Report Generated 01/08/2024 at 0244

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

December - 2023
Shasta 

Generation 

Spring 

Creek P.P.

Keswick 

Total BSF RDB

Nov 4784 284 5096 50.4 52.9

12/01 49.8 48.6 54.6 49.1 48.9 48.8 48.7 48.4 48.2 51.1 45.3 43.8 43.8 4954 37 5144 42.5 40.9 43.6

12/02 49.7 48.7 54.7 49.1 49.1 49.2 49.2 49.0 48.8 51.8 45.3 44.7 45.3 4910 37 5156 50.5 47.8 49.8

12/03 49.9 48.6 54.6 49.3 49.4 49.7 50.1 50.3 50.2 52.7 45.5 45.7 46.2 4914 37 5107 56.5 55.3 56.1

12/04 50.2 49.1 54.2 49.4 49.6 50.1 50.6 50.8 51.0 52.8 45.5 46.9 47.6 4811 48 5093 59.5 54.6 55.6

12/05 50.0 48.8 54.2 49.5 49.5 49.9 50.4 ? 50.8 51.2 52.5 45.5 ? 47.3 48.5 4946 37 5099 56.5 50.8 52.7

12/06 ? 50.3 ? 49.0 ? 54.2 ? 49.7 ? 49.6 ? 49.8 ? 50.1 ? 50.3 ? 50.5 ? 52.0 ? 45.3 ? 46.6 ? 48.0 5062 37 5039 52.0 49.5 50.2

12/07 # 49.9 # 49.0 # 53.7 # 49.5 # 49.4 # 49.5 # 49.8 # 49.7 # 49.9 # 51.3 # 45.0 # 44.9 # 46.3 4646 122 5159 # 49.0 45.3 49.0

12/08 ? 50.7 ? 49.9 ? 52.5 ? 49.4 ? 49.3 ? 49.5 ? 49.5 ? 49.2 ? 49.4 ? 50.5 ? 44.8 ? 43.7 ? 44.7 4955 60 5224 ? 48.0 46.3 45.6

12/09 ? 49.6 ? 49.5 ? 52.0 ? 49.2 ? 49.1 ? 49.0 ? 48.8 ? 48.3 ? 48.4 ? 50.9 ? 44.7 ? 42.8 ? 43.5 5095 99 5007 ? 50.0 41.9 45.8

12/10 ? 50.3 ? 48.9 ? 50.6 ? 49.6 ? 49.4 ? 49.2 ? 48.7 ? 47.9 ? 47.8 ? 50.6 ? 44.6 ? 42.4 ? 42.8 4737 55 5005 ? 45.5 38.3 42.3

12/11 51.0 49.3 42.6 49.6 49.6 49.7 49.1 48.2 47.9 51.2 44.6 42.5 42.8 4747 14 4997 49.5 41.9 44.7

12/12 50.5 49.5 42.4 49.5 49.4 49.7 49.6 ? 49.0 ! 48.3 51.6 44.7 43.0 43.1 4590 14 5018 54.0 46.8 50.1

12/13 50.8 49.9 42.4 49.6 49.4 49.5 49.5 49.0 ? 49.0 50.9 44.6 42.8 43.1 4883 14 5081 53.5 44.9 50.0

12/14 51.4 50.6 42.9 49.7 49.6 49.5 49.3 48.7 48.7 50.3 44.5 42.7 43.1 4842 14 5084 50.5 42.4 45.0

12/15 54.0 53.1 42.5 49.8 49.7 49.7 49.3 ? 48.5 48.4 50.2 44.3 42.5 42.5 4953 14 5047 50.5 41.1 46.0

12/16 53.9 52.9 42.4 50.7 50.3 50.0 49.4 ? 48.8 ? 48.5 50.1 44.1 41.9 42.2 4861 14 5096 53.5 44.0 49.2

12/17 53.6 52.7 42.3 52.0 51.7 51.3 50.2 ? 49.1 48.6 50.1 43.9 41.2 41.3 4975 14 5088 45.5 41.3 46.4

12/18 53.7 52.8 42.2 52.4 52.2 52.1 51.6 50.9 50.2 50.6 44.0 42.6 43.0 5149 14 5087 51.0 49.1 49.4

12/19 53.2 52.4 51.7 52.6 52.5 52.7 51.8 51.9 ? 52.1 51.1 44.2 44.5 44.8 4572 324 5085 ↓ 57.0 58.5 58.3

12/20 52.9 52.1 51.9 52.8 52.7 53.0 53.1 52.6 ? 52.7 51.8 44.5 45.6 46.1 3530 670 5111 57.0 54.1 55.9

