35 71 125
14 135 148 170 189 146 87 36 30 32 36 65 117
15 155 151 176 179 145 80 36 30 33 36 64 106
16 156 161 180 170 140 75 35 30 32 36 64 100
17 154 164 178 169 139 71 35 30 32 36 63 98
18 154 161 173 172 138 68 34 30 32 36 63 97
19 148 172 174 175 139 66 34 30 32 37 69 96
20 139 166 170 189 137 63 34 30 33 40 75 106
21 133 164 165 185 131 61 33 30 33 42 77 120
22 128 167 167 171 125 58 33 31 32 44 80 128
23 135 179 166 177 121 55 34 31 33 44 85 129
24 154 182 166 184 115 54 33 31 32 44 92 109
25 152 155 171 169 112 52 33 31 32 42 102 113
26 139 158 173 169 114 55 33 31 33 41 102 113
27 133 145 178 166 114 55 33 31 33 40 100 114
28 146 147 170 164 112 51 33 30 33 41 107 120
29 166 175 174 160 112 49 32 30 33 46 101 125
30 162   184 157 108 48 32 30 34 45 96 126
31 159   187   106   32 31   47   117