Report Generated 11/02/2020 at 0727

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

October - 2020
Shasta 

Generation 

Spring 

Creek P.P.

Keswick 

Total BSF RDB

Sep 5097 1612 7075 71.7 74.3

10/01 53.7 ? 52.7 54.3 53.6 54.1 54.6 55.7 56.6 57.4 58.1 56.1 ? 48.9 52.5 55.1 4509 1935 6863 ↑ 87.0 73.2 78.0

10/02 53.4 52.5 ? 54.3 53.7 54.1 54.6 55.5 56.5 57.3 58.2 55.7 48.9 52.1 55.0 5104 1672 6853 78.5 69.1 72.8

10/03 53.5 ? 52.9 54.2 53.7 54.2 54.6 55.5 56.4 57.1 57.7 55.8 49.1 52.0 55.1 4205 1816 6850 79.0 68.7 70.7

10/04 53.5 52.9 54.2 53.8 54.1 54.4 55.1 56.0 56.7 57.5 55.1 49.1 51.7 54.4 5194 1833 6827 73.0 63.9 67.9

10/05 53.6 52.9 54.5 53.6 54.2 54.6 55.3 56.0 56.6 57.1 55.2 49.0 51.1 53.8 5737 328 6649 73.0 64.0 69.4

10/06 53.9 53.3 54.4 53.6 54.0 54.4 55.2 56.0 56.6 57.3 54.9 48.9 51.1 53.6 5651 527 6651 70.0 62.6 68.1

10/07 54.5 ? 53.8 54.4 53.7 54.0 54.4 55.1 55.9 56.6 57.2 54.8 49.0 51.0 53.4 5931 380 6650 69.0 62.0 66.9

10/08 54.6 53.8 54.4 54.2 54.3 54.5 54.9 55.5 56.2 56.7 54.7 49.2 51.2 53.4 5609 716 6689 67.5 59.1 61.1

10/09 54.8 ? 54.3 54.4 54.3 54.6 55.1 55.5 ? 56.0 56.5 56.6 54.8 49.4 51.2 53.5 4899 658 6056 63.5 58.7 60.4

10/10 54.9 54.4 54.5 54.6 54.6 55.0 55.6 56.3 57.0 57.4 54.8 49.6 51.8 53.9 5298 445 6027 64.0 60.0 61.9

10/11 54.6 54.4 54.5 54.6 54.9 55.5 55.8 56.3 56.8 57.1 54.9 49.6 51.1 53.8 5262 674 6045 67.0 60.4 65.8

10/12 ? 54.6 ? 54.2 ? 54.6 54.8 55.1 55.6 56.0 56.7 57.2 57.6 55.6 49.9 52.0 54.2 5202 774 6044 68.0 61.8 66.7

10/13 54.8 54.4 54.7 54.7 55.1 55.8 56.5 57.3 57.8 58.2 56.0 50.0 53.0 55.3 5264 674 6054 72.0 65.8 70.8

10/14 54.4 54.2 54.7 55.0 55.4 56.0 56.8 57.6 58.2 58.8 56.1 50.1 53.6 56.3 5017 677 6043 73.0 69.8 75.8

10/15 53.4 53.4 54.7 55.0 55.4 56.0 56.6 57.4 58.1 58.6 55.6 50.3 52.7 55.6 4744 677 6044 82.5 79.2 80.7

10/16 53.2 ? 53.1 54.7 54.8 55.4 56.1 ? 56.9 57.6 58.2 58.7 55.9 50.4 52.7 55.0 4600 840 5815 ↑ 84.5 77.1 81.1

10/17 53.3 ? 53.0 54.8 54.1 54.9 55.6 56.7 57.7 58.5 59.2 55.6 50.4 53.1 55.3 4293 835 5611 83.5 74.7 77.7

10/18 53.5 53.2 54.8 53.8 54.5 55.1 56.2 57.2 58.0 59.0 55.5 50.3 53.3 55.8 4385 748 5410 ↑ 76.0 67.8 71.5

10/19 53.7 53.3 54.9 53.9 54.4 55.0 55.8 56.6 57.3 58.2 55.4 50.3 52.9 55.8 4068 825 5213 72.5 64.9 69.2

