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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 11087020 SAN GABRIEL R AB WHITTIER NARROWS DAM CA


Los Angeles County, California
Hydrologic Unit Code 18070106
Latitude  34°02'03", Longitude 118°02'14" NAD27
Drainage area 442  square miles
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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 1955-10-01 -> 2019-09-30)

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
1 120 103 874 214 95 67 50 53 51 117 91 106
2 158 137 828 138 81 70 53 58 55 61 84 140
3 137 173 698 120 96 64 51 55 49 61 82 153
4 385 150 622 149 74 61 48 52 52 67 103 209
5 341 192 646 138 83 81 48 51 60 93 87 146
6 316 433 466 125 160 57 47 49 54 70 99 190
7 426 369 437 130 127 58 49 52 52 69 113 261
8 218 327 528 127 91 57 48 52 49 68 138 110
9 681 436 312 142 86 59 48 53 50 73 132 133
10 772 295 259 119 87 56 50 53 76 76 115 122
11 737 448 290 128 88 56 50 52 59 79 111 142
12 443 518 140 111 130 58 51 52 54 73 103 188
13 403 401 203 92 137 60 70 49 53 74 94 132
14 606 427 197 140 121 57 76 50 48 83 104 137
15 557 454 232 111 103 62 54 52 72 73 94 200
16 513 560 227 94 95 90 50 68 54 73 127 256
17 439 783 239 93 93 58 46 76 55 116 120 164
18 513 533 186 105 99 61 45 55 58 94 111 216
19 356 905 189 80 94 60 49 71 59 83 114 275
20 425 969 218 149 87 62 50 52 59 186 139 198
21 282 947 241 114 83 62 54 49 58 78 199 232
22 305 781 207 102 101 63 52 48 68 115 151 288
23 279 764 190 94 91 59 49 48 59 85 214 117
24 389 754 184 78 86 53 49 47 79 81 277 219
25 669 818 258 86 81 57 50 47 84 69 174 189
26 671 823 188 95 70 59 52 50 67 89 197 153
27 441 822 239 77 62 61 53 50 64 138 132 163
28 404 734 183 100 106 59 54 50 65 75 169 236
29 227 69 127 104 68 55 55 51 77 79 198 320
30 170   103 110 72 52 54 53 80 125 257 112
31 235   144   73   52 53   78   170