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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 11162737 SAN MATEO C BL JUNCTION BOX A DAM1 NR HILLSBOROUGH


San Mateo County, California
Hydrologic Unit Code 18050004
Latitude  37°33'21.5", Longitude 122°25'03.8" NAD83
Drainage area 2.2  square miles
Gage datum 635 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 2021-10-01 -> 2024-09-30)

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 69 1.9 9 6 0.67 0.21 0.07 0.01 0. 0. 0. 0.
2 28 1.9 6 5 0.67 0.2 0.06 0.01 0. 0. 0. 0.
3 28 2.4 4.4 4.2 0.76 0.2 0.06 0.01 0. 0. 0. 0.
4 27 3.7 3.6 3.4 0.71 0.19 0.05 0.01 0. 0. 0. 0.
5 78 9.1 3.3 2.8 0.65 0.21 0.05 0.01 0. 0. 0. 0.
6 41 6.5 2.9 2.3 0.66 0.2 0.05 0.01 0. 0. 0. 0.
7 22 5.5 2.7 2.4 0.63 0.19 0.05 0.01 0. 0. 0. 0.
8 29 4.8 2.7 2.1 0.6 0.17 0.05 0. 0. 0. 0. 0.
9 74 4.3 3.8 1.9 0.58 0.16 0.04 0. 0. 0. 0. 0.
10 45 3.9 31 1.7 0.54 0.16 0.05 0. 0. 0. 0. 0.
11 36 3.8 14 1.7 0.52 0.16 0.04 0. 0. 0. 0. 0.02
12 37 3.4 25 1.5 0.49 0.16 0.04 0. 0. 0. 0. 0.06
13 30 2.9 26 1.3 0.48 0.16 0.04 0. 0. 0. 0. 0.16
14 49 2.5 27 1.3 0.47 0.15 0.03 0. 0. 0. 0. 0.37
15 43 2.2 20 1.2 0.44 0.14 0.03 0. 0. 0. 0. 0.32
16 70 2 12 1.3 0.43 0.12 0.03 0. 0. 0. 0. 0.23
17 37 2 8 1.2 0.4 0.12 0.03 0. 0. 0. 0. 0.18
18 21 1.8 6.1 1.1 0.37 0.11 0.02 0. 0. 0. 0. 0.13
19 15 1.7 6.6 1.1 0.35 0.1 0.02 0. 0. 0. 0. 0.1
20 10 1.6 7.2 1 0.35 0.1 0.01 0. 0. 0. 0. 0.09
21 7.4 1.6 17 1.1 0.34 0.1 0.01 0. 0. 0. 0. 0.09
22 6.2 1.5 44 1 0.32 0.1 0.01 0. 0. 0. 0. 0.09
23 5.1 1.5 18 1 0.3 0.1 0.01 0. 0. 0. 0. 0.09
24 4.4 1.9 11 0.95 0.29 0.09 0.01 0. 0. 0. 0. 0.09
25 3.9 2 7.3 0.88 0.28 0.09 0.01 0. 0. 0. 0. 0.09
26 3.4 2.5 5.6 0.85 0.26 0.09 0.01 0. 0. 0. 0. 0.12
27 3 6.1 4.5 0.79 0.26 0.09 0.01 0. 0. 0. 0. 17
28 2.8 10 6.8 0.75 0.26 0.09 0.01 0. 0. 0. 0. 8.7
29 2.6   9.4 0.72 0.25 0.09 0.01 0. 0. 0. 0. 5
30 2.3   9.8 0.71 0.23 0.08 0.01 0. 0. 0. 0. 20
31 2   7.5   0.22   0.01 0.   0.   244