Warning: Javascript must be enabled to use all the features on this page!


Page Loading - Please Wait...

Click to hideNews Bulletins
  • Due to a lapse in government funding, the majority of USGS websites will not be updated except to provide important public safety information. Websites displaying real-time water data will be updated with limited support. For more information please see www.doi.gov/shutdown.
  • Explore the NEW USGS National Water Dashboard interactive map to access real-time water data from over 13,500 stations nationwide.

USGS Daily Statistics for California

Click to hide state-specific text

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
Output formats
HTML table of all data
Tab-separated data
Reselect output format

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 -> 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 13 9.8 155 41 25 13 3 1.3 1.9 2.2 2.3 4.5
2 13 11 252 37 25 13 2.7 1.4 1.9 3.7 2.8 3.2
3 11 16 167 39 22 13 2.9 2.1 1.9 2 4.3 2.7
4 8.6 11 142 52 21 13 2.8 2.9 1.8 1.3 5.2 2.2
5 10 13 132 56 26 13 2.7 2.5 1.7 3.6 5.2 4.3
6 9.5 28 98 40 29 11 2.8 2.3 1.6 1.8 5.1 10
7 15 34 90 36 25 9.4 3.7 1.9 1.7 1.5 5.4 6.3
8 26 50 70 30 17 9.4 3.1 1.9 2.2 1.2 5.6 2.8
9 73 68 55 27 17 8.5 2.5 1.8 1.9 1.2 5.5 2.3
10 121 139 49 26 16 9.3 2 1.7 1.9 1.2 3.5 2.4
11 103 73 57 25 16 7.1 1.6 2 1.8 1.1 3.9 2.8
12 47 90 59 30 17 6.6 1.2 2.1 1.9 1.1 3.7 1.9
13 35 76 66 26 23 6.3 1.7 2 2 1.1 3.4 3.2
14 44 65 51 24 23 6.5 2.1 1.9 1.7 1.2 3.3 1.8
15 42 60 58 24 22 7.9 2.3 1.8 4.3 1.1 2.9 2.6
16 42 51 60 26 22 7.4 2.4 2 8.4 1.1 2.6 2.5
17 45 80 41 22 21 5.5 2 2.5 2.9 1.2 2.5 1.7
18 61 82 46 22 21 5.2 1.8 2.1 2.1 1.3 2.5 1.4
19 46 136 44 21 21 4.9 1.9 2.4 2 1.4 3.1 3.1
20 31 112 33 26 20 4.9 2 2.5 2 2.4 2.8 6.1
21 30 126 43 27 20 4.7 2 2.6 2.1 2.1 2.6 0.79
22 28 110 43 31 18 4.5 2.1 2.4 2.1 3.3 4.4 13
23 32 134 65 27 19 4.4 2.1 2.4 2.1 5 32 13
24 45 168 62 26 22 4.6 1.9 2.4 2.2 1.8 26 6.7
25 150 209 50 24 18 4.5 1.8 2.4 2.3 1.6 7.2 4.2
26 85 136 44 22 19 4.5 1.7 2.1 2.1 1.5 4.4 2.2
27 49 101 42 19 17 4 1.5 2 2.2 1.7 4.3 3.9
28 37 96 39 19 16 3.8 1.7 1.8 2.1 1.8 4.2 3.9
29 33 46 32 18 16 3.9 1.8 1.7 2 1.6 3.5 13
30 26   34 23 16 3.8 1.6 1.8 1.9 2.4 7.8 15
31 19   36   15   1.2 1.9   3.7   17