10/20 53.8 53.6 54.9 54.0 54.6 55.3 56.0 56.8 57.3 57.8 55.4 50.4 52.4 55.2 4053 986 5040 77.0 68.7 74.3

10/21 53.6 53.2 54.9 54.1 54.7 55.4 56.4 57.3 58.0 58.5 55.6 50.5 52.6 55.0 3930 713 5076 79.5 73.3 77.0

10/22 54.3 53.8 55.0 54.0 54.5 54.6 55.0 55.7 56.3 57.0 ! - 50.2 51.8 54.2 3695 676 5012 67.5 66.5 68.2

10/23 53.9 53.9 54.9 53.7 54.1 54.4 54.5 54.9 55.2 55.5 54.0 50.0 50.0 52.5 3824 687 5006 67.0 62.2 63.9

10/24 54.1 52.7 55.0 53.8 54.1 54.3 54.5 54.9 55.2 55.5 53.7 50.1 50.0 51.8 6343 530 5009 59.5 54.6 57.0

10/25 54.4 53.2 55.1 53.6 53.9 53.8 53.8 54.1 54.5 54.7 53.1 49.8 50.0 51.8 4309 753 5012 54.5 53.5 55.2

10/26 54.1 ! - 56.3 53.4 53.5 53.3 52.5 52.5 52.6 52.6 53.0 49.4 47.6 49.6 4398 17 5012 63.5 58.4 58.6

10/27 54.0 ? 53.4 55.6 53.6 53.7 54.0 53.8 53.9 54.0 53.5 53.7 49.4 47.6 48.6 5403 46 5013 69.0 63.0 63.3

10/28 54.4 54.0 55.0 53.5 53.8 54.1 54.2 54.5 54.7 54.7 53.7 49.2 48.1 48.8 4521 627 5009 60.0 53.7 56.0

10/29 54.3 54.1 54.9 53.8 53.9 54.1 54.0 54.2 54.5 54.7 53.5 ? 48.8 48.2 ? 49.1 4159 688 5005 58.5 52.6 56.5

10/30 54.5 54.3 54.9 54.0 54.0 54.4 54.2 54.3 54.5 54.5 53.4 48.6 48.0 49.1 4582 440 5017 60.0 52.5 57.3

10/31 54.6 54.5 54.9 54.1 54.1 54.5 54.4 54.6 54.8 54.8 53.7 48.6 48.2 49.3 4506 454 5005 63.0 55.1 59.7

Oct 4797 763 5762 63.8 67.2

148695 23651 178610

Legend Notes 294930 46911 354266

? = 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 IGO thermistor vandalized and out of commission as of 7/29/2020. Data is from nearby

↓ = Record low air temperature temperature logger. A bias has been applied to better represent the IGO location.

 = Monthly Averages

54.8

55.1

55.3

D

A

T

E

51.9 50.7

CCR2 TCD SAC 1 SHD SPP1 KWK BSF

54.1 53.6 54.8 54.0 54.4

55.6 52.8 53.4 53.9 56.3 57.1

Mean Daily 

Release (CFS)

NFH

57.5

Mean Daily Water Temperatures (°F)

49.6

Mean Daily Air 

Temperatures (°F)

RDD

78.1

Total CFS

55.9 53.3 70.4

IGO3

56.4

Total AF

58.0 56.9

RDB

56.9 54.8

LWS

49.6 51.1

DGC

53.7

JLF BND

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

10/01 57 103 80.0 69 103 86.0 61 100 80.5 61 100 80.5 59 90 74.5 55 92 73.5 56 93 74.5 56 89 72.5 54 85 69.5 56 76 66.0 56 72 64.0 53 77 65.0

10/02 68 106 87.0 60 103 81.5 61 101 81.0 59 92 75.5 58 94 76.0 56 94 75.0 55 90 72.5 52 83 67.5 54 78 66.0 57 70 63.5 52 75 63.5 51 76 63.5

10/03 57 100 78.5 60 99 79.5 56 93 74.5 54 92 73.0 54 93 73.5 52 88 70.0 52 83 67.5 51 80 65.5 56 72 64.0 50 75 62.5 51 73 62.0 49 73 61.0

10/04 58 100 79.0 56 96 76.0 53 95 74.0 53 94 73.5 53 88 70.5 52 76 64.0 51 72 61.5 54 69 61.5 53 75 64.0 49 72 60.5 53 77 65.0 49 81 65.0

