Report Generated 05/02/2022 at 1001

Page Description

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

3 - Redding 10-Day Forecasted Air Temperatures

4 - Sacramento River Mean Daily Water Temperature, Air Temperature and 10-Day Forecasted Air Temperature Plot

- Water Temperature Measuring Station Details

- Temperature Control Point Details

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 - 2022
Shasta 

Generation 

Spring 

Creek P.P.

Keswick 

Total BSF RDB

Mar 2961 74 3246 56.2 57.8

04/01 51.9 50.5 49.7 51.6 52.2 53.1 54.9 56.2 57.1 50.6 49.6 52.3 53.6 3124 75 3259 68.0 61.5 63.5

04/02 52.2 50.2 49.7 52.1 52.5 53.4 55.3 56.9 57.6 50.7 49.5 52.5 ? 53.9 3134 75 3263 63.5 61.2 63.3

04/03 51.1 49.9 49.2 52.3 52.3 53.0 54.5 55.9 56.9 49.9 49.6 51.5 53.0 2609 202 3256 59.0 56.7 62.0

04/04 50.1 49.3 49.3 51.8 52.1 52.8 54.1 54.9 55.8 50.1 50.1 51.0 52.8 2620 331 3267 62.5 59.6 61.7

04/05 51.3 49.7 49.4 51.9 52.2 52.8 53.9 54.9 55.5 50.3 50.4 51.2 52.1 2774 270 3253 56.5 56.1 60.0

04/06 52.9 51.8 49.9 51.8 52.5 53.5 55.0 56.2 56.5 50.8 50.5 52.2 53.4 2875 76 3255 72.5 65.5 68.1

04/07 52.7 50.9 50.0 51.6 52.4 53.6 55.9 57.7 58.4 51.4 50.0 54.0 ? 55.3 3068 75 3255 68.0 64.9 68.9

04/08 51.7 51.0 50.0 52.6 53.0 54.1 56.3 58.5 59.4 51.6 50.0 54.8 56.3 3222 182 3255 69.0 66.4 69.4

04/09 53.1 50.1 50.2 53.3 53.5 54.1 55.6 57.0 58.0 50.9 49.8 53.2 54.5 2493 277 3255 64.0 61.8 62.8

04/10 53.0 51.1 50.1 52.9 53.4 54.1 55.1 55.7 56.3 50.5 50.1 51.3 52.7 2704 188 3258 61.0 57.9 60.0

04/11 52.2 50.6 50.7 52.8 53.0 53.7 55.5 56.3 56.6 50.4 49.7 50.9 51.2 2975 154 3267 52.0 52.1 53.3

04/12 51.5 50.4 51.1 52.8 52.9 53.1 53.7 54.6 55.6 49.6 49.8 48.7 49.7 2491 477 3264 ↓ 46.0 45.5 48.3

04/13 50.6 49.9 50.8 52.2 52.2 52.3 52.8 53.7 54.1 49.5 49.6 48.7 49.3 2502 74 3254 49.5 50.3 50.1

04/14 51.0 50.1 50.4 51.7 51.8 51.9 52.2 52.6 52.7 49.7 49.2 48.7 49.3 2779 77 3249 52.0 52.0 52.1

04/15 51.4 50.9 50.4 51.4 51.7 52.3 52.3 53.0 53.4 50.4 48.5 48.6 48.8 2536 77 3238 53.0 51.6 53.3

04/16 51.8 ? 51.7 50.7 51.5 51.9 52.9 53.7 54.4 54.4 51.6 48.5 49.6 50.3 3191 77 3235 57.5 53.5 54.8

04/17 51.7 ! - 50.9 51.7 52.4 53.4 54.7 55.6 56.0 51.6 48.7 50.3 51.7 3476 77 3238 58.0 54.6 56.2

04/18 51.9 51.1 50.8 52.3 52.2 52.6 54.0 55.6 56.2 50.2 48.5 48.9 50.2 3031 77 3233 53.0 52.3 53.8

04/19 51.8 50.9 50.9 52.1 52.2 52.8 53.7 54.9 55.6 50.7 48.8 48.3 48.7 3312 77 3274 56.5 55.5 57.1

04/20 52.0 51.2 51.1 52.0 51.9 52.1 52.6 53.5 54.4 49.9 48.3 48.1 48.8 3042 77 3278 53.0 52.7 53.1

04/21 52.1 50.7 ? 50.9 51.7 52.1 52.8 53.2 54.0 54.3 51.2 46.6 47.2 48.4 3000 77 3271 55.5 53.8 54.6

