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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 11109550 PIRU C AB FRENCHMANS FLAT CA


Los Angeles County, California
Hydrologic Unit Code 18070102
Latitude  34°37'51", Longitude 118°44'51" NAD27
Drainage area 308  square miles
Gage datum 2,140 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 1976-10-01 -> 2023-09-30)

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 30 61 159 98 8.5 34 22 14 18 9.7 8.6 21
2 48 104 132 83 8.4 34 22 16 18 8.7 11 21
3 38 94 115 71 6.5 34 21 20 18 7.7 8.2 21
4 30 64 203 172 6.5 34 21 20 20 7.1 9.5 22
5 41 60 102 111 6.6 38 21 20 22 5.6 12 23
6 55 56 120 74 6.6 54 21 21 22 6 15 27
7 34 51 86 77 6.7 66 21 21 21 7.2 17 46
8 75 48 84 74 9.1 79 20 21 20 7.7 19 51
9 372 49 79 65 9.1 85 21 21 20 7.2 20 24
10 467 90 80 60 9.8 87 21 21 20 7.2 21 16
11 103 106 100 57 12 88 21 21 18 7.2 21 14
12 50 106 104 56 15 69 20 21 18 7.2 22 15
13 51 107 82 54 15 36 20 21 18 7.2 22 22
14 40 106 64 52 15 36 20 21 18 7.2 23 23
15 59 92 74 59 21 36 20 21 18 7.3 23 15
16 43 62 82 59 41 36 20 23 18 7.3 23 13
17 72 94 72 46 64 36 20 22 18 7.3 22 15
18 101 123 72 44 85 35 20 22 17 7.8 22 21
19 69 66 72 42 102 34 17 22 17 7.8 22 27
20 70 62 73 39 102 35 16 21 17 7.9 24 27
21 60 290 79 37 102 35 16 21 17 7.9 24 29
22 57 199 73 36 101 30 16 21 17 7.9 25 45
23 75 177 71 35 55 24 15 21 17 7.3 25 38
24 64 151 70 34 29 23 15 21 17 7.3 25 26
25 64 141 75 33 29 23 15 20 17 7.3 24 26
26 66 107 74 31 29 23 15 18 17 7.3 26 24
27 194 111 72 32 29 24 15 18 17 7.8 29 20
28 151 152 75 32 30 22 15 18 17 8 27 22
29 76 54 92 31 31 20 14 17 17 8.1 23 30
30 68   93 34 31 21 14 18 16 7.6 21 32
31 67   94   31   14 18   7.6   30