Report Generated 06/23/2023 at 1406

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

April - 2023
Shasta 

Generation 

Spring 

Creek P.P.

Keswick 

Total BSF RDB

Mar 1729 883 3597 46.9 48.3

04/01 46.4 45.8 46.2 47.1 47.3 47.9 49.8 # 51.5 47.5 44.5 # 46.1 1717 460 3304 54.5 52.3 53.7

04/02 46.2 45.8 46.5 47.5 47.9 48.7 50.1 # ? 49.3 47.0 44.7 # 45.3 1018 1653 3315 51.0 51.4 52.3

04/03 46.4 45.8 46.7 47.1 47.3 47.8 49.2 # ? 50.9 46.7 45.7 # 44.5 965 1650 3322 46.5 45.5 47.4

04/04 46.4 45.9 46.8 47.2 47.6 48.2 49.1 # 50.1 46.8 46.5 # 44.9 2278 330 3321 46.0 44.9 47.3

04/05 47.0 ? 46.9 47.4 47.2 47.7 48.7 50.1 # ? 50.9 47.6 45.9 # 45.6 2401 37 3320 48.0 48.1 49.6

04/06 47.4 ? 46.8 47.4 47.2 47.4 48.1 50.5 # 51.8 47.8 45.9 # 45.9 2535 37 3303 53.0 50.9 51.0

04/07 47.0 ? 47.0 46.7 47.5 48.0 48.2 50.4 # 51.4 48.6 46.4 # 46.1 2470 333 3281 53.5 53.3 53.0

04/08 47.1 46.6 46.6 47.9 48.8 49.2 51.2 # ? 52.0 50.3 45.9 # 46.8 2241 533 3310 55.5 54.5 55.3

04/09 47.5 ? 47.3 46.7 48.1 49.1 50.0 52.7 # 53.7 50.7 46.0 # 46.9 1119 1466 3356 59.5 58.5 59.5

04/10 47.4 46.7 46.9 48.3 49.5 50.7 54.3 # 55.9 51.9 46.2 # 48.1 1130 1561 3344 63.0 62.4 64.4

04/11 47.9 47.7 47.3 48.9 49.8 51.2 56.0 # 58.0 52.2 45.9 # 48.3 1893 676 3382 64.5 63.5 63.2

04/12 48.5 47.9 48.4 49.6 50.0 50.8 54.3 # ? 56.7 49.8 45.8 # 46.8 1645 945 2733 57.0 56.1 56.7

04/13 48.8 48.8 48.1 49.6 50.2 50.9 52.6 ! ? 53.6 48.9 44.8 # 46.0 1724 1054 3329 57.0 54.4 55.8

04/14 48.4 48.9 47.9 49.2 50.0 51.2 52.9 ? 52.9 53.7 49.5 44.5 # 46.1 1883 451 3341 57.0 52.0 54.3

04/15 48.3 ? 47.9 47.7 49.4 50.1 51.3 53.6 54.2 ? 54.9 50.3 44.7 # 46.9 2056 520 3311 57.0 55.5 56.7

04/16 48.2 ? 47.4 47.7 49.8 50.4 51.7 54.6 55.4 56.1 50.7 44.9 # 47.1 2371 473 3310 57.5 56.0 56.4

04/17 47.8 47.9 48.3 49.9 50.0 50.8 53.7 55.2 55.8 49.4 43.9 # 45.7 2196 662 3296 52.5 52.8 53.6

04/18 47.8 47.1 48.2 49.7 50.0 50.6 52.0 52.6 ? 53.6 48.2 43.4 # 44.5 1975 612 3318 48.0 48.9 51.5

04/19 48.3 47.4 48.0 49.2 49.9 51.0 52.7 53.1 ? 54.0 48.6 43.6 # 44.8 2128 427 3309 50.5 52.5 54.5

04/20 48.7 48.4 48.3 49.0 49.7 50.9 53.2 53.7 ? 54.5 49.4 44.2 # 45.3 1674 588 3294 56.0 54.9 56.7

04/21 49.1 ? 48.2 48.4 49.0 49.9 51.1 53.9 55.1 ? 55.8 50.9 44.6 # 46.6 3081 577 4102 64.0 62.5 65.3

