Report Generated 05/14/2024 at 0749

Page Description

2 - Mean Daily Water Temperature, Release Flow Rates and Air Temperatures with Monthly Averages

3 - Sacramento River Mean Daily Water Temperature Plot

4 - Trinity River Mean Daily Water Temperature Plot

5 - Shasta Lake Isothermobaths & Cold Water Pool Statistics

14 - Trinity Lake Isothermobaths & Cold Water Pool Statistics

23 - Whiskeytown Lake Isothermobaths & Cold Water Pool Statistics

x - TCD Configuration (External Link)

All Data in this Report is Preliminary and Subject to Change

Northern CVP Water Temperature Report

May - 2024
Shasta 

Generation 

Spring 

Creek P.P.

Keswick 

Total BSF RDB

Apr 7319 76 7221 58.4 59.9

05/01 53.5 52.2 48.1 53.0 53.4 54.0 55.6 56.8 57.9 52.4 # 48.1 # 5956 44 6045 67.5 62.4 64.6

05/02 52.9 ? 52.4 48.1 53.8 54.0 54.7 56.2 57.4 58.5 52.4 # 48.5 # 6282 44 6107 65.0 60.4 64.8

05/03 53.3 ? 52.3 48.2 53.7 54.3 55.2 56.9 57.9 ? 59.1 53.0 # 48.6 # 6069 44 6122 67.5 61.8 65.2

05/04 52.3 50.6 48.1 53.3 53.2 53.5 55.0 56.7 58.1 51.7 # 48.1 # 6058 44 6203 57.5 52.1 53.4

05/05 52.3 51.2 48.1 52.6 53.2 53.8 54.0 53.9 54.7 51.4 # 47.6 # 5539 44 6104 53.5 51.0 52.4

05/06 52.4 ? 51.5 48.2 52.2 52.6 53.1 54.7 55.7 56.8 51.7 # 47.4 # 5538 44 5939 59.0 56.3 57.8

05/07 54.6 51.9 48.3 52.3 52.6 52.9 54.5 55.6 56.9 52.5 # 48.0 # 8521 44 10944 62.0 58.5 61.1

05/08 54.5 52.7 48.4 53.1 53.2 53.4 54.4 55.2 56.3 52.8 # 48.4 # 10748 44 10991 68.5 65.3 66.7

05/09 54.4 53.0 48.4 54.1 54.4 54.8 ? 56.1 56.7 57.5 ? 53.6 # 48.9 # 11415 44 11009 75.5 70.0 70.0

05/10 54.7 53.3 49.9 54.3 54.7 ? 55.2 56.9 57.9 59.2 54.1 # 49.5 # 11643 105 10848 86.0 70.7 73.2

05/11 54.2 52.7 50.5 54.4 54.9 55.5 57.5 58.6 60.0 54.4 # 49.6 # 10419 210 9485 87.5 70.9 73.6

05/12 53.3 51.6 48.8 53.9 54.5 55.3 57.7 59.3 61.1 54.7 # 49.8 # 8774 44 8351 73.5 71.3 72.7

05/13 52.7 50.7 48.6 ? 53.9 54.7 55.7 58.4 60.2 61.9 54.8 # 50.0 # 7832 44 7174 76.5 73.2 74.0

05/14

05/15

05/16

05/17

05/18

05/19

05/20

05/21

05/22

05/23

05/24

05/25

05/26

05/27

05/28

05/29

05/30

05/31

May 8061 61 8102 69.2 63.4 65.3

104794 799 105322

Legend Notes 207855 1585 208902

? = 1-9 hours of data missing (Average includes estimations) 1 Temperatures are weighted averages based on individual penstock flow and temperature

! = 10 or more hours of data missing (Average not calculated) Highlighted cells in the TCD column indicate a TCD change was made on that day

# = Station out of service 2 Current Clear Creek River control point (see page 3 for more details)

↑ = Record high air temperature

↓ = Record low air temperature

 = Monthly Averages

53.5 52.0 48.6 53.8 56.0

D

A

T

E

51.7 50.5

CCR2 TCD SAC 1 SHD SPP1 KWK

48.0 51.4 51.8 52.4 53.9 55.0

Mean Daily Air 

Temperatures (°F)