04/22 52.4 51.6 51.2 51.8 52.7 53.6 54.5 55.3 55.8 51.8 46.9 47.2 48.5 2780 77 3289 57.5 55.0 54.8

04/23 52.9 52.0 51.4 52.2 53.0 54.1 55.8 57.0 57.4 52.0 47.5 47.9 49.3 3532 77 3263 58.5 57.6 58.8

04/24 53.3 50.8 51.3 52.6 53.5 54.6 56.6 58.1 58.8 52.4 48.2 49.2 ? 50.5 2296 77 3261 63.5 60.5 62.7

04/25 52.8 51.7 51.2 53.0 53.7 54.7 57.2 59.1 59.9 52.6 48.4 49.7 51.4 3336 77 3265 65.0 62.1 63.9

04/26 52.7 52.0 51.2 53.2 54.1 55.4 58.0 60.0 60.9 53.1 48.9 50.0 51.5 3389 77 3258 65.5 63.9 65.9

04/27 52.7 52.0 51.5 53.2 54.1 55.2 57.7 59.9 61.1 52.7 49.4 50.3 ? 51.5 2882 76 3265 61.5 58.8 62.7

04/28 52.2 51.6 51.4 53.4 54.2 55.3 58.0 59.6 60.6 52.5 49.6 50.5 ? 52.2 2584 76 3258 61.5 59.6 59.6

04/29 53.0 51.6 51.5 53.7 54.6 55.6 57.3 59.1 ? 60.4 52.6 49.7 50.2 51.6 3105 76 3259 62.5 59.0 61.3

04/30 52.9 51.4 51.5 53.7 54.6 56.1 58.8 60.4 ? 61.1 53.2 49.5 51.0 53.0 3038 84 3260 68.5 65.6 67.2

-

Apr 2930 126 3259 57.6 59.4

87900 3769 97755

Legend Notes 174346 7476 193893

? = 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

52.1 50.9 50.6 52.8 53.6 55.1

D

A

T

E

50.0 49.2

SAC CCR 2 TCD1 SHD SPP1 KWK

49.3 50.2 50.6 51.2 52.6 53.8

Mean Daily Air 

Temperatures (°F)

RDD

58.7

Total CFS

51.5 59.8

Mean Daily 

Release (CFS)

NFH

50.2

Mean Daily Water Temperatures (°F)

48.7

BND IGO

52.4

BSF

56.3

Total AF

54.5 49.2

RDB

57.0 51.1

LWS

49.1 50.3

DGC

49.2

2
↓ ↑ Avg ↓ ↑ Avg ↓ ↑ Avg ↓ ↑ Avg ↓ ↑ Avg ↓ ↑ Avg ↓ ↑ Avg ↓ ↑ Avg ↓ ↑ Avg ↓ ↑ Avg ↓ ↑ Avg ↓ ↑ Avg

04/01 51 76 63.5 57 81 69.0 45 80 62.5 44 78 61.0 46 70 58.0 43 76 59.5 47 86 66.5 49 92 70.5 53 86 69.5 53 86 69.5 52 75 63.5 43 67 55.0

04/02 55 81 68.0 49 80 64.5 43 77 60.0 46 69 57.5 42 74 58.0 46 87 66.5 49 91 70.0 52 91 71.5 54 80 67.0 44 68 56.0 46 71 58.5 44 73 58.5

04/03 47 80 63.5 41 79 60.0 47 69 58.0 42 77 59.5 46 90 68.0 51 93 72.0 54 89 71.5 50 79 64.5 56 82 69.0 49 70 59.5 49 71 60.0 46 73 59.5

04/04 40 78 59.0 55 68 61.5 40 74 57.0 46 89 67.5 51 93 72.0 54 90 72.0 52 83 67.5 44 70 57.0 46 66 56.0 43 72 57.5 45 75 60.0 49 76 62.5

04/05 52 73 62.5 42 73 57.5 47 89 68.0 51 94 72.5 54 90 72.0 50 78 64.0 42 71 56.5 39 65 52.0 40 66 53.0 42 65 53.5 43 72 57.5 51 77 64.0

04/06 40 73 56.5 58 91 74.5 54 92 73.0 56 87 71.5 48 75 61.5 41 70 55.5 38 68 53.0 37 70 53.5 50 71 60.5 48 78 63.0 48 80 64.0 53 79 66.0

04/07 56 89 72.5 48 91 69.5 53 87 70.0 47 73 60.0 44 69 56.5 42 62 52.0 37 66 51.5 36 68 52.0 43 69 56.0 46 69 57.5 46 71 58.5 50 74 62.0

