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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 11042000 SAN LUIS REY R A OCEANSIDE CA


San Diego County, California
Hydrologic Unit Code 18070303
Latitude  33°13'05", Longitude 117°21'34" NAD27
Drainage area 557  square miles
Gage datum 8.90 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 1929-10-01 -> 2025-09-30)

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 27 54 184 76 38 17 9.1 4.5 4.2 4.7 4.4 15
2 25 48 187 76 35 17 9.1 4.5 4.1 4.3 4.2 9.2
3 25 49 279 62 33 16 9 4.5 3.9 3 3.9 9.7
4 37 50 128 60 33 16 8.7 4.4 3.8 2.5 3.8 10
5 55 49 169 59 34 16 8.7 4.3 3.7 2.4 3.7 10
6 64 63 188 57 34 16 8.6 4.3 3.7 2.5 3.8 13
7 52 143 107 57 32 15 8.3 4.3 3.7 2.6 3.9 30
8 65 72 99 59 31 14 8.1 4.2 3.6 2.7 4.3 11
9 54 84 94 50 30 14 7.8 4.2 3.5 2.5 4.7 10
10 163 70 92 68 30 14 7.6 4.3 2.4 2.6 5.1 11
11 178 68 133 88 28 14 7.4 4.2 2.2 2.6 5.9 12
12 94 58 114 58 26 13 7.4 4.2 2.2 2.9 11 13
13 54 62 104 53 28 13 7 4.3 2.1 2.8 12 12
14 41 136 100 50 27 13 6 4.2 2.1 2.7 8.8 11
15 59 182 104 49 24 12 4.6 4.2 2.1 2.6 7.1 11
16 65 132 146 49 23 12 4.1 4.3 2.1 2.7 6.6 12
17 83 123 111 46 22 12 4.4 5.5 2.1 2.9 6.2 22
18 47 156 134 47 22 11 5.5 4.7 2.1 3 6.9 27
19 42 104 111 45 23 11 5.2 4.7 2 3 6.3 31
20 35 128 87 45 22 11 4.9 4.8 2.1 4.4 7 23
21 45 177 101 47 21 11 3.6 5.6 2.1 6.1 9.1 20
22 52 114 102 44 21 11 3.5 5.4 2.2 5.9 10 70
23 54 120 91 41 20 10 3.9 5 2.2 4.7 11 51
24 47 99 97 39 20 10 4.5 4.9 2.4 4.3 7.5 36
25 44 98 80 38 20 9.8 4.5 4.7 2.5 3.9 17 45
26 52 112 74 38 20 9.6 4.6 4.6 2.5 3.7 10 30
27 43 79 94 38 19 9.5 4.5 4.6 2.5 7.2 7.7 25
28 43 114 112 37 19 9.4 4.5 4.4 2.4 9.6 7.9 25
29 105 85 87 39 18 9.4 4.4 4.4 2.4 8.6 9.3 27
30 66   73 40 18 9.3 4.5 4.2 2.4 6.2 16 34
31 65   67   17   4.5 4.2   5.1   36