Report Generated 10/02/2020 at 1330

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

September - 2020
Shasta 

Generation 

Spring 

Creek P.P.

Keswick 

Total BSF RDB

Aug 7694 1530 9735 78.4 78.9

09/01 50.8 ? 49.8 56.4 52.8 53.6 54.5 56.4 57.7 58.6 59.7 58.9 50.7 58.1 63.4 5501 1508 7538 91.0 87.0 84.7

09/02 51.3 ? 49.9 56.4 52.3 53.3 53.8 56.0 57.7 58.7 60.2 58.6 50.9 58.0 63.4 5894 1235 7546 82.0 77.2 75.3

09/03 51.0 50.0 56.4 52.6 53.3 53.9 55.7 57.2 58.0 59.4 58.7 50.9 57.9 63.2 5576 1532 7524 82.5 76.4 75.4

09/04 50.9 49.7 56.3 53.1 53.6 54.1 55.8 57.2 58.1 59.3 58.2 50.8 56.6 62.5 5975 1457 7516 82.0 76.3 78.2

09/05 50.7 49.7 ? 56.3 52.3 53.1 53.5 55.1 56.6 57.6 59.0 57.9 50.7 56.3 61.5 6530 1072 7537 84.0 75.3 82.2

09/06 50.8 49.7 56.3 52.0 52.7 53.1 54.8 56.1 56.9 58.3 58.0 50.4 56.4 60.9 5797 1279 7526 ↑ 88.5 78.8 84.9

09/07 ? 51.0 49.9 ? 56.3 52.2 53.0 53.5 54.9 56.0 56.6 57.9 58.1 50.3 55.9 60.6 5798 1222 7526 ↑ 91.5 80.1 84.3

09/08 ? 51.7 50.1 56.3 52.7 53.5 54.1 55.6 56.8 57.6 58.1 58.2 50.4 55.6 60.2 5639 1002 7087 86.5 83.4 84.3

09/09 51.2 49.8 56.3 52.1 52.5 52.7 53.8 55.0 55.9 57.1 56.1 50.4 53.3 57.6 5239 1391 7013 72.0 61.5 67.5

09/10 51.1 49.9 56.5 51.8 52.5 52.8 53.5 54.1 54.4 54.6 56.5 50.4 51.8 54.9 5130 808 7039 70.5 63.0 65.6

09/11 51.0 50.0 56.4 51.7 52.2 52.4 53.4 54.4 55.1 55.6 56.9 49.4 53.7 56.3 5010 1443 7055 73.0 65.1 68.0

09/12 51.3 50.2 56.3 52.2 52.7 53.2 54.0 54.8 55.4 55.9 57.1 49.4 53.0 56.4 4894 1663 7058 75.0 67.4 69.6

09/13 51.4 50.1 56.2 52.4 53.0 53.4 54.4 55.4 56.1 56.7 57.2 49.3 51.2 53.7 5320 1726 7073 75.0 67.8 70.4

09/14 51.5 50.2 56.1 52.4 53.0 53.4 54.7 55.8 56.5 57.2 57.2 49.0 51.0 53.0 5606 1231 7049 75.0 68.0 69.6

09/15 51.5 50.7 56.0 52.4 53.0 53.5 54.6 55.7 56.5 57.4 57.3 48.9 50.6 53.0 5699 1844 7039 75.0 68.3 71.5

09/16 51.6 50.5 55.9 52.6 53.1 53.5 54.7 55.8 56.6 57.4 56.4 48.9 51.0 53.2 5067 1779 6998 74.0 67.3 70.0

09/17 51.7 50.3 55.8 52.7 53.4 53.8 55.0 56.1 56.8 57.5 56.4 48.8 51.2 53.5 4719 1931 7016 73.5 69.3 71.5

09/18 51.8 50.5 55.5 52.9 53.5 53.9 55.5 56.8 57.7 58.5 56.2 48.7 50.8 54.0 4532 1866 6801 74.5 71.9 71.0

09/19 51.9 50.7 55.4 52.9 53.6 54.1 55.4 56.5 57.4 58.5 56.7 48.8 51.4 53.8 4856 1833 6906 74.0 68.2 71.2

09/20 51.8 50.5 55.3 52.9 53.6 54.1 55.5 56.6 57.4 58.4 56.8 48.6 53.1 56.4 4293 1728 6841 80.5 69.8 72.1

09/21 52.4 51.2 55.0 52.9 53.5 53.9 55.2 56.4 57.2 58.1 56.1 48.8 52.8 56.7 4265 1874 6856 72.5 66.9 69.6

09/22 52.4 ? 51.4 54.9 53.0 53.5 53.9 55.2 56.3 57.1 58.0 56.2 48.9 52.8 56.7 4104 1943 6821 71.5 67.5 69.0

09/23 53.1 ? 51.6 54.7 53.2 53.8 54.3 55.4 56.3 57.1 58.1 55.9 48.8 52.4 55.8 5054 1958 6870 72.5 67.6 69.8