04/22 49.4 ? 48.2 48.1 49.7 50.5 51.7 54.5 56.2 ? 57.3 51.9 44.4 # 46.7 3126 706 4414 74.0 69.8 71.8

04/23 49.0 47.5 48.5 50.1 51.1 52.3 55.6 57.4 ? 58.6 52.2 44.7 # 47.1 3429 404 4528 68.0 66.3 70.1

04/24 49.4 47.8 48.7 50.1 50.6 51.5 55.1 57.4 58.8 51.5 44.9 # 47.0 5211 742 7403 63.5 62.9 64.7

04/25 50.1 48.9 48.2 49.7 50.2 51.0 53.4 55.1 ? 56.6 51.6 45.2 # 47.4 6277 685 8520 73.0 67.8 68.6

04/26 50.5 49.3 48.2 50.2 50.6 51.2 53.4 55.2 ? 56.4 52.3 45.4 # 47.7 7200 738 8506 70.0 67.3 70.7

04/27 ? 49.9 48.3 48.4 50.8 ? 51.3 52.0 54.4 ? 56.2 ? 57.4 ? 52.8 ? 45.1 # 47.7 5801 465 8592 74.0 70.5 71.3

04/28 50.0 ? 48.3 48.5 ! 50.6 51.2 52.0 55.0 57.1 ? 58.4 53.1 45.7 # 48.3 6560 536 8671 75.0 70.3 72.2

04/29 50.0 ? 48.4 48.7 # 50.9 51.7 54.7 57.2 58.7 53.5 46.2 # 49.0 6718 426 8251 74.5 71.0 73.5

04/30 50.0 48.5 48.6 # 50.8 51.5 54.4 56.7 ? 58.1 52.9 46.5 # 49.1 7528 532 9678 68.5 65.5 65.9

-

Apr 3078 676 4615 59.7 58.1 59.6

92350 20279 138464

Legend Notes 183172 40223 274638

? = 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 3 DGC reporting incorrect water temperatures due to probe being buried in fine sediment

↓ = Record low air temperature

 = Monthly Averages

Total AF

48.3 46.5

RDB

54.8 50.2

LWS

45.2 -

DGC3

42.0

Mean Daily Air 

Temperatures (°F)

RDD

47.7

Total CFS

46.6

Mean Daily 

Release (CFS)

NFH

43.3

Mean Daily Water Temperatures (°F)

45.1

BND IGO

48.9

BSF

50.5 55.3

45.7 46.8 47.1 47.4 48.2 47.9

D

A

T

E

46.6 46.3

SAC CCR 2 TCD1 SHD SPP1 KWK

48.3 47.6 47.7 49.6 52.9

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 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

35

42

49

56

63

70

77

84

91

98

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

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 DGC2 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

2 DGC reporting incorrect water temperatures due to probe 

being buried in fine sediment (no data)

