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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 98 46 32 31 34 49 113
2 106 138 154 184 154 96 45 32 31 34 47 121
3 101 127 146 173 153 100 44 31 31 35 45 107
4 101 127 141 163 155 97 43 31 31 34 52 97
5 119 125 137 177 157 99 42 31 31 34 55 92
6 137 152 139 186 155 96 41 31 31 34 53 98
7 140 190 137 188 161 101 40 31 31 35 61 113
8 135 144 137 198 160 105 40 31 31 34 63 103
9 122 160 159 200 157 99 39 31 31 35 60 93
10 118 157 188 193 151 92 38 31 31 35 55 103
11 108 143 173 190 153 88 37 31 32 36 61 115
12 112 135 164 183 149 85 37 30 31 36 68 126
13 119 138 166 180 147 96 36 30 31 35 71 125
14 135 148 170 189 145 87 36 30 32 36 65 117
15 155 151 176 178 144 79 36 30 33 36 64 106
16 156 161 180 170 139 74 35 30 32 36 64 100
17 154 164 178 168 138 71 35 30 32 36 63 98
18 154 161 173 172 137 68 34 30 32 36 63 97
19 148 172 174 175 138 66 34 30 32 37 69 96
20 139 166 170 188 137 63 34 30 33 40 75 106
21 133 164 165 184 131 61 33 30 33 42 77 120
22 128 167 170 170 124 58 33 31 32 44 80 128
23 135 179 169 176 120 55 34 31 33 44 85 129
24 154 182 169 183 115 54 33 31 32 44 92 109
25 152 155 173 168 111 52 33 31 32 42 102 113
26 139 158 175 168 113 55 33 31 33 41 102 113
27 133 145 179 165 113 55 33 31 33 40 100 114
28 146 147 171 163 112 51 33 30 33 41 107 120
29 166 175 174 160 112 49 32 30 33 46 101 125
30 162   184 157 107 48 32 30 34 45 96 126
31 159   188   105   32 31   47   117