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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 11162570 SAN GREGORIO C A SAN GREGORIO CA


San Mateo County, California
Hydrologic Unit Code 18050006
Latitude  37°19'33", Longitude 122°23'08" NAD27
Drainage area 50.9  square miles
Gage datum 11.40 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 1969-10-01 -> 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 71 39 90 103 19 8.4 4.1 2 1.2 1.8 3.2 37
2 61 49 114 70 18 8.1 4 1.9 1.2 1.6 3.4 56
3 57 64 98 60 18 7.7 3.8 1.9 1.2 1.5 2.9 30
4 152 52 97 50 16 8 3.7 1.9 1.2 1.5 4.4 31
5 91 49 92 54 17 7.7 3.6 1.8 1.2 1.7 3.4 21
6 56 66 96 49 16 7.2 3.6 1.7 1.1 1.5 6.6 19
7 64 122 87 60 15 7 3.5 1.7 1.1 1.5 4.4 17
8 74 118 81 43 14 6.9 3.5 1.6 1.1 1.6 5.3 19
9 82 96 64 38 14 7.1 3.8 1.6 1.2 1.5 4.4 31
10 57 87 85 37 13 6.6 3.5 1.6 1.2 1.9 7 34
11 72 73 84 61 12 6.3 3.3 1.5 1.2 3.1 42 68
12 61 111 73 45 12 6.1 3.3 1.5 1.1 2.3 17 38
13 111 128 102 61 11 6 3.2 1.5 1.2 4.6 29 22
14 112 150 72 37 11 5.9 3.1 1.7 1.2 2.8 35 25
15 66 145 76 34 11 5.8 2.9 1.7 1.2 2.8 37 37
16 127 165 85 30 12 5.7 2.8 1.7 1.2 4.2 38 54
17 106 151 83 27 11 5.6 2.7 1.6 1.2 4.1 23 35
18 113 141 65 26 11 5.4 2.7 1.6 1.2 2.7 18 41
19 93 148 63 24 14 5.3 2.6 2.1 1.2 2.6 15 60
20 110 154 77 24 13 5.3 2.5 1.7 1.2 3.2 21 73
21 113 104 79 22 12 5.1 2.5 1.6 1.4 2.8 14 75
22 97 84 98 21 12 4.9 2.4 1.6 1.3 2.4 11 93
23 72 72 83 22 11 4.8 2.4 1.5 1.2 3 10 86
24 83 66 107 23 10 4.7 2.3 1.5 1.4 2.5 22 78
25 79 82 93 23 9.8 4.6 2.3 1.5 1.4 3.9 15 78
26 82 86 102 21 9.7 4.5 2.3 1.5 1.2 4.6 12 54
27 75 86 81 20 9.7 4.4 2.2 1.4 1.3 3 20 78
28 61 74 86 26 10 4.5 2.2 1.3 1.2 3 20 60
29 57 37 65 21 9.2 4.7 2.2 1.3 1.2 3.1 27 120
30 47   58 23 8.7 4.3 2.1 1.4 1.5 3.1 30 85
31 50   80   8.7   2 1.3   3.1   70