RDD

62.2

Total CFS

-

Mean Daily 

Release (CFS)

NFH

50.7

Mean Daily Water Temperatures (°F)

51.2

BND IGO

53.4

BSF

54.4 57.1

Total AF

56.0 52.0

RDB

58.3 53.0

LWS

- 48.7

DGC

49.9

2
Code Body of Water Location1 CDEC Link River Point Temp. (°F) Begin Date End Date

TCD N/A Shasta Power Plant N/A Sacramento CCR 53.5 05/14/2023 TBD

SHD Sacramento River 0.3 miles downstream of Shasta Power Plant Click Here

SPP N/A Spring Creek Power Plant N/A

KWK Sacramento River 0.8 miles downstream of Keswick Dam Click Here

SAC Sacramento River 4.8 miles downstream of Keswick Dam Click Here

CCR Sacramento River 9.7 miles downstream of Keswick Dam Click Here

BSF Sacramento River 25 miles downstream of Keswick Dam Click Here

JLF Sacramento River 34 miles downstream of Keswick Dam Click Here

BND Sacramento River 41 miles downstream of Keswick Dam Click Here Notes

RDB Sacramento River 58 miles downstream of Keswick Dam Click Here

IGO Clear Creek 7.3 miles downstream of Whiskeytown Dam Click Here 1 Distances are approximate

Station Details Water Right Temperature Control Points

40

46

52

58

64

70

76

82

88

94

100

40

42

44

46

48

50

52

54

56

58

60

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

Air Temperature (°F)

Water Temperature (°F)

Sacramento River Mean Daily Temperatures

Redding Air (Observed and Forecasted) TCD KWK SAC CCR BSF

3
Code Body of Water Location1 CDEC Link River Point Temp. (°F) Begin Date End Date

LWS Trinity River 1.1 miles downstream of Lewiston Dam Click Here

DGC Trinity River 19 miles downstream of Lewiston Dam Click Here

NFH Trinity River 38 miles downstream of Lewiston Dam Click Here

 Notes

1 Distances are approximate

Station Details Water Right Temperature Control Points

40

46

52

58

64

70

76

82

88

94

100

27

32

37

42

47

52

57

62

67

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

Air Temperature (°F)

Water Temperature (°F)

Trinity River Mean Daily Temperatures

Redding Air (Observed and Forecasted) LWS DGC NFH

4
Updated 05/14/2024 at 1244

Latest Profile Date: 05/08/2024

Page Description

6 - Shasta Lake Isothermobaths Plot

7 - Shasta Lake Cold Water Pool Volume ≤52°F

8 - Shasta Lake Cold Water Pool Volume ≤50°F

9 - Shasta Lake Cold Water Pool Volume ≤48°F

10 - Shasta Lake Cold Water Pool Volume ≤52°F - Percent Exceedances

11 - Shasta Lake Cold Water Pool Volume ≤50°F - Percent Exceedances

12 - Shasta Lake Cold Water Pool Volume ≤48°F - Percent Exceedances

13 - Shasta Lake Cold Water Pool Comparison by Year

Shasta Lake Isothermobaths & Cold Water Pool Statistics

2024

5
6

0

500

1000

1500

2000

2500

3000

3500

4000

4500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Shasta Lake Isothermobaths Plot - 2024

<46 46-48 48-50 50-52 52-54 54-56 56-58 58-60

60-62 62-64 64-66 66-68 68-70 >70 Storage
7

0

500

1000

1500

2000

2500

3000

3500

4000

4500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Shasta Lake Cold Water Pool Volume ≤52°F

Avg (1998-2023) 2014 2015 2016 2018 2019 2022 2023 2024
8

0

500

1000

1500

2000

2500

3000

3500

4000

4500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Shasta Lake Cold Water Pool Volume ≤50°F