12/21 53.2 52.4 43.5 52.6 52.4 52.6 52.6 ? 51.9 52.3 50.5 44.4 45.8 46.7 4556 16 5101 53.5 49.0 50.7

12/22 53.1 52.4 50.9 52.4 52.2 52.3 52.1 ? 51.2 ? 51.4 50.2 ? 44.3 45.3 ? 46.5 4533 123 5109 55.0 49.7 53.4

12/23 53.2 52.4 51.7 52.3 51.9 51.7 51.2 50.4 50.5 49.3 44.2 43.7 45.0 4267 380 5111 50.0 49.1 50.5

12/24 52.9 52.2 51.5 52.0 51.7 51.5 50.8 49.6 49.5 49.0 44.2 42.6 43.0 4300 391 5108 44.5 41.4 44.1

12/25 52.8 52.1 49.6 52.1 51.9 51.9 51.6 ? 50.7 50.1 50.1 44.4 43.8 44.1 5015 49 5094 51.0 48.0 48.3

12/26 52.7 52.0 49.1 52.2 51.9 51.9 51.6 ? 50.9 50.8 49.8 44.6 44.3 45.0 4898 47 5101 49.5 46.5 48.7

12/27 53.2 51.6 49.1 52.1 51.8 51.7 51.5 50.9 50.7 49.4 44.7 44.1 45.0 4288 646 6100 47.5 45.9 47.2

12/28 51.1 51.8 51.0 52.0 51.7 51.9 51.4 51.2 51.3 50.1 45.1 45.1 45.7 4171 348 5065 52.5 51.0 52.1

12/29 52.0 51.5 51.2 51.9 51.8 52.0 52.1 51.9 51.7 50.7 45.4 46.0 46.9 2959 1501 5050 ↑ 55.0 52.0 53.1

12/30 51.9 51.8 51.2 51.8 51.8 52.1 52.2 52.1 52.3 51.1 45.6 46.1 46.9 2752 1725 5037 55.5 51.5 52.3

12/31 52.2 51.8 51.1 51.8 51.7 52.0 52.3 52.2 52.3 50.7 45.7 46.1 46.8 3679 1132 5022 53.5 50.7 51.4

Dec 4596 230 5120 51.5 47.3 49.5

141550 8033 158625

Legend Notes 280759 15933 314626

? = 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

51.7 50.9 49.3 50.6 50.5

D

A

T

E

49.6 48.3

CCR2 TCD SAC 1 SHD SPP1 KWK

55.9 49.6 49.6 49.9 50.4 50.4

Mean Daily Air 

Temperatures (°F)

RDD

54.8

Total CFS

44.8

Mean Daily 

Release (CFS)

NFH

47.8

Mean Daily Water Temperatures (°F)

47.7

BND IGO

50.8

BSF

50.7 50.1

Total AF

50.7 53.3

RDB

50.0 50.8

LWS

44.7 44.2

DGC

46.8

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 54.5 06/07/2022 5/14/2023

SHD Sacramento River 0.3 miles downstream of Shasta Power Plant Click Here Sacramento CCR 53.5 05/14/2023 TBD

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

25

30

35

40

45

50

55

60

65

70

75

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 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

25

30

35

40

45

50

55

60

65

70

75

80

25

30

35

40

45

50

55

60

65

70

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 12/05/2023 at 1422

Latest Profile Date: 12/05/2023

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 2022 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 2022 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 2022 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
Dec-05

