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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 11101250 RIO HONDO AB WHITTIER NARROWS DAM CA


Los Angeles County, California
Hydrologic Unit Code 18070105
Latitude  34°03'30", Longitude 118°04'15" NAD27
Drainage area 91.2  square miles
Gage datum 219.95 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 1955-10-01 -> 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 15 37 266 76 27 17 13 24 6.2 21 26 12
2 46 66 230 23 29 24 12 23 5.6 8 18 40
3 41 61 132 31 37 31 11 18 5.7 4.9 14 37
4 95 55 157 41 27 31 9.7 15 7.2 10 18 55
5 88 45 168 49 28 42 8.5 12 8.3 27 21 40
6 88 124 132 55 53 33 8.9 10 7.1 8.3 35 61
7 131 85 72 44 22 32 9 10 6.1 8.1 36 69
8 93 112 119 30 31 23 11 9.1 6.8 7.6 51 20
9 186 139 51 29 37 19 15 6.7 6.3 7.3 40 38
10 222 121 82 18 25 20 14 6 22 7 35 26
11 139 154 100 46 27 23 18 5.3 20 18 36 48
12 93 163 68 35 41 28 19 7.1 12 9 30 51
13 94 119 99 35 39 28 15 4.2 13 17 14 21
14 102 137 68 57 29 28 16 3.7 14 19 27 28
15 79 124 131 50 27 32 24 8.3 25 12 19 51
16 95 151 99 43 23 43 25 3.1 14 15 28 55
17 88 144 75 46 20 31 26 13 17 37 40 33
18 90 132 65 59 22 33 30 2.9 25 18 22 79
19 57 238 84 32 28 32 27 13 19 18 31 82
20 102 194 96 59 27 30 23 18 20 56 50 60
21 65 181 87 40 21 28 22 15 15 17 56 68
22 95 144 79 20 23 29 23 3.7 31 20 41 73
23 59 227 51 21 18 27 20 3.5 14 27 21 38
24 111 171 37 20 16 26 18 5.3 12 18 62 59
25 188 227 83 24 14 25 17 5.9 20 19 37 59
26 124 153 49 37 13 23 16 5.8 19 29 43 43
27 100 175 48 35 13 22 15 5.9 11 30 24 42
28 72 198 51 36 26 20 16 6 12 18 41 78
29 61 69 20 41 13 18 15 6.1 14 24 54 102
30 49   17 32 15 16 20 7.5 21 43 58 28
31 79   30   17   27 6.2   24   37