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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 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 302.73 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 1999-10-01 -> 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
1 108 69 112 112 38 20 4 2.5 2.3 2.2 2.2 3
2 74 72 128 100 36 20 3.9 2.5 2.3 2.2 2 37
3 56 80 146 98 49 20 3.8 2.5 2.3 2 1.8 11
4 49 113 170 125 45 20 3.8 2.5 2.3 1.9 1.9 4
5 77 101 146 118 40 14 3.8 2.6 2.3 2.6 1.9 3.2
6 64 78 151 98 37 8.6 3.8 2.6 2.3 2.6 1.9 3.8
7 62 119 150 83 33 11 3.6 2.6 2.3 2.6 1.8 3.4
8 91 85 133 70 32 11 3.5 2.7 2.3 2.6 4.7 6.5
9 109 83 133 58 31 9.8 3.3 2.7 2.3 2.4 5.2 4.7
10 147 102 212 53 29 8.9 3.3 2.6 2.3 2 2 11
11 206 81 184 54 27 8.8 3.2 2.6 2.3 1.9 1.9 33
12 134 72 163 64 26 8.6 3.2 2.5 2.3 1.9 1.9 34
13 91 85 147 71 25 9.7 3.1 2.5 2.3 1.9 1.9 8.5
14 125 111 135 61 25 11 3.1 2.5 2.3 1.9 2 15
15 152 95 121 56 25 11 3.2 2.5 2.3 2.3 1.9 13
16 187 95 113 58 25 11 3.1 2.5 2.4 3.3 2 60
17 159 88 99 60 24 11 3 2.4 2.4 3.2 2.1 19
18 119 84 88 56 23 11 2.9 2.4 2.5 3.3 2.1 11
19 126 85 87 54 23 10 2.9 2.5 2.4 3.2 2 29
20 125 125 112 55 22 10 2.8 2.5 2.4 3.3 2 45
21 110 127 102 56 22 10 2.8 2.4 2.3 3.3 2.1 37
22 134 103 157 55 22 9.9 2.7 2.5 2.4 3.5 2 55
23 110 108 165 52 21 9.8 2.7 2.4 2.4 3.5 2 76
24 82 125 135 51 21 9.8 2.7 2.4 2.4 3.4 2.1 55
25 95 135 149 48 21 9.7 2.6 2.4 2.3 10 2.1 38
26 84 128 132 42 20 7 2.6 2.4 2.3 4 2.1 49
27 80 135 115 41 20 4.2 2.6 2.3 2.3 3.4 2.5 58
28 85 146 120 42 20 4.2 2.6 2.3 2.3 3.4 2.8 41
29 78 139 127 43 20 4.2 2.6 2.3 2.4 3.1 2.8 80
30 69   129 41 20 4 2.5 2.3 2.4 2.3 2.9 82
31 66   116   20   2.5 2.3   2.3   240