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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 -> 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 72 39 88 101 19 8.2 4 1.9 1.2 1.8 3.2 37
2 61 48 111 68 17 7.9 3.9 1.9 1.2 1.6 3.4 55
3 57 63 96 59 18 7.6 3.8 1.9 1.2 1.5 2.9 29
4 152 51 95 49 16 7.8 3.7 1.8 1.2 1.5 4.4 30
5 91 48 90 53 17 7.6 3.6 1.7 1.2 1.7 3.5 21
6 57 64 94 48 16 7.1 3.5 1.7 1.1 1.4 6.6 18
7 65 119 85 59 15 6.9 3.5 1.6 1.1 1.5 4.4 17
8 74 115 79 42 14 6.7 3.5 1.6 1.1 1.6 5.3 19
9 81 94 63 37 14 7 3.7 1.6 1.2 1.5 4.3 31
10 57 85 83 36 13 6.4 3.4 1.6 1.2 1.9 7 34
11 72 71 82 60 12 6.2 3.3 1.5 1.2 3 41 67
12 60 109 72 44 12 6 3.2 1.5 1.1 2.3 16 37
13 109 125 100 60 11 5.9 3.1 1.5 1.2 4.5 28 31
14 110 147 70 36 11 5.8 3 1.6 1.2 2.8 34 35
15 64 141 74 34 11 5.7 2.8 1.7 1.2 2.7 36 39
16 125 162 83 30 12 5.6 2.8 1.7 1.2 4.1 37 63
17 103 148 81 27 11 5.5 2.7 1.6 1.2 4 22 37
18 110 138 64 25 11 5.3 2.6 1.6 1.2 2.7 17 42
19 92 144 61 24 14 5.2 2.5 2.1 1.2 2.6 15 59
20 108 151 75 24 12 5.2 2.5 1.7 1.2 3.1 20 72
21 110 101 77 22 12 5 2.4 1.6 1.4 2.7 14 74
22 95 83 96 21 12 4.9 2.4 1.6 1.3 2.3 11 93
23 70 71 82 22 11 4.7 2.3 1.5 1.2 2.9 10 92
24 81 64 105 22 10 4.6 2.3 1.5 1.4 3.8 22 83
25 77 81 91 22 9.7 4.5 2.3 1.5 1.4 10 15 81
26 80 84 99 21 9.5 4.4 2.2 1.5 1.2 5.3 12 57
27 74 84 79 19 9.5 4.3 2.2 1.4 1.3 3.3 20 84
28 60 72 84 25 10 4.4 2.1 1.3 1.2 3.2 20 64
29 55 37 64 21 9 4.6 2.1 1.3 1.2 3.1 26 121
30 46   56 23 8.6 4.2 2 1.4 1.5 3.2 29 87
31 49   78   8.5   2 1.3   3.1   71