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USGS Surface-Water 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 11173575 ALAMEDA C BL WELCH C NR SUNOL CA


Alameda County, California
Hydrologic Unit Code 18050004
Latitude  37°32'26", Longitude 121°51'19" NAD27
Drainage area 149  square miles
Gage datum 300 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 1999-10-01 -> 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 79 64 108 120 42 22 2.8 1.3 0.99 1 1 2.2
2 73 68 112 108 41 22 2.7 1.3 1 0.97 1 43
3 56 78 151 109 56 22 2.7 1.3 1 0.9 0.96 12
4 49 91 174 143 51 22 2.6 1.3 1 0.93 0.99 3.5
5 43 70 139 124 44 14 2.6 1.3 1 1.7 1 2.7
6 46 65 148 102 41 8 2.5 1.4 0.98 1.7 1.1 3.3
7 61 119 145 90 37 11 2.4 1.4 0.98 1.7 0.96 2.9
8 95 85 124 77 36 11 2.3 1.4 1.1 1.7 4.2 6.5
9 81 88 122 64 35 9.5 2.1 1.4 1 1.4 5 4.4
10 98 114 115 58 32 8.5 2 1.4 0.97 0.96 1.2 6.9
11 134 89 113 60 30 8.3 2 1.3 0.96 0.87 1.1 19
12 74 79 122 74 29 8.2 1.9 1.3 0.97 0.86 1.1 33
13 61 95 122 82 28 9.4 1.9 1.3 0.96 0.89 1.1 7.1
14 67 126 111 69 28 11 1.8 1.2 0.96 0.89 1.2 8.8
15 61 107 88 64 28 11 1.9 1.3 0.99 1.4 1.1 12
16 58 107 98 67 27 11 1.8 1.2 1 2.5 1.2 65
17 81 99 92 69 26 11 1.7 1.2 1 2.5 1.3 19
18 85 95 85 64 25 11 1.7 1.2 1 2.5 1.2 11
19 109 89 88 62 25 10 1.6 1.2 1 2.5 1.1 32
20 117 139 123 64 24 10 1.6 1.2 1 2.5 1.2 51
21 106 133 100 65 24 10 1.6 1.2 1 2.5 1.3 42
22 110 97 117 63 24 9.9 1.5 1.2 1 2.6 1.2 64
23 110 104 136 60 23 9.7 1.5 1.1 1 2.6 1.2 77
24 79 124 125 58 22 9.6 1.4 1.1 1.1 2.4 1.4 47
25 95 137 155 54 22 9.6 1.4 1.1 1 2.4 1.3 29
26 82 128 141 47 22 6.3 1.4 1.1 1 2.4 1.4 40
27 80 134 126 47 22 3 1.3 1 1 2.3 1.8 29
28 78 146 132 47 22 3 1.3 1 1.1 2.4 2.1 35
29 71 157 132 49 22 3 1.3 1 1.1 2.1 2.1 85
30 67   127 46 22 2.8 1.3 0.98 1.1 1.2 2.2 72
31 64   119   22   1.3 1   1.1   129