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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 11078000 SANTA ANA R A SANTA ANA CA


Orange County, California
Hydrologic Unit Code 18070203
Latitude  33°45'04", Longitude 117°54'27" NAD27
Drainage area 1,700  square miles
Gage datum 66.18 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 1939-10-01 -> 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
1 123 93 484 136 27 8.8 0.93 0.1 0.02 27 2.9 9.9
2 105 104 519 149 25 9.2 1.1 0.1 0.02 2.8 1.7 9.9
3 49 126 405 116 34 10 1.4 0.03 0.06 5.1 1.3 12
4 142 125 411 87 32 17 1.4 0.01 0.02 4.9 1.8 27
5 124 161 411 86 37 22 1.5 0.04 0.18 6.4 1.5 23
6 158 193 396 113 44 18 1.8 0.06 0.1 13 1.3 65
7 212 227 310 94 46 17 1.7 0.04 0.07 2.3 3.7 65
8 209 240 293 75 41 15 1.6 0.02 0.1 3.6 14 31
9 251 337 217 65 41 14 1.4 0.02 0.02 3.8 9.7 18
10 299 294 216 63 41 14 1.2 0.02 4.3 3.6 3.8 15
11 387 197 248 70 32 12 1.2 0.03 1.7 3.2 13 18
12 367 234 217 67 22 11 1.1 0.22 0.03 3.1 11 26
13 215 314 181 58 61 7.1 1 0.01 0.02 3.7 39 16
14 279 390 154 68 40 1.3 0.99 0.01 0.06 1.1 12 14
15 275 302 263 73 21 0.46 1.1 0.05 1.9 0.11 3.5 30
16 328 280 268 55 12 1.5 0.7 0.03 0.03 0.03 3.6 56
17 291 286 204 64 11 2.4 0.16 6.1 0.03 12 2.1 54
18 245 225 94 57 12 0.54 0.05 6.9 0.02 2.6 13 58
19 183 211 75 33 9.5 0.41 0.38 8.3 0.45 5.6 5.7 71
20 174 294 77 37 7.4 0.33 0.18 10 0.12 38 8.6 122
21 223 411 114 33 5.2 0.29 0.06 8.3 0.36 22 25 124
22 260 453 145 41 12 0.29 0.01 5.5 1.1 21 16 158
23 257 437 173 40 5.5 0.31 0.25 0.16 0.17 22 3.8 67
24 240 455 122 37 4.9 0.27 0.08 0.06 0.79 19 27 90
25 291 548 97 29 4.7 0.21 0.17 0.05 10 20 16 81
26 320 576 96 17 5 0.25 0.26 0.06 0.31 7.7 21 70
27 216 467 145 17 6 0.6 0.33 0.08 0.33 39 12 42
28 130 411 171 36 11 0.7 0.35 0.08 2.6 20 17 58
29 174 177 137 27 15 0.68 0.22 0.05 2.6 20 32 86
30 150   106 24 10 0.71 0.17 0.02 6.9 19 25 151
31 126   99   9.8   0.14 0.02   5.1   134