3/12/2013 Temperature and Release Summary for Shasta and Trinity - February 2013

(Updated twice a week November through April)

Sacramento River Water Temperatures in Degrees F

Day Collected from CDEC (California Data Exchange Center) in CFS

Cntrl Pnt Control

TCD SHD minus 4/16 to 5/31 Point Shasta Spring Crk 

Wt. TCD 10/1 to 2/28 6/1 to 9/30 Generation Powerplant 

Avg. (Diff) Shd Spp Kwk Bsf Jlf Bnd Rdb Lws Ccr Igo El 815 Release 

Jan 49.2 47.9 nd 47.7 46.6 46.1 46.1 45.9 42.4 47.7 43.5 3,593 458 

Feb

1 48.9 (1.5) 47.4 nd 47.2 46.9 46.8 46.9 47.3 42.2 47.5 43.3 4,140 154 

2 49.0 (1.2) 47.8 nd 47.6 47.4 47.3 47.4 47.5 42.6 47.7 43.4 4,377 80 3 49.0 (1.3) 47.7 nd 48.0 47.8 47.5 47.5 47.7 42.5 48.4 43.5 3,455 80 4 48.8 (2.6) 46.2 nd 48.0 48.4 48.3 48.3 48.4 42.9 48.4 43.9 4,491 80 5 48.6 (0.8) 47.8 nd 47.9 48.4 48.3 48.4 48.5 43.1 48.4 44.0 3,151 456 6 48.6 (1.8) 46.8 nd 47.7 48.0 47.9 48.0 48.5 43.0 48.1 43.7 4,354 80 7 48.3 (1.0) 47.3 nd 47.7 48.4 48.3 48.4 48.3 43.3 48.2 44.2 4,052 80 8 48.4 (0.9) 47.5 nd 47.9 47.9 47.9 48.0 48.4 43.3 48.3 44.0 3,806 80 9 48.6 (0.8) 47.8 nd 47.6 47.5 47.2 47.3 47.5 42.6 48.0 43.6 3,810 80 

10 48.5 (1.2) 47.3 nd 47.4 47.6 47.3 47.3 47.4 43.1 48.0 43.8 3,389 80 11 48.5 (1.3) 47.2 nd 47.6 47.7 47.6 47.7 47.9 43.3 48.1 43.8 3,725 80 12 48.4 (2.2) 46.2 nd 47.7 48.0 47.9 47.9 48.1 43.5 48.4 44.1 3,593 80 13 48.4 (0.9) 47.5 nd 47.8 48.4 48.3 48.3 48.6 43.9 48.6 44.6 3,596 80 14 48.5 (0.8) 47.7 nd 48.0 49.3 49.3 49.6 49.7 44.4 48.9 45.1 4,139 80 15 48.6 (0.8) 47.8 nd 48.0 49.3 49.3 49.8 50.4 44.4 48.9 45.0 4,071 80 16 48.2 (0.7) 47.5 nd 48.0 49.0 49.0 49.5 50.2 44.6 48.7 44.7 3,343 80 17 48.2 (0.7) 47.5 nd 48.2 48.8 48.8 49.2 49.7 44.6 48.6 44.7 2,808 80 18 48.3 (0.9) 47.4 nd 47.9 48.2 48.0 48.5 49.0 44.3 48.1 44.3 3,372 349 19 47.9 (0.9) 47.0 nd 47.4 48.0 47.6 48.0 48.1 44.4 47.7 44.6 3,319 80 20 48.0 (0.8) 47.2 nd 47.4 47.3 46.9 47.3 47.8 44.6 47.8 44.4 3,437 80 

21 48 1 47 3 47 2 47 7 47 3 47 7 47 9 44 6 47 8 44 6 3 480 80 

Mean Daily Relea

21 48.1 (0.8) 47.3 nd 47.2 47.7 47.3 47.7 47.9 44.6 47.8 44.6 3,480 80 

22 48.1 (0.8) 47.3 nd 47.2 48.1 47.9 48.3 48.6 45.2 47.9 45.2 3,203 80 23 48.1 (0.9) 47.2 nd 47.5 48.5 48.4 48.9 49.2 45.1 48.0 45.2 3,535 80 24 48.1 (0.8) 47.3 nd 47.6 48.0 47.8 48.2 48.8 44.8 48.0 44.9 3,385 80 25 48.1 (0.9) 47.2 nd 47.4 48.7 48.5 48.9 49.2 45.0 48.3 45.3 3,835 83 26 48.2 (0.9) 47.3 nd 47.7 48.3 48.3 48.9 49.5 44.9 48.1 45.0 3,036 80 27 48.0 (1.3) 46.7 nd 47.6 48.6 48.4 48.8 49.3 45.3 48.4 45.5 3,804 80 28 47.7 (0.7) 47.0 nd 47.9 50.0 50.0 50.5 50.7 46.7 48.9 46.6 3,324 80 

0.00.00.0

Avg 48.4 47.3 ##### 47.7 48.2 48.1 48.3 48.7 44.0 48.2 44.5 3,644 106 Tot cfs 102,030 2,962 Tot af 202,377 5,875 

# = Station out of service ^ - estimated (7 hours or less available) ? = Avg. includes estimated data! = 17 hours or less of readings & = 18 to 23 hours of reading ND = No hourly readings or incorrect 

Control Point: Balls Ferry 4/16/2012 to 5/31/2012; Jellys Ferry 6/1/2012 to 9/30/2012; Balls Ferry 10/01/2012 to 2/28/2013Note: On 12/7/2012 at the temperature point for the Spring Creek Power Plant (SPP), the bottom section of metal pipe was torn off the wall. Sonde Note: There are times when the SHD probe apprears to be out of the water, so it measures air temperature. USBR Northern California Area Office i

V:\~WATER\_res_ops\Tempmodel\~sactemp\2013TempFiles\[02_2013 Monthly Summary.xls]Sac Riv Temps