10/05 56 90 73.0 51 93 72.0 51 92 71.5 52 89 70.5 51 78 64.5 51 70 60.5 52 69 60.5 47 73 60.0 53 84 68.5 54 85 69.5 54 86 70.0 53 84 68.5

10/06 51 95 73.0 49 93 71.0 50 90 70.0 51 80 65.5 51 71 61.0 51 67 59.0 46 70 58.0 49 77 63.0 55 89 72.0 56 84 70.0 52 81 66.5 48 83 65.5

10/07 47 93 70.0 50 91 70.5 50 81 65.5 49 78 63.5 51 68 59.5 45 72 58.5 48 79 63.5 50 82 66.0 51 86 68.5 54 85 69.5 50 83 66.5 50 83 66.5

10/08 48 90 69.0 53 79 66.0 48 78 63.0 52 73 62.5 48 77 62.5 50 85 67.5 51 86 68.5 52 87 69.5 61 93 77.0 58 89 73.5 53 86 69.5 52 81 66.5

10/09 52 83 67.5 49 79 64.0 55 70 62.5 50 77 63.5 47 85 66.0 49 87 68.0 51 87 69.0 54 88 71.0 59 92 75.5 57 89 73.0 54 85 69.5 54 80 67.0

10/10 48 79 63.5 58 70 64.0 45 77 61.0 46 83 64.5 51 89 70.0 55 90 72.5 56 92 74.0 57 93 75.0 56 93 74.5 58 82 70.0 48 72 60.0 47 71 59.0

10/11 56 72 64.0 53 79 66.0 46 83 64.5 49 87 68.0 52 87 69.5 57 91 74.0 55 91 73.0 53 91 72.0 54 93 73.5 54 85 69.5 51 80 65.5 51 81 66.0

10/12 52 82 67.0 48 84 66.0 49 88 68.5 53 87 70.0 58 92 75.0 57 92 74.5 53 90 71.5 51 85 68.0 52 88 70.0 53 83 68.0 50 78 64.0 50 76 63.0

10/13 47 89 68.0 53 90 71.5 53 90 71.5 56 91 73.5 57 93 75.0 55 91 73.0 52 84 68.0 49 82 65.5 52 85 68.5 51 82 66.5 45 80 62.5 46 78 62.0

10/14 53 91 72.0 59 91 75.0 58 91 74.5 57 93 75.0 57 92 74.5 52 87 69.5 50 85 67.5 49 83 66.0 52 89 70.5 53 81 67.0 48 78 63.0 51 77 64.0

10/15 56 90 73.0 72 93 82.5 58 94 76.0 57 93 75.0 52 87 69.5 49 83 66.0 50 83 66.5 47 79 63.0 51 88 69.5 52 80 66.0 43 79 61.0 45 77 61.0

10/16 72 93 82.5 75 97 86.0 58 93 75.5 54 89 71.5 52 88 70.0 52 87 69.5 52 85 68.5 52 82 67.0 51 86 68.5 51 83 67.0 49 78 63.5 49 76 62.5

10/17 71 98 84.5 73 97 85.0 59 93 76.0 53 90 71.5 54 90 72.0 56 89 72.5 55 85 70.0 49 83 66.0 47 81 64.0 49 74 61.5 40 76 58.0 42 76 59.0

10/18 69 98 83.5 58 95 76.5 55 92 73.5 56 91 73.5 55 87 71.0 51 80 65.5 46 78 62.0 46 73 59.5 48 79 63.5 46 75 60.5 42 78 60.0 45 76 60.5

10/19 57 95 76.0 61 89 75.0 57 90 73.5 54 84 69.0 47 77 62.0 47 79 63.0 45 72 58.5 43 74 58.5 41 83 62.0 49 81 65.0 45 78 61.5 45 76 60.5

10/20 52 93 72.5 61 92 76.5 56 87 71.5 46 75 60.5 45 81 63.0 44 77 60.5 41 73 57.0 40 79 59.5 47 87 67.0 50 81 65.5 44 77 60.5 44 75 59.5

10/21 60 94 77.0 71 87 79.0 49 76 62.5 46 81 63.5 44 75 59.5 38 64 51.0 36 68 52.0 41 75 58.0 43 85 64.0 49 79 64.0 42 76 59.0 42 75 58.5

