Report Generated 02/01/2023 at 0732

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

January - 2023
Shasta 

Generation 

Spring 

Creek P.P.

Keswick 

Total BSF RDB

Dec 2631 57 3295 42.4 44.2

01/01 50.9 ? 51.5 49.6 50.3 49.9 49.7 49.2 ? 48.6 ? 48.7 47.7 45.8 43.4 44.3 2611 37 3335 51.5 48.7 51.2

01/02 50.8 ! - 49.7 50.3 49.6 49.1 48.1 # - ? 47.1 46.7 45.6 42.0 42.7 2866 37 3338 41.5 37.5 39.3

01/03 50.5 ! - 49.4 50.0 49.6 49.3 47.6 # - ? 46.1 47.1 45.5 41.8 42.3 2792 37 3342 41.5 40.1 40.4

01/04 50.2 ! - 49.1 49.8 49.5 49.5 48.2 ! - ? 46.9 47.7 45.6 43.1 43.5 1819 460 3330 50.0 46.2 47.2

01/05 49.6 ! - 49.1 49.8 49.7 50.0 49.5 49.0 48.7 49.2 45.6 43.9 44.8 1051 791 3335 51.5 52.7 52.3

01/06 49.6 ! - 49.1 49.7 49.4 49.6 49.4 49.1 49.0 48.6 45.3 43.5 44.7 1468 1839 3341 48.0 47.5 50.2

01/07 49.7 ! - 48.9 49.5 49.3 49.4 49.3 49.0 48.8 48.9 45.1 43.8 44.9 950 1698 3349 49.0 48.4 49.7

01/08 49.7 ! - 48.9 49.5 49.4 49.6 49.1 48.7 48.6 49.6 45.4 43.8 45.1 165 1833 3791 52.5 51.7 52.2

01/09 49.0 ? 49.2 48.9 49.7 50.1 50.3 50.7 50.5 50.3 50.6 45.1 44.6 46.2 359 1920 4342 53.0 52.8 53.3

01/10 ? 49.0 ? 49.3 48.8 49.9 49.7 49.8 49.8 49.6 49.9 49.7 45.1 44.1 45.6 25 1982 4353 49.0 48.9 49.1

01/11 49.0 49.6 48.7 49.8 49.6 49.7 49.5 49.1 48.8 49.3 45.0 43.9 45.2 921 1946 4321 48.0 47.8 48.4

01/12 49.3 49.2 48.6 49.9 50.1 50.4 49.7 49.6 49.3 49.7 45.1 44.2 46.0 95 1944 4311 53.0 52.5 53.5

01/13 49.2 48.9 48.6 50.0 50.2 50.3 50.8 ? 50.8 50.7 49.6 45.1 45.3 47.1 1078 1927 4305 52.0 50.8 51.3

01/14 49.2 ! 49.7 48.6 50.1 50.5 50.6 50.7 # - 50.5 49.6 45.2 45.1 46.6 174 1859 4304 51.5 52.3 52.9

01/15 48.9 49.5 48.6 50.1 50.0 50.1 50.1 # - 49.8 49.0 45.0 44.8 46.1 591 1894 4363 47.5 47.4 48.0

01/16 48.8 ? 48.7 48.5 49.9 49.7 49.9 49.5 # - 48.9 48.8 45.0 44.4 45.7 1353 1882 4254 46.0 45.1 45.9

01/17 48.8 48.5 48.4 49.5 49.3 49.4 48.6 # - ? 48.0 48.3 45.0 43.7 44.5 1459 1894 4122 45.0 41.4 43.2

01/18 49.3 48.4 48.4 49.2 48.8 48.6 48.1 ! - 47.0 47.4 ? 44.9 ? 43.1 43.5 1994 1903 4099 38.5 38.3 40.5

01/19 49.5 ? 49.0 48.3 48.8 48.4 48.5 47.0 46.2 46.2 ? 46.5 44.7 42.2 42.9 1029 1731 4005 42.5 41.2 43.5

01/20 49.5 ? 49.0 48.2 48.3 48.0 48.1 ? 47.2 46.0 45.9 46.1 44.6 42.3 43.0 1493 1705 3906 47.0 43.7 44.8

01/21 49.5 ? 48.9 48.0 47.9 47.6 47.7 ? 47.1 45.5 45.6 46.0 44.5 42.0 42.5 1619 1726 3775 42.0 38.4 40.9

01/22 49.5 48.6 47.9 47.8 47.5 47.5 47.0 45.5 45.5 46.0 44.4 41.8 42.6 1062 1813 3677 43.5 43.3 44.5

01/23 49.3 ? 48.5 47.9 47.9 47.6 47.7 46.9 45.7 45.6 46.1 44.2 41.5 42.0 1043 1803 3575 55.0 52.6 52.8

01/24 49.3 48.7 47.8 47.9 47.8 48.1 47.7 46.6 46.4 46.5 44.1 41.1 41.8 1305 1819 3474 58.0 53.2 55.0

01/25 49.0 ? 48.4 47.7 48.0 47.9 48.3 48.2 47.6 47.6 46.5 44.1 41.3 42.1 1192 1816 3398 ↑ 59.5 56.0 55.9