Avg (1998-2023) 2014 2015 2016 2018 2019 2022 2023 2024
9

0

500

1000

1500

2000

2500

3000

3500

4000

4500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Shasta Lake Cold Water Pool Volume ≤48°F

Avg (1998-2023) 2014 2015 2016 2018 2019 2022 2023 2024
10

0

500

1000

1500

2000

2500

3000

3500

4000

4500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Shasta Lake Cold Water Pool Volume ≤52°F - Percent Exceedances (1998-2023)

2024 95 90 75 50 25 10 5
11

0

500

1000

1500

2000

2500

3000

3500

4000

4500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Shasta Lake Cold Water Pool Volume ≤50°F - Percent Exceedances (1998-2023)

2024 95 90 75 50 25 10 5
12

0

500

1000

1500

2000

2500

3000

3500

4000

4500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Shasta Lake Cold Water Pool Volume ≤48°F - Percent Exceedances (1998-2023)

2024 95 90 75 50 25 10 5
May-08

2024 ≤52° ≤50° ≤48° Abs. Avg. ≤52° ≤50° ≤48° Abs. Avg.

1998 380 318 1009 569 13 13 90 39

1999 132 349 1015 499 5 14 90 36

2000 -169 -422 60 217 -6 -17 5 9

2001 -430 -311 565 435 -15 -13 50 26

2002 -39 -10 617 222 -1 0 55 19

2003 22 -266 9 99 1 -11 1 4

2004 -411 -411 390 404 -14 -17 35 22

2005 -215 -282 -48 182 -7 -11 -4 8

2006 33 291 628 317 1 12 56 23

2007 -359 -214 516 363 -13 -9 46 22

2008 -1078 -885 230 731 -38 -36 20 31

2009 -908 -822 231 654 -32 -33 21 28

2010 147 143 698 329 5 6 62 24

2011 209 354 1101 555 7 14 98 40

2012 266 433 768 489 9 17 68 32

2013 -451 -315 383 383 -16 -13 34 21

2014 -1368 -1280 -425 1024 -48 -52 -38 46

2015 -1397 -1429 -897 1241 -49 -58 -80 62

2016 72 8 -77 52 3 0 -7 3

2017 286 -230 434 317 10 -9 39 19

2018 59 -43 -61 54 2 -2 -5 3

2019 284 -37 431 250 10 -1 38 17

2020 -297 -578 -253 376 -10 -23 -22 19

2021 -1422 -1231 -255 969 -50 -50 -23 41

2022 -1821 -1561 -344 1242 -64 -63 -31 52

2023 445 642 1536 874 16 26 137 59

2024 0 0 0 0 0 0 0 0

∆ TAF % ∆

Shasta Lake Cold Water Pool Comparison by Year (for Specified Date)

Historical - Current (Historical - Current) / Current

13
Updated 05/14/2024 at 1250

Latest Profile Date: 05/02/2024

Page Description

15 - Trinity Lake Isothermobaths Plot

16 - Trinity Lake Cold Water Pool Volume ≤52°F

17 - Trinity Lake Cold Water Pool Volume ≤50°F

18 - Trinity Lake Cold Water Pool Volume ≤48°F

19 - Trinity Lake Cold Water Pool Volume ≤52°F - Percent Exceedances

20 - Trinity Lake Cold Water Pool Volume ≤50°F - Percent Exceedances

21 - Trinity Lake Cold Water Pool Volume ≤48°F - Percent Exceedances

22 - Trinity Lake Cold Water Pool Comparison by Year

Trinity Lake Isothermobaths & Cold Water Pool Statistics

2024

14
15

0

250

500

750

1000

1250

1500

1750

2000

2250

2500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Trinity Lake Isothermobaths Plot - 2024

<46 46-48 48-50 50-52 52-54 54-56 56-58 58-60

60-62 62-64 64-66 66-68 68-70 >70 Storage
16

0

250

500

750

1000

1250

1500

1750

2000

2250

2500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Trinity Lake Cold Water Pool Volume ≤52°F