10/22 69 90 79.5 61 79 70.0 48 81 64.5 45 75 60.0 42 68 55.0 38 71 54.5 45 79 62.0 43 80 61.5 47 87 67.0 49 78 63.5 45 76 60.5 44 77 60.5

10/23 60 75 67.5 61 82 71.5 44 77 60.5 42 68 55.0 38 75 56.5 44 81 62.5 44 81 62.5 43 81 62.0 46 84 65.0 49 79 64.0 43 76 59.5 44 75 59.5

10/24 51 83 67.0 43 75 59.0 43 68 55.5 40 73 56.5 45 82 63.5 43 81 62.0 43 80 61.5 45 80 62.5 46 84 65.0 49 78 63.5 44 75 59.5 43 75 59.0

10/25 43 76 59.5 44 65 54.5 41 73 57.0 45 82 63.5 42 79 60.5 42 78 60.0 43 73 58.0 43 78 60.5 45 84 64.5 46 77 61.5 44 75 59.5 45 74 59.5

10/26 43 66 54.5 53 75 64.0 46 85 65.5 43 81 62.0 43 82 62.5 44 72 58.0 45 75 60.0 49 77 63.0 43 84 63.5 47 70 58.5 48 73 60.5 47 73 60.0

10/27 52 75 63.5 58 86 72.0 43 81 62.0 42 83 62.5 43 81 62.0 44 82 63.0 44 83 63.5 45 82 63.5 47 78 62.5 51 77 64.0 45 76 60.5 43 74 58.5

10/28 51 87 69.0 45 82 63.5 41 83 62.0 43 81 62.0 44 83 63.5 45 84 64.5 45 83 64.0 47 79 63.0 49 80 64.5 51 73 62.0 48 66 57.0 40 66 53.0

10/29 40 80 60.0 39 81 60.0 42 80 61.0 45 82 63.5 46 82 64.0 45 82 63.5 47 80 63.5 48 83 65.5 49 79 64.0 46 65 55.5 38 62 50.0 39 63 51.0

10/30 37 80 58.5 40 80 60.0 46 83 64.5 46 83 64.5 46 83 64.5 47 80 63.5 47 79 63.0 47 80 63.5 46 76 61.0 43 67 55.0 38 67 52.5 38 66 52.0

10/31 39 81 60.0 41 82 61.5 41 84 62.5 43 84 63.5 45 79 62.0 45 81 63.0 47 82 64.5 45 67 56.0 43 60 51.5 37 59 48.0 39 59 49.0 40 63 51.5

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

9 Days 10 Days

Redding (RDD) Daily Air Temperatures (°F)

8 Days

D

A

T

E

Forecasted

4 Days 5 Days 6 Days

Actual

Previous Day Current Day 1 Day 2 Days 3 Days 7 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 BSF 56 05/15/2019 09/20/2020

SHD Sacramento River 0.3 miles downstream of Shasta Power Plant Click Here Sacramento CCR 56 09/21/2020 TBD

SPP N/A Spring Creek Power Plant N/A Trinity DGC 56 09/15/2020 10/01/2020

KWK Sacramento River 0.8 miles downstream of Keswick Dam Click Here Trinity NFH 56 10/01/2020 12/31/2020

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

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

50

54

58

62

66

70

74

78

82

86

90

52

53

54

55

56

57

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)

Mean Daily Temperatures

TCD KWK SAC CCR BSF RDD (Air)

4
Updated 10/28/2020 at 1300

Latest Profile Date: 10/28/2020

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

2020

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 - 2020

<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 (1998-2019) 2014 2015 2016 2019 2020 2000
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 (1998-2019) 2014 2015 2016 2019 2020 2000
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 (1998-2019) 2014 2015 2016 2019 2020 2000
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 (1998-2019)

2020 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 (1998-2019)

2020 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 (1998-2019)

2020 95 90 75 50 25 10 5
Oct-28

2020 ≤52° ≤50° ≤48° Abs. Avg. ≤52° ≤50° ≤48° Abs. Avg.