01/26 49.2 ? 48.4 47.7 ? 48.0 48.0 48.5 48.7 47.6 48.1 46.9 44.0 41.2 42.1 1022 1924 3310 58.0 52.5 53.0

01/27 48.9 48.5 47.7 47.9 47.7 47.9 48.6 46.8 48.0 46.4 43.9 41.2 42.0 1151 1891 3311 46.5 42.3 44.8

01/28 48.9 48.5 47.5 47.9 47.7 47.9 48.1 45.6 47.3 45.9 43.8 41.1 42.2 1182 1934 3317 51.5 45.8 48.0

01/29 48.9 48.4 47.5 47.7 47.4 47.3 47.9 45.3 46.9 45.3 43.7 40.4 41.4 1365 1316 3321 44.5 43.3 44.1

01/30 48.9 48.2 47.2 47.4 47.0 46.2 45.7 41.9 44.6 44.2 43.3 38.9 39.5 1569 1308 3335 45.5 41.9 42.5

01/31 48.6 48.0 47.3 47.3 47.1 47.0 46.2 40.1 43.8 44.7 43.3 38.5 38.9 2009 639 3325 48.0 41.4 43.8

Jan 1252 1526 3731 46.6 47.8

38812 47308 115664

Legend Notes 76982 93833 229415

? = 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 Sacramento River control point (see page 4 for more details)

↑ = Record high air temperature

↓ = Record low air temperature

 = Monthly Averages

49.4 48.9 48.4 48.8 48.9 48.5

D

A

T

E

52.9 52.0

SAC CCR 2 TCD1 SHD SPP1 KWK

51.9 51.6 51.1 50.8 49.8 48.6

Mean Daily Air 

Temperatures (°F)

RDD

45.3

Total CFS

43.6 48.7

Mean Daily 

Release (CFS)

NFH

42.5

Mean Daily Water Temperatures (°F)

44.7

BND IGO

49.0

BSF

47.2

Total AF

48.6 49.5

RDB

47.7 47.6

LWS

44.7 42.6

DGC

42.1

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 SAC 55 06/15/2021 05/02/2022

SHD Sacramento River 0.3 miles downstream of Shasta Power Plant Click Here Sacramento SAC 58 05/02/2022 06/07/2022

SPP N/A Spring Creek Power Plant N/A Sacramento SAC 54.5 06/07/2022 TBD

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

28

32

36

40

44

48

52

56

60

64

68

72

76

44

45

46

47

48

49

50

51

52

53

54

55

56

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

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 Trinity DGC 56 Sep-15 Oct-01

DGC Trinity River 19 miles downstream of Lewiston Dam Click Here Trinity NFH 56 Oct-01 Dec-31

NFH Trinity River 38 miles downstream of Lewiston Dam Click Here

 Notes

1 Distances are approximate

Station Details Water Right Temperature Control Points

23

28

33

38

43

48

53

58

63

68

73

38

39

40

41

42

43

44

45

46

47

48

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

Air Temperature (°F)

Water Temperature (°F)

Trinity River Mean Daily Temperatures

Redding Air (Observed and Forecasted) LWS DGC NFH

4
Updated 01/13/2023 at 0845

Latest Profile Date: 01/10/2023

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

2023

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 - 2023

<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 (1998-2022) 2014 2015 2016 2019 2021 2023
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 (1998-2022) 2014 2015 2016 2019 2021 2023
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 (1998-2022) 2014 2015 2016 2019 2021 2023
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 (1998-2022)

2023 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 (1998-2022)

2023 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 (1998-2022)

2023 95 90 75 50 25 10 5
Jan-10

2023 ≤52° ≤50° ≤48° Abs. Avg. ≤52° ≤50° ≤48° Abs. Avg.

1998 -618 390 -60 356 -34 50 -20 35

1999 1503 431 478 804 82 55 159 99

2000 755 -29 -40 275 41 -4 -13 19

2001 392 -333 -192 306 21 -43 -64 43

2002 330 1275 75 560 18 164 25 69

2003 1482 122 38 547 81 16 12 36

2004 1617 45 -203 622 89 6 -67 54

2005 -211 547 -9 255 -12 70 -3 28

2006 1563 167 -84 605 86 21 -28 45

2007 1457 -74 -36 522 80 -9 -12 34

2008 53 -77 242 124 3 -10 80 31

2009 -604 443 -132 393 -33 57 -44 45

2010 123 67 25 72 7 9 8 8

2011 1644 29 -151 608 90 4 -50 48

2012 1238 -149 149 512 68 -19 49 45

2013 1553 137 121 603 85 18 40 48

2014 -170 -246 17 144 -9 -32 6 15

2015 88 -377 -247 237 5 -48 -82 45

2016 -450 586 94 376 -25 75 31 44

2017 1509 2506 232 1416 83 322 77 160

2018 -709 -171 59 313 -39 -22 19 27

2019 -836 -42 -197 358 -46 -5 -65 39

2020 -447 -5 -19 157 -24 -1 -6 11

2021 67 -390 -216 224 4 -50 -72 42

2022 -395 652 36 361 -22 84 12 39

2023 0 0 0 0 0 0 0 0

∆ TAF % ∆

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

Historic - Current (Historic - Current) / Current

13
Updated 01/26/2023 at 1417

Latest Profile Date: 01/26/2023

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

2023

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 - 2023

<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 (2000-2022) 2014 2015 2016 2019 2023
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 (2000-2022) 2014 2015 2016 2019 2023
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 (2000-2022) 2014 2015 2016 2019 2023
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 (2000-2022)

2023 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 (2000-2022)

2023 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 (2000-2022)

2023 95 90 75 50 25 10 5
Jan-26

2023 ≤52° ≤50° ≤48° Abs. Avg. ≤52° ≤50° ≤48° Abs. Avg.

