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USGS Daily Statistics for the Nation

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 655.13 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 1942-10-01 -> 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 55 55 236 113 30 29 28 29 30 30 34 40
2 111 125 168 46 31 28 28 29 30 30 30 85
3 136 113 83 79 64 28 28 30 29 30 31 64
4 131 102 278 83 39 27 28 30 30 30 32 96
5 235 104 108 69 29 28 28 29 36 38 39 70
6 166 231 131 82 38 27 28 29 32 32 64 100
7 213 98 98 63 33 27 27 33 28 31 107 53
8 85 104 166 68 64 27 28 29 29 28 77 35
9 334 236 43 79 49 28 28 29 29 28 48 37
10 233 268 99 43 30 29 28 29 48 27 33 37
11 91 285 74 48 32 28 30 31 32 31 40 68
12 98 270 88 55 32 28 28 29 28 28 43 117
13 64 92 77 67 29 29 29 28 28 41 34 43
14 147 91 76 75 32 29 29 28 29 55 58 79
15 141 52 238 49 30 29 29 29 42 30 58 99
16 218 109 123 33 34 30 28 28 29 29 74 96
17 109 182 76 33 31 29 29 62 29 54 105 56
18 206 151 44 38 34 29 36 30 29 41 44 128
19 134 200 42 33 32 28 30 28 29 45 53 129
20 190 127 224 43 29 27 30 102 28 69 100 101
21 153 191 169 35 28 28 29 51 31 30 131 92
22 206 206 151 40 43 28 29 30 45 28 137 117
23 134 171 59 31 28 28 30 30 29 28 45 128
24 182 208 39 33 29 27 29 31 28 33 52 118
25 262 269 68 32 27 28 30 30 29 43 45 93
26 162 113 42 40 27 29 29 30 29 58 60 117
27 126 143 92 40 28 28 29 29 29 48 36 101
28 72 243 119 48 28 28 29 29 31 32 69 236
29 58 45 58 30 28 28 29 29 31 29 151 216
30 82   51 34 28 28 28 29 30 34 71 167
31 95   67   29   29 29   29   105