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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 70 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 1939-10-01 -> 2021-09-30)

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
1 125 91 475 126 27 9.1 0.96 0.1 0.02 28 3 10
2 109 107 506 140 25 9.5 1.1 0.1 0.02 2.9 1.8 10
3 51 130 397 111 35 10 1.5 0.03 0.06 5.2 1.3 12
4 147 127 417 88 30 17 1.4 0.01 0.02 5 1.9 28
5 125 96 417 87 38 23 1.6 0.04 0.19 6.6 1.5 24
6 164 120 401 116 46 18 1.9 0.06 0.11 13 1.3 67
7 220 161 313 97 48 17 1.8 0.04 0.07 2.3 3.8 67
8 217 171 296 78 43 16 1.6 0.02 0.11 3.7 11 32
9 261 312 217 67 42 15 1.5 0.02 0. 3.9 9.5 19
10 305 302 211 66 43 14 1.2 0.02 4.5 3.8 4 16
11 398 201 237 72 34 12 1.2 0.03 1.7 3.3 14 16
12 380 239 216 70 23 11 1.1 0.22 0.03 3.2 12 25
13 222 320 182 60 63 7.4 1 0.01 0.02 3.8 40 17
14 283 399 146 69 42 1.3 1 0.01 0.06 1.1 12 11
15 266 307 193 75 22 0.47 1.1 0.05 2 0.09 3.5 31
16 289 287 231 57 13 1.5 0.71 0.03 0.03 0.03 3.7 58
17 262 294 183 67 12 2.4 0.17 6.2 0.03 12 2.2 56
18 218 231 93 59 12 0.55 0.05 7 0.02 2.7 14 61
19 180 216 73 35 9.8 0.42 0.39 8.5 0.47 5.9 5.9 74
20 179 282 75 38 7.6 0.34 0.19 8 0.12 39 9 126
21 231 358 92 35 5.3 0.3 0.06 7.2 0.37 23 26 129
22 267 414 85 42 13 0.3 0.01 5.6 1.2 21 17 163
23 267 443 147 41 5.6 0.32 0.25 0.17 0.18 23 3.9 67
24 249 464 119 39 5 0.28 0.08 0.06 0.82 20 28 75
25 302 545 96 30 4.8 0.22 0.17 0.05 11 20 17 70
26 332 591 96 17 5.1 0.26 0.27 0.06 0.32 8 22 60
27 224 471 143 17 6.2 0.61 0.34 0.09 0.34 41 12 41
28 135 408 169 37 12 0.72 0.36 0.08 2.7 20 17 57
29 181 186 125 28 16 0.7 0.23 0.06 2.7 20 33 78
30 156   80 25 11 0.72 0.17 0.02 7.2 20 26 135
31 131   73   10   0.14 0.02   5.3   137