2000 1231 1238 1239 1236 164 167 167 166

2001 944 952 953 950 126 128 128 127

2002 793 792 780 788 106 107 105 106

2003 977 984 956 972 130 132 129 130

2004 1122 1130 1131 1128 150 152 152 151

2005 818 549 481 616 109 74 65 83

2006 1272 1280 1281 1278 170 172 173 171

2007 1053 1061 1062 1059 140 143 143 142

2008 667 675 676 673 89 91 91 90

2009 251 259 259 256 33 35 35 34

2010 275 111 82 156 37 15 11 21

2011 1029 1036 1037 1034 137 140 140 139

2012 1212 800 723 912 161 108 97 122

2013 1172 1180 1180 1177 156 159 159 158

2014 426 433 424 428 57 58 57 57

2015 111 118 36 88 15 16 5 12

2016 -112 -105 -136 118 -15 -14 -18 16

2017 804 543 501 616 107 73 68 83

2018 1019 1026 696 914 136 138 94 123

2019 820 828 829 826 109 111 112 111

2020 1235 1242 1243 1240 165 167 168 166

2021 504 512 513 509 67 69 69 68

2022 2 10 11 8 0 1 1 1

2023 0 0 0 0 0 0 0 0

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

∆ TAF % ∆

Historic - Current (Historic - Current) / Current

22
Updated 01/13/2023 at 0843

Latest Profile Date: 01/12/2023

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

2023

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 - 2023

<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 (2000-2022) 2014 2015 2016 2019 2021 2023
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 (2000-2022) 2014 2015 2016 2019 2021 2023
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 (2000-2022) 2014 2015 2016 2019 2021 2023
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 (2000-2022)

2023 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 (2000-2022)

2023 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 (2000-2022)

2023 95 90 75 50 25 10 5
Jan-12

2023 ≤60° ≤58° ≤56° Abs. Avg. ≤60° ≤58° ≤56° Abs. Avg.

2000 -41.3 -41.3 -41.3 41.3 -16.7 -16.7 -16.7 16.7

2001 -35.7 -35.7 -35.7 35.7 -14.5 -14.5 -14.5 14.5

2002 -38.5 -38.5 -38.5 38.5 -15.6 -15.6 -15.6 15.6

2003 -40.5 -40.5 -40.5 40.5 -16.4 -16.4 -16.4 16.4

2004 -40.5 -40.5 -40.5 40.5 -16.4 -16.4 -16.4 16.4

2005 -38.1 -38.1 -38.1 38.1 -15.4 -15.4 -15.4 15.4

2006 -41.4 -41.4 -41.4 41.4 -16.7 -16.7 -16.7 16.7

2007 -41.8 -41.8 -41.8 41.8 -16.9 -16.9 -16.9 16.9

2008 -42.2 -42.2 -42.2 42.2 -17.1 -17.1 -17.1 17.1

2009 -40.3 -40.3 -40.3 40.3 -16.3 -16.3 -16.3 16.3

2010 -37.4 -37.4 -37.4 37.4 -15.1 -15.1 -15.1 15.1

2011 -41.9 -41.9 -41.9 41.9 -17.0 -17.0 -17.0 17.0

2012 -41.6 -41.6 -41.6 41.6 -16.8 -16.8 -16.8 16.8

2013 -40.0 -40.0 -40.0 40.0 -16.2 -16.2 -16.2 16.2

2014 -41.8 -41.8 -41.8 41.8 -16.9 -16.9 -16.9 16.9

2015 -40.2 -40.2 -40.2 40.2 -16.3 -16.3 -16.3 16.3

2016 -34.2 -34.2 -34.2 34.2 -13.8 -13.8 -13.8 13.8

2017 -25.4 -25.4 -25.4 25.4 -10.3 -10.3 -10.3 10.3

2018 -42.0 -42.0 -42.0 42.0 -17.0 -17.0 -17.0 17.0

2019 -37.0 -37.0 -37.0 37.0 -15.0 -15.0 -15.0 15.0

2020 -40.2 -40.2 -40.2 40.2 -16.3 -16.3 -16.3 16.3

2021 -41.8 -41.8 -41.8 41.8 -16.9 -16.9 -16.9 16.9

2022 -39.9 -39.9 -39.9 39.9 -16.1 -16.1 -16.1 16.1

2023 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)

Historic - Current (Historic - Current) / Current

31