04/08 45 91 68.0 52 86 69.0 48 73 60.5 42 69 55.5 40 59 49.5 36 66 51.0 37 65 51.0 43 64 53.5 45 68 56.5 45 75 60.0 46 78 62.0 51 77 64.0

04/09 50 88 69.0 54 72 63.0 43 71 57.0 41 58 49.5 33 62 47.5 34 63 48.5 42 65 53.5 41 70 55.5 47 77 62.0 48 82 65.0 50 80 65.0 51 75 63.0

04/10 54 74 64.0 50 71 60.5 44 58 51.0 32 60 46.0 35 59 47.0 42 58 50.0 37 62 49.5 37 65 51.0 45 71 58.0 46 79 62.5 48 76 62.0 51 78 64.5

04/11 50 72 61.0 52 57 54.5 30 59 44.5 35 57 46.0 41 58 49.5 38 62 50.0 39 63 51.0 39 71 55.0 45 65 55.0 46 65 55.5 46 74 60.0 51 75 63.0

04/12 46 58 52.0 32 60 46.0 33 58 45.5 41 57 49.0 42 64 53.0 45 62 53.5 37 70 53.5 41 70 55.5 43 71 57.0 44 72 58.0 46 75 60.5 50 74 62.0

04/13 31 61 46.0 43 58 50.5 41 58 49.5 42 63 52.5 45 64 54.5 40 70 55.0 41 67 54.0 42 67 54.5 48 72 60.0 51 72 61.5 49 74 61.5 50 73 61.5

04/14 40 59 49.5 47 54 50.5 35 60 47.5 43 65 54.0 39 71 55.0 40 65 52.5 44 65 54.5 44 66 55.0 49 69 59.0 46 72 59.0 48 77 62.5 53 80 66.5

04/15 46 58 52.0 43 62 52.5 42 63 52.5 42 69 55.5 40 67 53.5 44 65 54.5 40 68 54.0 46 63 54.5 47 69 58.0 48 77 62.5 51 80 65.5 53 81 67.0

04/16 43 63 53.0 47 64 55.5 41 68 54.5 40 66 53.0 44 64 54.0 42 62 52.0 44 59 51.5 42 65 53.5 46 72 59.0 49 80 64.5 51 81 66.0 53 80 66.5

04/17 47 68 57.5 45 68 56.5 38 66 52.0 44 64 54.0 41 60 50.5 44 58 51.0 42 65 53.5 42 73 57.5 50 77 63.5 52 80 66.0 51 82 66.5 50 74 62.0

04/18 44 72 58.0 40 66 53.0 44 64 54.0 42 59 50.5 44 59 51.5 41 65 53.0 41 71 56.0 44 76 60.0 51 81 66.0 51 81 66.0 52 81 66.5 52 81 66.5

04/19 40 66 53.0 48 64 56.0 39 58 48.5 43 59 51.0 41 64 52.5 40 73 56.5 43 78 60.5 47 78 62.5 54 82 68.0 52 83 67.5 51 83 67.0 54 82 68.0

04/20 48 65 56.5 47 57 52.0 43 60 51.5 42 66 54.0 40 74 57.0 44 78 61.0 47 78 62.5 48 73 60.5 48 76 62.0 46 81 63.5 49 81 65.0 52 81 66.5

04/21 46 60 53.0 47 61 54.0 40 65 52.5 40 74 57.0 43 80 61.5 48 79 63.5 49 74 61.5 43 73 58.0 50 78 64.0 48 81 64.5 51 84 67.5 53 79 66.0

04/22 46 65 55.5 48 66 57.0 40 75 57.5 43 81 62.0 48 80 64.0 49 72 60.5 43 72 57.5 43 69 56.0 45 73 59.0 48 81 64.5 51 82 66.5 54 80 67.0

04/23 48 67 57.5 42 75 58.5 43 81 62.0 47 79 63.0 50 76 63.0 44 75 59.5 44 73 58.5 43 75 59.0 53 84 68.5 55 85 70.0 55 84 69.5 53 77 65.0

04/24 42 75 58.5 47 81 64.0 48 79 63.5 50 73 61.5 44 75 59.5 46 72 59.0 43 75 59.0 46 79 62.5 53 84 68.5 55 87 71.0 55 85 70.0 52 75 63.5

04/25 47 80 63.5 51 79 65.0 51 75 63.0 44 75 59.5 46 71 58.5 43 75 59.0 47 81 64.0 48 78 63.0 56 85 70.5 55 88 71.5 55 83 69.0 54 79 66.5