Avg (2000-2023) 2014 2015 2016 2018 2019 2022 2023 2024
17

0

250

500

750

1000

1250

1500

1750

2000

2250

2500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Trinity Lake Cold Water Pool Volume ≤50°F

Avg (2000-2023) 2014 2015 2016 2018 2019 2022 2023 2024
18

0

250

500

750

1000

1250

1500

1750

2000

2250

2500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Trinity Lake Cold Water Pool Volume ≤48°F

Avg (2000-2023) 2014 2015 2016 2018 2019 2022 2023 2024
19

0

250

500

750

1000

1250

1500

1750

2000

2250

2500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Trinity Lake Cold Water Pool Volume ≤52°F - Percent Exceedances (2000-2023)

2024 95 90 75 50 25 10 5
20

0

250

500

750

1000

1250

1500

1750

2000

2250

2500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Trinity Lake Cold Water Pool Volume ≤50°F - Percent Exceedances (2000-2023)

2024 95 90 75 50 25 10 5
21

0

250

500

750

1000

1250

1500

1750

2000

2250

2500

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Trinity Lake Cold Water Pool Volume ≤48°F - Percent Exceedances (2000-2023)

2024 95 90 75 50 25 10 5
May-02

2024 ≤52° ≤50° ≤48° Abs. Avg. ≤52° ≤50° ≤48° Abs. Avg.

2000 334 324 122 260 20 21 8 16

2001 -167 -149 -296 204 -10 -10 -20 13

2002 -123 -156 -172 151 -7 -10 -12 10

2003 496 166 25 229 30 11 2 14

2004 92 11 -102 68 6 1 -7 4

2005 6 -291 -491 263 0 -19 -33 17

2006 500 553 402 485 30 35 27 31

2007 -115 -241 -243 200 -7 -15 -17 13

2008 -180 -166 -523 290 -11 -11 -36 19

2009 -578 -638 -903 707 -35 -41 -61 46

2010 -200 -226 -514 314 -12 -14 -35 20

2011 267 189 142 199 16 12 10 13

2012 277 280 235 264 17 18 16 17

2013 -253 -253 -364 290 -15 -16 -25 19

2014 -721 -692 -760 724 -44 -44 -52 46

2015 -857 -908 -918 894 -52 -58 -62 57

2016 -593 -571 -587 584 -36 -37 -40 37

2017 281 227 107 205 17 15 7 13

2018 -120 -150 -231 167 -7 -10 -16 11

2019 312 344 142 266 19 22 10 17

2020 -94 -159 -308 187 -6 -10 -21 12

2021 -742 -722 -777 747 -45 -46 -53 48

2022 -1068 -1098 -1162 1109 -64 -70 -79 71

2023 -809 -716 -624 716 -49 -46 -42 46

2024 0 0 0 0 0 0 0 0

Trinity Cold Water Pool Comparison by Year (for Specified Date)

∆ TAF % ∆

Historical - Current (Historical - Current) / Current

22
Updated 05/14/2024 at 1254

Latest Profile Date: 05/07/2024

Page Description

24 - Whiskeytown Lake Isothermobaths Plot

25 - Whiskeytown Lake Cold Water Pool Volume ≤60°F

26 - Whiskeytown Lake Cold Water Pool Volume ≤58°F

27 - Whiskeytown Lake Cold Water Pool Volume ≤56°F

28 - Whiskeytown Lake Cold Water Pool Volume ≤60°F - Percent Exceedances

29 - Whiskeytown Lake Cold Water Pool Volume ≤58°F - Percent Exceedances

30 - Whiskeytown Lake Cold Water Pool Volume ≤56°F - Percent Exceedances

31 - Whiskeytown Lake Cold Water Pool Comparison by Year

Whiskeytown Lake Isothermobaths & Cold Water Pool Statistics

2024

23
24

0

50

100

150

200

250

300

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Whiskeytown Lake Isothermobaths Plot - 2024