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

1998 -394 -491 -507 464 -49 -78 -99 75

1999 -482 -395 -342 406 -60 -63 -67 63

2000 -493 -518 -492 501 -62 -82 -96 80

2001 -538 -484 -485 502 -67 -77 -95 80

2002 -4 -387 -403 265 -1 -61 -79 47

2003 -424 -528 -493 482 -53 -84 -96 78

2004 -565 -536 -497 533 -71 -85 -97 84

2005 -719 -598 -491 603 -90 -95 -96 94

2006 -353 -447 -417 406 -44 -71 -82 66

2007 -759 -610 -496 622 -95 -97 -97 96

2008 -764 -605 -497 622 -96 -96 -97 96

2009 -625 -560 -468 551 -78 -89 -91 86

2010 -447 -486 -471 468 -56 -77 -92 75

2011 -270 -265 -247 261 -34 -42 -48 41

2012 -489 -449 -417 452 -61 -71 -81 71

2013 -549 -505 -472 509 -69 -80 -92 80

2014 -772 -618 -507 632 -97 -98 -99 98

2015 -741 -610 -512 621 -93 -97 -100 97

2016 -412 -362 -413 396 -52 -57 -81 63

2017 -352 -304 -271 309 -44 -48 -53 48

2018 -685 -578 -498 587 -86 -92 -97 92

2019 -239 -223 -234 232 -30 -35 -46 37

2020 -703 -602 -506 604 -88 -96 -99 94

2021 -700 -544 -494 579 -88 -86 -97 90

2022 -662 -582 -496 580 -83 -92 -97 91

2023 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 12/14/2023 at 1333

Latest Profile Date: 12/14/2023

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 2022 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 2022 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 2022 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
Dec-14

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

2000 21 677 -24 241 2 159 -8 56

2001 -432 268 297 332 -36 63 103 67

2002 -391 327 366 361 -33 77 127 79

2003 465 89 -56 203 39 21 -19 26

2004 213 16 -95 108 18 4 -33 18

2005 151 821 785 586 13 193 272 159

2006 558 1001 196 585 47 235 68 117

2007 -215 515 589 440 -18 121 204 114

2008 -640 87 190 306 -53 20 66 47

2009 -348 -71 -19 146 -29 -17 -7 17

2010 125 831 872 609 10 195 302 169

2011 713 265 166 381 60 62 57 60

2012 -26 703 759 496 -2 165 263 143

2013 -447 268 340 352 -37 63 118 73

2014 -663 76 -224 321 -55 18 -78 50

2015 -843 -81 -262 395 -70 -19 -91 60

2016 -59 -135 -132 108 -5 -32 -46 27

2017 -31 608 76 238 -3 143 26 57

2018 252 274 248 258 21 64 86 57

2019 624 515 388 509 52 121 135 103

2020 66 111 116 98 5 26 40 24

2021 -947 -201 -94 414 -79 -47 -32 53

2022 -643 -205 -109 319 -54 -48 -38 47

2023 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 12/14/2023 at 0902

Latest Profile Date: 12/13/2023

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 2022 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 2022 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 2022 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
Dec-13

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

2000 -24.5 -24.5 -18.1 22.3 -10.9 -10.9 -8.3 10.0

2001 -14.8 -14.8 -8.4 12.6 -6.6 -6.6 -3.8 5.7

2002 -18.6 -18.6 -12.2 16.5 -8.3 -8.3 -5.6 7.4

2003 -17.3 -17.3 -20.4 18.4 -7.7 -7.7 -9.4 8.3

2004 -5.8 -5.8 0.6 4.1 -2.6 -2.6 0.3 1.8

2005 -18.3 -18.3 -11.9 16.2 -8.2 -8.2 -5.5 7.3

2006 -19.4 -19.4 -13.0 17.3 -8.6 -8.6 -6.0 7.8

2007 -19.2 -19.2 -61.9 33.4 -8.5 -8.5 -28.4 15.2

2008 -17.9 -17.9 -11.5 15.7 -8.0 -8.0 -5.3 7.1

2009 -18.3 -18.3 -11.9 16.2 -8.2 -8.2 -5.5 7.3

2010 -15.9 -15.9 -9.5 13.8 -7.1 -7.1 -4.4 6.2

2011 -18.4 -18.4 -12.0 16.3 -8.2 -8.2 -5.5 7.3

2012 -16.0 -34.4 -31.1 27.1 -7.1 -15.3 -14.3 12.2

2013 -16.4 -26.5 -21.1 21.3 -7.3 -11.8 -9.7 9.6

2014 -17.6 -17.6 -11.2 15.4 -7.8 -7.8 -5.1 6.9

2015 -19.6 -35.7 -30.8 28.7 -8.8 -15.9 -14.1 12.9

2016 -16.7 -16.7 -10.3 14.5 -7.4 -7.4 -4.7 6.5

2017 -19.4 -19.4 -13.0 17.2 -8.6 -8.6 -6.0 7.7

2018 -19.8 -19.8 -13.4 17.7 -8.8 -8.8 -6.2 7.9

2019 -7.2 -7.2 -16.9 10.4 -3.2 -3.2 -7.8 4.7

2020 -19.3 -19.3 -12.8 17.1 -8.6 -8.6 -5.9 7.7

2021 -17.7 -17.7 -11.2 15.5 -7.9 -7.9 -5.2 7.0

2022 -10.5 -10.5 -4.1 8.4 -4.7 -4.7 -1.9 3.8

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)

Historical - Current (Historical - Current) / Current

31