04/26 50 80 65.0 57 75 66.0 43 76 59.5 45 70 57.5 42 76 59.0 49 81 65.0 50 82 66.0 50 77 63.5 52 82 67.0 53 89 71.0 54 85 69.5 53 78 65.5

04/27 53 78 65.5 54 75 64.5 46 69 57.5 40 76 58.0 49 78 63.5 47 79 63.0 48 75 61.5 46 82 64.0 56 88 72.0 55 84 69.5 56 81 68.5 56 82 69.0

04/28 48 75 61.5 53 70 61.5 41 78 59.5 50 77 63.5 47 80 63.5 49 72 60.5 46 83 64.5 50 87 68.5 56 86 71.0 55 86 70.5 57 87 72.0 57 86 71.5

04/29 52 71 61.5 46 78 62.0 51 77 64.0 47 81 64.0 48 75 61.5 47 83 65.0 52 89 70.5 53 75 64.0 48 75 61.5 49 78 63.5 53 79 66.0 51 78 64.5

04/30 46 79 62.5 51 76 63.5 48 81 64.5 47 72 59.5 45 82 63.5 51 89 70.0 53 78 65.5 49 77 63.0 54 83 68.5 57 89 73.0 57 90 73.5 59 89 74.0

-

Web Links Legend

10-Day Min/Max Forecast NR = Forecasted temperatures not recorded

Previous Days Min/Max Actuals 100 = Previous day actual temperatures in red and bolded indicate a record temperature for that date

D

A

T

E

Forecasted

4 Days 5 Days 6 Days

Actual

Previous Day Current Day 1 Day 2 Days 3 Days 7 Days 9 Days 10 Days

Redding (RDD) Daily Air Temperatures (°F)

8 Days

3
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 56 09/21/2020 04/18/2021

SHD Sacramento River 0.3 miles downstream of Shasta Power Plant Click Here Sacramento CCR 60 04/18/2021 05/17/2021

SPP N/A Spring Creek Power Plant N/A Sacramento SAC 57 05/17/2021 06/15/2021

KWK Sacramento River 0.8 miles downstream of Keswick Dam Click Here Sacramento SAC 55 06/15/2021 TBD

SAC Sacramento River 4.8 miles downstream of Keswick Dam Click Here Trinity DGC 56 09/15/2021 10/01/2021

CCR Sacramento River 9.7 miles downstream of Keswick Dam Click Here Trinity NFH 56 10/01/2021 12/31/2021

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

RDB Sacramento River 58 miles downstream of Keswick Dam Click Here

IGO Clear Creek 7.3 miles downstream of Whiskeytown Dam Click Here

LWS Trinity River 1.1 miles downstream of Lewiston Dam Click Here Notes

DGC Trinity River 19 miles downstream of Lewiston Dam Click Here

NFH Trinity River 38 miles downstream of Lewiston Dam Click Here 1 Distances are approximate

Station Details Water Right Temperature Control Points

40

44

48

52

56

60

64

68

72

76

80

49

50

51

52

53

54

55

56

57

58

59

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)

Mean Daily Temperatures

TCD KWK SAC CCR BSF RDD (Air)

4
Updated 04/28/2022 at 1505

Latest Profile Date: 04/27/2022

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

2022

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 - 2022

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

2022 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 (1998-2021)

2022 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 (1998-2021)

2022 95 90 75 50 25 10 5
Apr-27

2022 ≤52° ≤50° ≤48° Abs. Avg. ≤52° ≤50° ≤48° Abs. Avg.

1998 2042 1910 1611 1854 183 190 186 186

1999 2189 1979 1291 1820 196 197 149 181

2000 1627 1142 387 1052 146 113 45 101

2001 1536 1414 1043 1331 138 140 120 133

2002 1767 1574 989 1443 159 156 114 143

2003 1768 1288 371 1143 159 128 43 110

2004 1476 1314 723 1171 133 131 83 115

2005 1582 1328 283 1065 142 132 33 102

2006 2312 2239 952 1834 208 222 110 180

2007 1570 1468 939 1325 141 146 108 132

2008 810 631 553 665 73 63 64 66

2009 795 688 581 688 71 68 67 69

2010 2062 1577 1049 1563 185 157 121 154

2011 2186 2121 1378 1895 196 211 159 189

2012 2317 1845 1018 1727 208 183 117 170

2013 1482 1315 790 1196 133 131 91 118

2014 425 229 -100 252 38 23 -12 24

2015 440 156 -602 399 39 15 -69 41

2016 1948 1665 182 1265 175 165 21 120

2017 2001 1519 1064 1528 180 151 123 151

2018 1878 1527 335 1247 169 152 39 120

2019 2060 1670 778 1503 185 166 90 147

2020 1644 936 54 878 148 93 6 82

2021 333 234 -58 208 30 23 -7 20

2022 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 04/28/2022 at 1509

Latest Profile Date: 04/25/2022

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

2022

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 - 2022

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

2022 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 (2000-2021)

