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USGS Daily Statistics for Oregon

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 14211820 COLUMBIA SLOUGH AT PORTLAND, OR


Multnomah County, Oregon
Hydrologic Unit Code 17090012
Latitude  45°38'21", Longitude 122°45'43" NAD27
Gage datum 1.53 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 1989-10-01 -> 2023-09-30)

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 3.4 35 162 153 129 53 126 77 84 103 123 131
2 51 150 150 147 109 33 111 85 84 86 104 132
3 159 261 146 148 129 30 136 87 89 84 91 130
4 217 219 169 145 97 52 120 79 85 97 83 113
5 209 207 138 123 91 31 142 79 83 92 97 178
6 222 171 156 128 56 15 106 85 76 75 94 149
7 195 -70 146 133 34 61 108 90 72 72 101 149
8 146 127 119 143 61 69 115 98 63 51 104 100
9 163 142 93 103 62 60 118 78 60 72 96 96
10 157 128 64 76 78 82 109 71 57 84 131 115
11 96 134 98 16 97 51 78 67 56 87 117 123
12 132 135 122 110 26 72 85 65 71 92 108 125
13 138 205 177 152 14 107 83 71 81 92 92 124
14 189 184 159 121 54 128 55 71 68 81 91 151
15 214 199 124 121 44 91 82 95 85 57 85 148
16 180 176 130 103 -0.97 120 95 98 64 70 87 149
17 171 124 136 113 -3.5 125 89 88 61 66 100 160
18 121 117 134 67 -12 108 118 74 77 81 122 146
19 96 119 120 105 -41 119 118 65 86 103 133 154
20 107 133 106 124 10 157 107 65 84 94 128 138
21 136 147 135 98 0.96 120 61 79 80 104 118 103
22 186 158 111 63 105 119 80 80 79 105 116 133
23 193 166 124 -55 59 114 99 90 70 106 118 150
24 188 175 119 -46 59 57 85 88 72 85 121 205
25 208 198 144 58 78 66 99 97 64 77 110 170
26 191 164 125 40 101 137 94 81 55 95 110 173
27 193 143 121 117 62 98 105 68 63 106 126 92
28 181 121 119 121 41 88 93 68 65 71 107 103
29 149 181 107 150 30 89 74 55 73 103 118 143
30 160   103 169 -11 88 82 59 65 104 134 160
31 95   81   34   84 68   122   79