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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 11092450 LOS ANGELES R A SEPULVEDA DAM CA


Los Angeles County, California
Hydrologic Unit Code 18070105
Latitude  34°09'42", Longitude 118°27'57" NAD27
Drainage area 158  square miles
Gage datum 663.00 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 1942-10-01 -> 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 43 55 230 117 29 28 27 28 28 27 33 39
2 115 131 173 45 30 27 27 28 28 27 27 83
3 140 117 83 80 66 27 27 28 27 27 29 63
4 121 106 291 84 27 27 27 28 29 27 31 80
5 187 108 109 70 28 27 27 28 35 36 39 71
6 172 245 136 42 37 27 27 28 31 31 65 102
7 225 101 101 52 32 26 26 32 26 29 109 51
8 87 108 174 66 66 26 27 28 27 27 62 30
9 286 250 42 62 49 27 27 28 27 26 46 35
10 172 284 61 33 29 28 27 28 47 26 31 36
11 91 302 62 47 31 27 29 30 30 30 39 42
12 99 286 51 55 31 27 28 28 27 27 42 120
13 63 95 55 67 28 28 28 27 26 40 33 42
14 121 94 44 76 30 28 28 27 27 55 58 37
15 139 52 194 48 28 28 28 28 41 29 59 102
16 212 113 111 32 33 30 28 27 27 28 76 99
17 106 192 73 31 29 28 28 63 27 55 109 56
18 216 159 41 37 31 27 36 29 27 41 43 134
19 139 211 39 31 31 27 30 27 27 45 53 135
20 199 132 234 42 27 26 29 28 26 71 104 104
21 159 201 145 34 27 27 29 28 29 29 136 95
22 216 216 120 36 43 27 28 28 44 28 143 113
23 136 177 51 29 27 27 28 28 27 26 45 65
24 191 111 35 31 27 27 28 28 27 32 52 108
25 274 172 66 30 26 27 28 28 27 34 44 87
26 169 112 40 39 26 28 28 29 27 59 61 71
27 131 141 93 39 26 27 28 28 26 47 28 100
28 62 249 103 48 26 27 28 28 29 31 48 221
29 41 43 41 29 27 27 28 27 29 28 155 216
30 80   42 33 27 27 28 27 27 33 72 56
31 97   66   27   28 28   27   82