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USGS Daily Statistics for Washington

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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 12214500 SUMAS RIVER NEAR SUMAS, WA


Whatcom County, Washington
Hydrologic Unit Code 17110001
Latitude  48°58'30", Longitude 122°15'00" NAD27
Drainage area 31.0  square miles
Gage datum 41 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 1947-10-01 -> 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
1 106 120 126 148 85 51 34 19 20 15 74 71
2 86 107 120 151 84 46 37 18 19 14 72 108
3 76 90 121 132 86 44 40 18 19 14 72 110
4 79 93 132 124 80 42 53 19 21 16 81 84
5 87 91 125 142 76 40 39 18 20 23 94 91
6 84 84 130 136 80 40 33 18 19 21 65 93
7 91 94 111 130 82 47 31 18 17 19 50 98
8 104 84 99 118 87 45 29 17 17 20 43 105
9 116 81 96 97 71 41 28 17 16 23 38 84
10 119 74 111 90 64 38 27 17 16 24 36 85
11 92 74 117 99 64 36 26 17 16 34 38 92
12 76 81 105 97 98 34 25 19 16 42 57 94
13 73 92 127 118 86 34 24 20 15 28 59 84
14 105 95 120 115 69 33 24 18 16 22 68 77
15 106 88 110 105 62 33 24 18 16 21 86 69
16 100 98 124 112 61 35 23 19 18 23 77 67
17 106 147 136 110 64 46 23 17 20 21 87 74
18 102 119 139 95 64 43 23 16 18 21 100 92
19 88 101 134 92 59 38 22 17 18 37 87 89
20 88 96 130 122 56 39 22 19 19 60 106 95
21 110 93 127 122 56 47 23 23 18 64 97 89
22 137 131 115 108 66 40 22 23 18 48 83 75
23 124 141 106 99 66 42 22 32 22 36 110 80
24 124 135 112 95 60 47 22 44 21 31 149 99
25 129 142 108 95 54 43 21 32 19 29 105 102
26 113 153 99 100 51 38 20 26 17 28 87 115
27 108 128 96 98 53 36 20 24 18 49 77 136
28 113 111 98 104 52 34 20 24 19 78 85 211
29 123 136 85 93 50 34 20 21 23 67 82 202
30 135   92 89 47 33 20 20 17 56 70 143
31 114   112   48   19 20   68   123