9/29/2011 Temperature and Release Summary for Shasta and Trinity - August 2011

(Updated twice a week November through April)

Sacramento River Water Temperatures in Degrees F

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

Control

TCD SHD minus Point Shasta Spring Crk 

Wt. TCD 6/1 to 8/31 Generation Powerplant 

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

Jul 49.4 48.7 55.8 50.0 53.6 55.0 55.8 57.2 49.7 51.4 57.8 10,436 1,573 

Aug

1 50.4 (0.9) 49.5 56.6 50.7 54.3 55.4 56.4 57.9 51.6 52.2 58.2 10,337 1,264 

2 50.4 (0.7) ? 49.7 56.4 50.8 54.1 55.3 56.2 57.7 52.0 52.2 57.7 9,572 1,257 3 50.4 (0.7) ? 49.7 56.4 50.8 54.1 55.2 56.0 57.6 51.6 52.3 57.4 10,736 1,234 4 50.5 (0.7) ? 49.8 57.4 50.8 54.1 55.3 56.0 57.6 51.8 52.4 57.2 10,707 1,200 5 50.7 (0.6) ? 50.1 56.8 50.8 54.0 55.2 56.0 57.6 51.9 52.4 57.3 10,270 1,282 6 50.6 (0.9) ? 49.7 57.9 51.0 54.2 55.4 56.0 57.5 51.9 52.6 57.6 10,551 1,199 7 50.7 (0.8) ? 49.9 57.7 51.0 54.3 55.5 56.2 57.7 52.1 52.6 57.5 10,259 1,277 8 50.8 (0.8) ? 50.0 ND 51.0 54.3 55.5 56.2 57.8 52.0 52.6 57.5 10,261 1,276 

9 50.8 (0.7) ? 50.1 ND 51.4 54.4 55.6 56.3 57.8 52.0 52.8 57.6 10,391 1,255 

10 50.9 (0.8) ? 50.1 ND 51.4 54.6 55.8 56.5 57.9 51.9 53.0 57.6 10,491 1,269 11 50.6 (0.6) ? 50.0 ND 51.4 54.5 55.8 56.5 58.1 51.6 52.9 57.7 10,098 1,338 12 50.4 (0.9) ? 49.5 ND 51.1 54.5 55.8 56.6 58.2 51.6 52.8 57.8 10,481 1,386 13 50.4 (0.6) ? 49.8 ND 51.1 54.3 55.5 56.3 58.0 51.5 52.6 57.6 9,968 1,344 14 50.4 (0.8) ? 49.6 ND 51.0 54.3 55.6 56.3 57.9 51.5 52.6 57.5 9,756 1,342 15 50.5 (0.9) ? 49.6 ND 51.0 54.1 55.3 56.0 57.6 51.5 52.4 57.2 10,068 1,346 16 50.5 (0.7) ? 49.8 ND 51.0 54.0 55.0 55.7 57.1 51.7 52.5 57.1 9,921 1,270 17 50.6 (0.8) ? 49.8 58.3 51.0 54.0 55.2 55.9 57.2 51.6 52.4 57.4 9,780 1,133 

18 50.7 (1.0) ? 49.7 58.7 51.1 54.2 55.3 56.0 57.5 51.6 52.6 57.9 10,287 999 19 50.7 (1.1) ? 49.6 58.0 51.2 54.3 55.5 56.3 58.0 51.6 52.7 58.1 9,539 1,239 20 50.8 (0.9) 49.9 58.6 51.1 54.5 55.7 56.4 58.1 51.6 52.8 57.8 9,992 1,009 21 50.8 (1.0) ? 49.8 59.1 51.1 54.2 55.3 55.9 57.6 51.5 52.6 57.0 10,172 924 22 50.8 (1.0) ? 49.8 57.8 51.2 54.0 55.1 55.8 57.4 51.5 52.6 56.9 9,662 1,171 23 50.9 (0.9) ? 50.0 58.0 51.3 54.2 55.2 55.9 57.4 51.5 52.8 57.2 9,830 1,297 24 51.0 (1.1) ? 49.9 57.9 51.5 54.1 55.3 56.0 57.6 51.2 52.8 56.8 9,750 1,259 25 51.0 (1.0) ? 50.0 58.2 51.5 54.2 55.4 56.0 57.7 51.2 52.9 57.2 9,876 1,072 26 51.1 (1.0) ? 50.1 ND 51.4 54.3 55.4 56.1 57.8 51.4 52.9 57.2 10,014 1,219 

27 51.2 (1.0) ? 50.2 ND 51.7 54.5 55.6 56.3 58.0 51.4 53.1 57.5 9,880 1,193 28 51.2 (1.0) ? 50.2 ND 51.6 54.4 55.6 56.3 58.0 50.5 53.1 57.3 9,758 1,232 29 51.3 (1.1) ? 50.2 ND 51.6 54.5 55.6 56.2 57.8 50.4 53.0 57.5 9,838 860 30 51.4 (1.0) ? 50.4 ND 51.6 54.3 55.5 56.2 57.9 49.2 53.0 57.5 10,073 1,225 31 51.5 (1.2) ? 50.3 56.9 51.9 54.5 55.7 56.3 57.8 49.0 53.2 57.4 9,534 1,220 

Avg 50.8 49.9 57.7 51.2 54.3 55.4 56.2 57.7 51.4 52.7 57.5 10,060 1,213 Tot cfs 311,852 37,591 Tot af 618,558 74,562 

# = 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 3/1/2011 to 5/31/2011; Jelly's Ferry 6/1/2011 to 8/31/2011 9/29/2011 Added Jul Monthly AvNOTE: On 7/19/2011 the probe for SHD was extended farther out into the river so at low flows

 it should no longer be exposed to the air. 8/2/2011 the extended pipe floated away.  Some hourly readings for SHD are questionable again and are being estimated.On 8/8/2011 the SPP Temp Probe was removed from the water to extend the pipe. 0n 8/16/2011 the SPP Temp Probe was reinstalled until an outage is approved. 0n 8/26/2011 the SPP Temp Probe was removed from water to extend the pipe. 0n 8/30/2011 the SPP Temp Probe was reinstalled in the water after completion of pipe extension.

Mean Daily Releas