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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 -> 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 73 40 95 108 20 8.7 4.2 2.1 1.3 1.8 3.2 38
2 62 49 119 73 18 8.4 4.1 2 1.2 1.7 3.4 58
3 58 65 102 63 19 8 4 2 1.3 1.6 2.9 31
4 155 53 102 52 17 8.3 3.9 1.9 1.2 1.5 4.5 32
5 93 50 96 51 18 8 3.8 1.9 1.2 1.8 3.5 21
6 58 67 100 47 16 7.5 3.7 1.8 1.1 1.5 6.8 19
7 66 124 91 60 16 7.3 3.7 1.7 1.1 1.6 4.5 18
8 76 120 85 44 15 7.1 3.6 1.7 1.1 1.6 5.5 20
9 84 98 67 39 14 7.4 3.9 1.6 1.2 1.6 4.5 32
10 59 89 89 38 13 6.8 3.6 1.7 1.3 2 7.2 35
11 74 74 88 63 13 6.6 3.5 1.6 1.3 3.2 43 70
12 62 113 76 47 12 6.4 3.4 1.6 1.2 2.4 17 38
13 114 134 107 64 12 6.2 3.3 1.6 1.2 4.8 29 23
14 115 157 75 38 11 6.1 3.2 1.7 1.2 2.9 36 25
15 67 151 79 36 11 6 3 1.8 1.2 2.9 38 38
16 130 172 88 31 12 5.9 2.9 1.7 1.2 4.3 39 56
17 108 158 86 28 11 5.8 2.9 1.6 1.2 4.2 23 36
18 115 147 68 27 11 5.7 2.8 1.7 1.3 2.8 18 42
19 96 154 65 25 15 5.5 2.7 2.2 1.3 2.7 15 61
20 113 161 80 25 13 5.5 2.6 1.7 1.3 3.2 21 74
21 115 108 83 23 12 5.3 2.6 1.7 1.4 2.8 15 77
22 99 88 103 22 12 5.1 2.5 1.6 1.3 2.4 12 96
23 73 76 87 23 11 5 2.5 1.5 1.3 3.1 11 88
24 84 69 112 23 11 4.9 2.4 1.5 1.4 2.6 23 80
25 81 86 97 24 10 4.8 2.4 1.6 1.4 4 15 80
26 84 90 106 22 10 4.6 2.4 1.5 1.3 4.7 12 55
27 75 90 84 20 10 4.6 2.3 1.5 1.4 3.1 20 80
28 59 77 90 27 11 4.6 2.3 1.4 1.3 3.1 21 61
29 56 40 68 22 9.5 4.9 2.3 1.4 1.2 3.1 27 123
30 48   60 24 9 4.5 2.2 1.4 1.6 3.2 30 87
31 51   84   9   2.1 1.4   3.2   72