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USGS Surface-Water 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 -> 2020-09-30)

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 -2.5 27 166 157 129 56 111 76 86 102 134 134
2 45 147 150 149 106 34 93 82 85 87 108 138
3 156 262 144 147 128 28 125 87 87 85 95 135
4 219 221 168 146 96 57 108 75 87 99 85 117
5 216 204 131 122 85 35 136 76 83 93 97 184
6 225 170 149 128 52 20 102 84 75 73 95 151
7 191 -87 141 132 31 59 102 89 72 73 98 155
8 136 126 115 144 63 70 114 97 65 53 103 101
9 154 139 91 99 61 63 115 79 62 70 95 90
10 145 129 57 74 76 101 105 72 56 83 130 114
11 83 135 94 5.7 92 86 75 71 55 88 113 124
12 135 135 120 105 19 86 88 68 72 93 102 122
13 154 214 181 151 4.6 112 85 72 83 93 91 126
14 206 193 163 123 53 125 54 72 66 77 85 153
15 214 207 127 120 45 94 81 93 84 54 88 148
16 170 175 130 99 -1 119 94 97 59 71 83 149
17 164 115 140 111 -9.5 111 87 85 61 63 105 162
18 112 114 135 64 -16 93 116 70 74 82 124 145
19 87 114 117 101 -53 106 115 61 79 108 129 148
20 99 130 102 121 -2.4 141 104 62 82 96 121 135
21 128 142 133 96 -15 118 54 76 81 107 113 102
22 183 160 108 58 99 109 76 78 78 102 114 132
23 193 166 123 -68 45 106 98 93 71 108 114 147
24 188 173 115 -56 48 57 81 90 74 83 116 203
25 209 199 143 58 74 67 98 100 66 76 110 158
26 191 166 126 34 100 145 96 82 55 93 106 171
27 197 145 120 118 66 97 109 67 61 104 126 86
28 184 117 124 122 39 93 93 68 61 74 108 99
29 150 181 105 156 26 88 78 55 70 102 120 142
30 163   102 178 -11 79 83 57 62 104 138 161
31 91   81   35   83 66   123   73