1998 -33 -50 -14 32 -18 -49 -56 41

1999 307 305 279 297 169 301 1122 531

2000 71 38 13 41 39 38 53 43

2001 -17 21 55 31 -10 20 222 84

2002 130 142 131 134 72 141 525 246

2003 142 32 -1 58 78 31 -3 37

2004 -77 -24 15 39 -42 -24 61 42

2005 -75 -38 3 39 -41 -37 14 31

2006 158 149 122 143 87 147 492 242

2007 -106 -44 14 54 -58 -44 55 52

2008 -136 -63 3 68 -75 -62 13 50

2009 -93 -34 22 50 -51 -33 90 58

2010 339 231 130 234 187 228 524 313

2011 489 435 371 432 270 429 1492 730

2012 223 238 204 222 123 235 821 393

2013 -5 45 75 42 -3 45 302 116

2014 -106 -61 -13 60 -59 -60 -51 57

2015 -59 -13 -6 26 -32 -12 -23 23

2016 292 297 185 258 161 293 745 400

2017 373 337 293 335 206 333 1179 573

2018 60 64 37 54 33 63 149 82

2019 492 442 351 429 272 437 1412 707

2020 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 09/18/2020 at 1051

Latest Profile Date: 09/10/2020

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

2020

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 - 2020

<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 (2000-2019) 2014 2015 2016 2019 2020
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 (2000-2019) 2014 2015 2016 2019 2020
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 (2000-2019) 2014 2015 2016 2019 2020
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 (2000-2019)

2020 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 (2000-2019)

2020 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 (2000-2019)

2020 95 90 75 50 25 10 5
Sep-10

2020 ≤52° ≤50° ≤48° Abs. Avg. ≤52° ≤50° ≤48° Abs. Avg.

2000 186 39 -41 89 27 6 -8 14

2001 61 16 -12 29 9 2 -2 5

2002 73 40 44 53 11 6 9 9

2003 369 186 48 201 53 29 9 31

2004 130 35 -61 75 19 5 -12 12

2005 311 183 -39 178 45 29 -8 27

2006 421 299 166 295 61 47 33 47

2007 128 87 91 102 18 14 18 17

2008 -183 -244 -248 225 -26 -38 -49 38

2009 -255 -275 -284 272 -37 -43 -56 45

2010 120 -15 -162 99 17 -2 -32 17

2011 614 465 337 472 89 73 66 76

2012 393 367 358 373 57 58 70 62

2013 -75 -103 -110 96 -11 -16 -22 16

2014 -490 -453 -383 442 -71 -71 -75 72

2015 -497 -476 -394 456 -72 -75 -77 75

2016 -289 -344 -286 306 -42 -54 -56 51

2017 244 86 9 113 35 13 2 17

2018 216 186 167 190 31 29 33 31

2019 548 498 441 496 79 78 87 81

2020 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 10/13/2020 at 1414

Latest Profile Date: 10/13/2020

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

2020

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 - 2020

<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 (2000-2019) 2014 2015 2016 2019 2020
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 (2000-2019) 2014 2015 2016 2019 2020
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 (2000-2019) 2014 2015 2016 2019 2020
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 (2000-2019)

2020 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 (2000-2019)

2020 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 (2000-2019)

2020 95 90 75 50 25 10 5
Oct-13

2020 ≤60° ≤58° ≤56° Abs. Avg. ≤60° ≤58° ≤56° Abs. Avg.

2000 -7 -3 4 4 -6 -3 5 5

2001 28 38 53 40 25 39 74 46

2002 34 40 44 40 31 41 62 45

2003 31 42 60 44 28 43 84 52

2004 49 56 62 56 43 57 87 63

2005 4 -4 -50 19 3 -4 -70 26

2006 18 30 50 33 17 30 71 39

2007 34 45 3 27 30 46 5 27

2008 12 19 34 22 11 20 48 26

2009 16 13 -34 21 14 13 -48 25

2010 30 -38 -65 44 27 -39 -92 52

2011 15 22 4 14 13 23 6 14

2012 52 8 -17 26 46 8 -24 26

2013 106 34 43 61 95 35 60 63

2014 14 -11 -58 27 12 -11 -81 35

2015 17 -59 -71 49 15 -60 -100 58

2016 19 -55 -71 48 17 -57 -100 58

2017 94 3 7 35 85 3 10 32

2018 29 14 -59 34 26 14 -83 41

2019 -19 -22 -32 24 -17 -23 -45 28

2020 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