2022 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 (2000-2021)

2022 95 90 75 50 25 10 5
Apr-25

2022 ≤52° ≤50° ≤48° Abs. Avg. ≤52° ≤50° ≤48° Abs. Avg.

2000 1496 1528 1355 1460 240 307 401 316

2001 901 954 899 918 145 191 266 201

2002 971 961 1017 983 156 193 301 217

2003 1506 1286 1141 1311 242 258 337 279

2004 1151 1113 1087 1117 185 223 321 243

2005 1093 776 687 852 176 156 203 178

2006 1595 1702 1570 1622 256 342 464 354

2007 1021 910 1001 977 164 183 296 214

2008 1030 1117 688 945 165 224 203 198

2009 528 495 248 424 85 99 73 86

2010 833 852 660 782 134 171 195 167

2011 1363 1362 1368 1364 219 273 404 299

2012 1340 1327 1405 1357 215 266 415 299

2013 1026 968 876 957 165 194 259 206

2014 396 453 418 422 64 91 123 93

2015 209 212 282 234 34 43 83 53

2016 502 554 604 553 81 111 179 123

2017 1353 1329 1292 1325 217 267 382 289

2018 998 978 969 981 160 196 286 214

2019 1389 1472 1318 1393 223 296 390 303

2020 1032 974 846 950 166 196 250 204

2021 351 390 395 379 56 78 117 84

2022 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 04/28/2022 at 1518

Latest Profile Date: 04/12/2022

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

2022

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 - 2022

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

2022 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 (2000-2021)

2022 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 (2000-2021)

2022 95 90 75 50 25 10 5
Apr-12

2022 ≤60° ≤58° ≤56° Abs. Avg. ≤60° ≤58° ≤56° Abs. Avg.

2000 1.6 1.6 -59.7 21.0 0.7 0.7 -27.0 9.5

2001 -4.8 -23.1 -63.2 30.4 -2.1 -10.4 -28.6 13.7

2002 -3.7 -40.7 -56.8 33.8 -1.7 -18.4 -25.7 15.2

2003 -5.1 -5.1 -5.1 5.1 -2.3 -2.3 -2.3 2.3

2004 -7.7 -23.9 -50.6 27.4 -3.5 -10.8 -22.8 12.4

2005 2.5 2.5 2.5 2.5 1.1 1.1 1.1 1.1

2006 -2.9 -2.9 -2.9 2.9 -1.3 -1.3 -1.3 1.3

2007 -18.2 -21.6 -34.2 24.6 -8.2 -9.7 -15.4 11.1

2008 -2.7 -2.7 -6.2 3.8 -1.2 -1.2 -2.8 1.7

2009 -23.2 -26.8 -30.0 26.7 -10.5 -12.1 -13.5 12.0

2010 -0.7 -0.7 -0.7 0.7 -0.3 -0.3 -0.3 0.3

2011 9.3 9.3 2.9 7.2 4.2 4.2 1.3 3.3

2012 -56.0 -59.9 -67.8 61.2 -25.3 -27.1 -30.6 27.7

2013 -31.9 -32.3 -39.3 34.5 -14.4 -14.6 -17.7 15.6

2014 -11.9 -21.0 -35.7 22.9 -5.4 -9.5 -16.1 10.3

2015 -24.5 -25.1 -26.5 25.4 -11.1 -11.3 -12.0 11.4

2016 3.4 -5.3 -22.8 10.5 1.5 -2.4 -10.3 4.7

2017 2.0 -12.5 -24.9 13.1 0.9 -5.6 -11.2 5.9

2018 -24.3 -25.0 -26.1 25.1 -11.0 -11.3 -11.8 11.3

2019 -14.0 -14.8 -15.5 14.8 -6.3 -6.7 -7.0 6.7

2020 -0.4 -0.4 -41.1 14.0 -0.2 -0.2 -18.6 6.3

2021 -5.9 -5.9 -75.4 29.1 -2.7 -2.7 -34.0 13.1

2022 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