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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 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 10 159 42 25 13 3 1.3 2 2.2 2.3 4.6
2 13 11 259 37 26 13 2.7 1.4 1.9 3.8 2.9 3.3
3 11 17 171 38 23 13 3 2.2 2 2 4.3 2.7
4 8.8 11 145 51 21 13 2.8 3 1.9 1.3 5.3 2.3
5 11 14 135 55 27 14 2.7 2.5 1.7 3.6 5.3 4.4
6 9.8 28 100 40 30 11 2.8 2.3 1.6 1.8 5.2 10
7 16 33 92 36 26 9.5 3.8 1.9 1.7 1.5 5.5 6.4
8 27 50 71 30 18 9.5 3.2 1.9 2.2 1.2 5.7 2.9
9 75 69 56 26 17 8.6 2.6 1.9 1.9 1.2 5.6 2.3
10 125 142 50 26 17 9.4 2.1 1.8 1.9 1.2 3.5 2.4
11 105 74 58 25 17 7.2 1.6 2 1.9 1.1 4 2.9
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 3.3
14 45 66 51 24 24 6.6 2.1 1.9 1.7 1.2 3.3 1.8
15 43 60 56 24 23 8.1 2.4 1.8 4.3 1.1 2.9 2.7
16 43 51 59 26 22 7.5 2.5 2 8.5 1.1 2.6 2.6
17 46 81 40 22 22 5.6 2 2.6 3 1.2 2.5 1.7
18 63 83 45 22 22 5.3 1.9 2.1 2.2 1.3 2.5 1.4
19 47 139 44 21 21 5 1.9 2.4 2 1.4 3.2 3.1
20 31 114 32 26 21 4.9 2.1 2.6 2 2.5 2.8 6.2
21 31 128 43 28 21 4.7 2 2.7 2.1 2.1 2.7 0.7
22 29 112 44 31 19 4.5 2.1 2.5 2.1 3.4 4.5 14
23 32 137 67 27 19 4.4 2.1 2.5 2.1 5.1 33 13
24 46 172 63 26 23 4.7 1.9 2.5 2.2 1.8 26 6.8
25 154 214 51 24 19 4.5 1.8 2.4 2.3 1.7 7.4 4.3
26 87 139 44 21 19 4.6 1.7 2.2 2.1 1.6 4.5 2.2
27 51 103 41 18 17 4 1.5 2 2.2 1.7 4.4 4
28 38 98 38 19 17 3.8 1.7 1.8 2.1 1.8 4.3 4
29 34 48 33 18 17 4 1.8 1.7 2 1.6 3.6 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