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USGS Surface-Water 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 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 -> 2022-09-30)

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 -1.2 34 165 154 129 58 115 77 84 102 126 133
2 50 150 151 148 108 36 95 83 84 87 105 134
3 157 263 144 148 127 29 125 85 85 84 94 133
4 217 222 167 148 96 55 110 76 84 94 84 116
5 207 207 132 121 88 37 137 76 81 90 97 180
6 223 171 152 128 54 22 101 83 74 74 95 150
7 194 -78 143 132 33 60 103 88 70 71 100 150
8 141 126 117 142 65 73 112 95 63 50 105 98
9 157 139 90 97 63 69 115 77 59 71 95 94
10 149 127 58 73 74 103 105 69 56 84 129 114
11 88 135 96 7.1 93 86 75 69 54 87 114 122
12 128 137 121 107 22 86 86 64 70 93 100 122
13 135 210 178 151 7.2 117 83 70 81 92 85 123
14 188 190 160 121 54 127 55 71 66 79 86 148
15 216 201 127 118 48 93 80 94 85 54 83 144
16 181 179 132 100 1.2 119 93 98 62 70 81 146
17 172 124 138 112 -4.4 110 87 87 61 64 99 158
18 120 119 135 65 -12 96 115 72 76 81 124 145
19 91 119 120 101 -49 109 116 62 84 106 134 150
20 104 134 105 121 2.5 141 105 62 83 96 126 134
21 133 148 135 95 -8.3 118 56 75 80 106 117 99
22 185 160 110 61 98 108 76 77 78 102 117 130
23 192 167 123 -62 48 104 96 90 70 106 118 148
24 187 174 116 -54 50 56 80 88 72 85 118 204
25 207 200 142 56 74 67 96 98 64 77 111 163
26 191 167 124 34 100 140 95 81 55 92 108 174
27 193 147 121 118 63 98 106 67 63 103 126 87
28 183 120 120 121 43 89 93 67 65 71 106 99
29 149 181 107 153 32 86 76 55 71 98 116 143
30 162   103 171 -8.5 81 82 59 63 102 136 160
31 94   81   38   84 67   121   74