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USGS Daily Statistics for California

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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 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 -> 2021-09-30)

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 90 106 20 8.5 4.2 2 1.3 1.8 3.2 37
2 61 49 114 72 18 8.2 4 2 1.2 1.6 3.4 56
3 57 64 98 61 18 7.9 3.9 2 1.3 1.5 2.9 30
4 152 52 97 51 17 8.1 3.8 1.9 1.2 1.5 4.4 31
5 91 49 92 55 17 7.9 3.7 1.8 1.2 1.7 3.4 21
6 56 66 96 50 16 7.4 3.6 1.7 1.1 1.5 6.6 19
7 64 122 87 61 15 7.2 3.6 1.7 1.1 1.5 4.4 17
8 74 118 81 44 15 7 3.6 1.7 1.1 1.6 5.3 19
9 82 96 64 39 14 7.2 3.9 1.6 1.2 1.5 4.4 31
10 57 87 85 38 13 6.7 3.6 1.7 1.3 1.9 7 34
11 72 73 86 62 13 6.5 3.4 1.6 1.2 3.1 42 68
12 61 111 75 46 12 6.3 3.3 1.6 1.2 2.3 17 38
13 111 128 104 62 12 6.1 3.2 1.6 1.2 4.6 29 22
14 112 150 73 37 11 6 3.1 1.7 1.2 2.8 35 25
15 66 145 77 35 11 5.9 3 1.8 1.2 2.8 37 37
16 127 165 87 31 12 5.8 2.9 1.7 1.2 4.2 38 54
17 106 151 85 28 11 5.7 2.8 1.6 1.2 4.1 23 35
18 113 141 67 26 11 5.6 2.7 1.6 1.2 2.7 18 41
19 93 148 64 25 15 5.5 2.6 2.2 1.3 2.6 15 60
20 110 154 78 25 13 5.4 2.6 1.7 1.3 3.2 21 73
21 113 104 81 22 12 5.2 2.5 1.7 1.4 2.8 14 75
22 97 84 100 21 12 5.1 2.5 1.6 1.3 2.4 11 93
23 72 72 85 23 11 4.9 2.4 1.5 1.2 3 10 86
24 83 66 109 23 11 4.8 2.4 1.5 1.4 2.5 22 78
25 79 82 95 23 10 4.7 2.4 1.6 1.4 3.9 15 78
26 82 86 104 22 9.9 4.6 2.3 1.5 1.2 4.6 12 54
27 75 86 83 20 9.9 4.5 2.3 1.4 1.4 3 20 78
28 61 74 88 26 11 4.6 2.2 1.4 1.3 3 20 60
29 57 37 66 22 9.4 4.8 2.2 1.4 1.2 3.1 27 120
30 47   59 24 8.9 4.4 2.1 1.4 1.5 3.1 30 85
31 50   82   8.9   2.1 1.4   3.1   70