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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 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 44 55 227 117 29 28 27 28 28 27 33 40
2 114 129 171 45 30 27 27 28 28 28 27 82
3 138 116 83 80 66 27 27 28 27 28 29 63
4 120 105 287 84 27 27 27 28 29 27 31 98
5 184 107 108 70 28 27 27 28 35 36 39 71
6 170 242 135 42 37 27 27 28 31 31 64 102
7 222 100 100 52 32 26 26 32 26 29 108 53
8 87 107 171 66 66 26 27 28 27 27 61 34
9 282 247 42 62 49 27 27 28 27 26 45 35
10 170 280 67 33 29 28 27 28 47 26 31 36
11 91 298 63 47 31 27 29 30 30 30 39 42
12 99 282 86 55 31 27 28 28 27 27 42 119
13 63 95 55 67 28 28 28 27 26 40 33 42
14 120 93 44 76 30 28 28 27 27 55 58 37
15 138 52 194 48 28 28 28 28 41 29 58 101
16 209 112 111 32 33 30 28 27 27 28 75 98
17 108 189 73 31 29 28 28 63 27 54 108 56
18 213 157 41 37 31 27 36 29 27 41 43 132
19 137 209 39 31 31 27 30 27 27 45 52 133
20 196 131 234 42 27 26 29 28 26 70 103 103
21 157 198 145 34 27 27 29 28 29 29 135 94
22 214 214 120 36 43 27 28 28 44 28 142 121
23 135 175 51 29 27 27 28 28 27 26 45 86
24 188 110 35 31 27 27 28 28 27 32 52 107
25 270 170 66 30 26 27 28 28 27 34 44 94
26 167 111 40 39 26 28 28 29 27 59 60 111
27 129 139 93 39 26 27 28 28 26 47 35 100
28 62 245 103 48 26 27 28 28 29 32 70 218
29 41 45 41 29 27 27 28 27 29 28 156 213
30 79   42 33 27 27 28 27 27 33 72 56
31 96   66   27   28 28   27   82