<46 46-48 48-50 50-52 52-54 54-56 56-58 58-60

60-62 62-64 64-66 66-68 68-70 >70 Storage
25

0

50

100

150

200

250

300

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Whiskeytown Lake Cold Water Pool Volume ≤60°F

Avg (2000-2023) 2014 2015 2016 2018 2019 2022 2023 2024
26

0

50

100

150

200

250

300

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Whiskeytown Lake Cold Water Pool Volume ≤58°F

Avg (2000-2023) 2014 2015 2016 2018 2019 2022 2023 2024
27

0

50

100

150

200

250

300

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Whiskeytown Lake Cold Water Pool Volume ≤56°F

Avg (2000-2023) 2014 2015 2016 2018 2019 2022 2023 2024
28

0

50

100

150

200

250

300

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Whiskeytown Lake Cold Water Pool Volume ≤60°F - Percent Exceedances (2000-2023)

2024 95 90 75 50 25 10 5
29

0

50

100

150

200

250

300

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Whiskeytown Lake Cold Water Pool Volume ≤58°F - Percent Exceedances (2000-2023)

2024 95 90 75 50 25 10 5
30

0

50

100

150

200

250

300

01/01 02/01 03/01 04/01 05/01 06/01 07/01 08/01 09/01 10/01 11/01 12/01

Volume (TAF)

Whiskeytown Lake Cold Water Pool Volume ≤56°F - Percent Exceedances (2000-2023)

2024 95 90 75 50 25 10 5
May-07

2024 ≤60° ≤58° ≤56° Abs. Avg. ≤60° ≤58° ≤56° Abs. Avg.

2000 -22.9 -76.3 33.1 44.1 -9.6 -32.0 37.1 26.2

2001 -29.6 -59.3 32.2 40.4 -12.4 -24.8 36.1 24.4

2002 -36.7 -83.9 44.2 54.9 -15.4 -35.2 49.5 33.3

2003 0.8 0.8 150.0 50.5 0.3 0.3 168.0 56.2

2004 -60.8 -72.6 58.3 63.9 -25.5 -30.4 65.3 40.4

2005 -71.9 -75.8 70.3 72.7 -30.2 -31.8 78.7 46.9

2006 -28.4 -51.8 71.5 50.6 -11.9 -21.7 80.1 37.9

2007 -54.5 -72.1 56.4 61.0 -22.9 -30.2 63.1 38.7

2008 -15.2 -15.8 120.5 50.5 -6.4 -6.6 135.0 49.3

2009 -77.7 -90.2 48.0 72.0 -32.6 -37.8 53.7 41.4

2010 -10.2 -10.2 96.8 39.1 -4.3 -4.3 108.5 39.0

2011 -10.1 -14.6 97.4 40.7 -4.2 -6.1 109.0 39.8

2012 -86.0 -91.1 47.8 75.0 -36.0 -38.2 53.5 42.6

2013 -98.9 -100.9 44.9 81.6 -41.5 -42.3 50.3 44.7

2014 -6.0 -121.1 22.8 50.0 -2.5 -50.8 25.5 26.3

2015 -120.3 -125.6 10.1 85.3 -50.4 -52.7 11.3 38.1

2016 -52.4 -87.7 37.1 59.0 -22.0 -36.7 41.5 33.4

2017 -13.3 -65.5 38.5 39.1 -5.6 -27.5 43.2 25.4

2018 -68.0 -70.7 73.9 70.9 -28.5 -29.6 82.8 47.0

2019 -77.2 -87.9 51.5 72.2 -32.3 -36.8 57.7 42.3

2020 -69.7 -77.7 47.4 64.9 -29.2 -32.6 53.1 38.3

2021 -87.2 -91.8 26.6 68.6 -36.6 -38.5 29.8 35.0

2022 -17.0 -17.0 18.4 17.4 -7.1 -7.1 20.6 11.6

2023 -5.6 -5.6 143.7 51.6 -2.3 -2.3 160.9 55.2

2024 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

∆ TAF % ∆

Whiskeytown Cold Water Pool Comparison by Year (for Specified Date)

Historical - Current (Historical - Current) / Current

31