Station Details Water Right Temperature Control Points

28

35

42

49

56

63

70

77

84

91

98

40

41

42

43

44

45

46

47

48

49

50

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 04/27/2023 at 1404

Latest Profile Date: 04/26/2023

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
Apr-26

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

1998 -101 -203 -368 224 -3 -7 -13 8

1999 49 -113 -665 276 2 -4 -24 10

2000 -544 -957 -1565 1022 -17 -31 -55 34

2001 -616 -680 -903 733 -19 -22 -32 24

2002 -395 -522 -958 625 -12 -17 -34 21

2003 -399 -810 -1577 929 -12 -26 -56 31

2004 -669 -766 -1244 893 -20 -25 -44 30

2005 -585 -775 -1673 1011 -18 -25 -59 34

2006 205 183 -1004 464 6 6 -36 16

2007 -584 -627 -1008 740 -18 -20 -36 25

2008 -1314 -1465 -1405 1395 -40 -47 -50 46

2009 -1381 -1421 -1372 1391 -42 -46 -49 45

2010 -77 -522 -910 503 -2 -17 -32 17

2011 48 51 -593 231 1 2 -21 8

2012 191 -272 -951 472 6 -9 -34 16

2013 -669 -776 -1154 867 -20 -25 -41 29

2014 -1738 -1874 -2052 1888 -53 -60 -73 62

2015 -1718 -1931 -2542 2064 -52 -62 -90 68

2016 -216 -432 -1780 809 -7 -14 -63 28

2017 -170 -562 -860 530 -5 -18 -30 18

2018 -277 -570 -1623 823 -8 -18 -57 28

2019 -105 -415 -1172 564 -3 -13 -41 19

2020 -502 -1148 -1893 1181 -15 -37 -67 40

2021 -1825 -1862 -2028 1905 -56 -60 -72 62

2022 -2144 -2082 -1946 2057 -65 -67 -69 67

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 04/19/2023 at 1636

Latest Profile Date: 04/12/2023

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
Apr-13

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

2000 1188 1069 682 980 129 116 74 106

2001 656 589 430 558 71 64 47 61

2002 776 699 594 690 84 76 64 75

2003 1161 953 526 880 126 103 57 95

2004 890 750 598 746 97 81 65 81

2005 813 396 188 466 88 43 20 51

2006 1316 1316 1022 1218 143 143 111 132

2007 843 637 542 674 91 69 59 73

2008 698 676 323 566 76 73 35 61

2009 296 153 -257 235 32 17 -28 26

2010 469 393 137 333 51 43 15 36

2011 1166 1120 942 1076 127 122 102 117

2012 1038 936 875 950 113 102 95 103

2013 1145 809 474 809 124 88 51 88

2014 214 152 -111 159 23 17 -12 17

2015 -29 -126 -207 120 -3 -14 -22 13

2016 305 231 118 218 33 25 13 24

2017 1115 965 796 959 121 105 86 104

2018 838 660 498 665 91 72 54 72

2019 1160 1154 807 1040 126 125 88 113

2020 888 665 295 616 96 72 32 67

2021 150 46 -125 107 16 5 -14 12

2022 -261 -356 -479 365 -28 -39 -52 40

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 04/19/2023 at 1633

Latest Profile Date: 04/11/2023

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
Apr-11

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

2000 -10.3 -10.3 -69.5 30.0 -4.4 -4.4 -29.9 12.9

2001 -17.0 -34.4 -72.7 41.4 -7.3 -14.8 -31.2 17.8

2002 -15.5 -50.8 -66.2 44.2 -6.7 -21.8 -28.5 19.0

2003 -17.2 -17.2 -17.2 17.2 -7.4 -7.4 -7.4 7.4

2004 -19.1 -35.0 -60.9 38.3 -8.2 -15.0 -26.2 16.5

2005 -9.3 -9.3 -9.3 9.3 -4.0 -4.0 -4.0 4.0

2006 -14.8 -14.8 -14.8 14.8 -6.4 -6.4 -6.4 6.4

2007 -28.6 -31.4 -43.7 34.6 -12.3 -13.5 -18.8 14.9

2008 -14.9 -14.9 -17.9 15.9 -6.4 -6.4 -7.7 6.8

2009 -33.0 -36.2 -39.0 36.1 -14.2 -15.6 -16.8 15.5

2010 -12.2 -12.2 -12.2 12.2 -5.2 -5.2 -5.2 5.2

2011 -1.8 -1.8 -6.9 3.5 -0.8 -0.8 -3.0 1.5

2012 -66.7 -70.6 -78.3 71.9 -28.7 -30.3 -33.7 30.9

2013 -41.1 -41.5 -48.6 43.7 -17.7 -17.8 -20.9 18.8

2014 -24.2 -28.8 -43.9 32.3 -10.4 -12.4 -18.9 13.9

2015 -32.4 -32.8 -33.7 33.0 -13.9 -14.1 -14.5 14.2

2016 -6.4 -13.7 -30.7 17.0 -2.8 -5.9 -13.2 7.3

2017 -9.7 -22.1 -32.7 21.5 -4.2 -9.5 -14.1 9.2

2018 -34.5 -35.1 -36.0 35.2 -14.8 -15.1 -15.5 15.1

2019 -23.4 -23.8 -24.2 23.8 -10.1 -10.2 -10.4 10.2

2020 -12.1 -12.1 -51.6 25.3 -5.2 -5.2 -22.2 10.9

2021 -17.6 -17.6 -83.4 39.5 -7.6 -7.6 -35.8 17.0

2022 -11.6 -11.6 -11.6 11.6 -5.0 -5.0 -5.0 5.0

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