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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 11097000 BIG TUJUNGA C BL HANSEN DAM CA


Los Angeles County, California
Hydrologic Unit Code 18070105
Latitude  34°15'13", Longitude 118°23'17" NAD27
Drainage area 153  square miles
Gage datum 945.75 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 1947-10-01 -> 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 13 9.9 157 42 25 13 3 1.3 2 2.2 2.3 4.6
2 13 11 255 38 25 13 2.7 1.4 1.9 3.8 2.9 3.2
3 11 16 169 40 22 13 3 2.2 2 2 4.3 2.7
4 8.7 11 144 52 21 13 2.8 3 1.9 1.3 5.2 2.2
5 10 13 134 56 26 14 2.7 2.5 1.7 3.6 5.3 4.4
6 9.6 28 99 41 30 11 2.8 2.3 1.6 1.8 5.2 10
7 16 34 92 36 26 9.5 3.8 1.9 1.7 1.5 5.5 6.4
8 26 51 71 31 17 9.5 3.2 1.9 2.2 1.2 5.7 2.8
9 74 69 56 27 17 8.6 2.6 1.9 1.9 1.2 5.6 2.3
10 123 141 50 26 17 9.4 2.1 1.8 1.9 1.2 3.5 2.4
11 104 74 58 25 17 7.2 1.6 2 1.9 1.1 4 2.8
12 48 91 60 30 17 6.7 1.2 2.2 1.9 1.1 3.8 1.9
13 35 77 67 26 23 6.4 1.8 2 2 1.1 3.4 3.2
14 45 66 52 24 23 6.6 2.1 1.9 1.7 1.2 3.3 1.8
15 43 61 59 24 23 8.1 2.4 1.8 4.3 1.1 2.9 2.7
16 42 51 61 26 22 7.5 2.5 2 8.5 1.1 2.6 2.5
17 45 81 42 22 22 5.6 2 2.6 3 1.2 2.5 1.7
18 62 83 46 22 22 5.3 1.9 2.1 2.2 1.3 2.5 1.4
19 46 138 45 21 21 5 1.9 2.4 2 1.4 3.1 3.1
20 31 114 33 27 20 4.9 2.1 2.6 2 2.5 2.8 6.2
21 31 128 43 28 20 4.7 2 2.7 2.1 2.1 2.6 0.8
22 29 112 44 31 18 4.5 2.1 2.5 2.1 3.4 4.4 14
23 32 136 66 27 19 4.4 2.1 2.5 2.1 5.1 33 13
24 46 170 63 26 22 4.7 1.9 2.5 2.2 1.8 26 6.7
25 152 212 51 25 18 4.5 1.8 2.4 2.3 1.6 7.3 4.2
26 86 138 44 22 19 4.6 1.7 2.2 2.1 1.6 4.4 2.2
27 50 102 43 19 17 4 1.5 2 2.2 1.7 4.4 4
28 38 98 39 20 17 3.8 1.7 1.8 2.1 1.8 4.3 4
29 33 46 32 19 16 4 1.8 1.7 2 1.6 3.5 13
30 26   34 23 16 3.8 1.7 1.8 1.9 2.5 7.9 15
31 19   37   16   1.3 2   3.8   18