09/24 53.1 51.4 54.7 53.2 53.7 54.2 55.5 56.6 57.4 58.4 55.9 48.9 53.6 ? 57.4 5217 1856 6851 72.5 67.4 70.7

09/25 52.8 51.6 54.6 53.3 53.8 54.3 55.5 56.6 57.4 58.3 55.9 49.2 53.8 57.7 4321 1849 6859 73.5 68.1 70.5

09/26 53.0 51.8 54.7 53.5 54.1 54.8 55.9 57.0 57.8 58.6 56.5 49.8 55.2 58.8 4803 1746 6855 76.5 73.1 79.1

09/27 53.1 ? 52.0 54.6 53.7 54.3 55.1 56.3 57.4 58.3 59.1 56.5 49.8 54.7 58.9 4892 1755 6858 85.0 82.1 82.1

09/28 53.4 ? 52.2 54.4 53.8 54.4 55.1 56.4 57.4 58.3 59.3 56.4 49.8 54.6 58.8 4704 2065 6862 83.5 79.3 83.5

09/29 53.4 52.2 54.3 53.5 53.9 54.3 55.4 56.5 57.4 58.5 55.4 49.4 53.0 56.7 4259 1910 6867 75.0 66.2 71.8

09/30 53.5 52.4 54.2 53.5 54.0 54.4 55.2 56.0 56.6 57.2 55.5 49.3 51.9 55.1 4217 1860 6870 80.0 69.4 76.1

-

Sep 5097 1612 7075 71.7 74.3

152911 48366 212257

Legend Notes 303293 95932 421003

? = 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

53.9

55.2

55.1

D

A

T

E

50.9 50.0

CCR2 TCD SAC 1 SHD SPP1 KWK BSF

51.9 50.7 55.6 52.8 53.4

56.7 52.4 53.0 53.6 56.5 57.2

Mean Daily 

Release (CFS)

NFH

64.7

Mean Daily Water Temperatures (°F)

51.0

Mean Daily Air 

Temperatures (°F)

RDD

84.5

Total CFS

56.3 57.5 78.1

IGO3

57.1

Total AF

58.2 59.0

RDB

58.0 56.9

LWS

49.6 53.7

DGC

59.0

JLF BND

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

09/01 62 104 83.0 83 108 95.5 64 102 83.0 65 103 84.0 65 102 83.5 64 106 85.0 68 110 89.0 69 110 89.5 66 106 86.0 63 105 84.0 62 96 79.0 61 92 76.5

09/02 74 108 91.0 66 99 82.5 64 103 83.5 66 103 84.5 65 107 86.0 67 110 88.5 68 109 88.5 67 106 86.5 66 103 84.5 62 101 81.5 64 100 82.0 62 99 80.5

09/03 66 98 82.0 66 100 83.0 64 100 82.0 64 104 84.0 67 109 88.0 69 107 88.0 67 103 85.0 65 99 82.0 67 102 84.5 64 101 82.5 63 95 79.0 60 94 77.0

09/04 65 100 82.5 67 100 83.5 65 105 85.0 72 110 91.0 74 109 91.5 73 100 86.5 64 101 82.5 63 98 80.5 65 99 82.0 61 98 79.5 60 93 76.5 60 94 77.0

09/05 67 97 82.0 69 103 86.0 73 110 91.5 74 109 91.5 74 100 87.0 63 101 82.0 63 99 81.0 63 100 81.5 62 98 80.0 60 97 78.5 59 91 75.0 59 93 76.0

09/06 68 100 84.0 66 110 88.0 70 109 89.5 72 101 86.5 64 101 82.5 62 99 80.5 64 98 81.0 63 98 80.5 60 96 78.0 59 95 77.0 57 90 73.5 59 93 76.0

09/07 66 111 88.5 73 112 92.5 67 93 80.0 60 95 77.5 58 94 76.0 60 96 78.0 63 98 80.5 63 99 81.0 61 98 79.5 61 96 78.5 58 92 75.0 58 93 75.5

09/08 71 112 91.5 76 93 84.5 61 96 78.5 56 92 74.0 58 94 76.0 60 96 78.0 61 96 78.5 59 91 75.0 60 92 76.0 63 93 78.0 62 89 75.5 58 90 74.0

09/09 75 98 86.5 77 96 86.5 56 94 75.0 58 94 76.0 58 95 76.5 58 92 75.0 57 87 72.0 57 89 73.0 61 90 75.5 58 92 75.0 59 91 75.0 59 92 75.5

09/10 59 85 72.0 53 86 69.5 59 93 76.0 59 94 76.5 58 92 75.0 56 88 72.0 57 88 72.5 58 86 72.0 58 86 72.0 60 92 76.0 60 92 76.0 59 91 75.0

09/11 53 88 70.5 56 91 73.5 62 93 77.5 57 92 74.5 58 90 74.0 57 88 72.5 58 85 71.5 57 84 70.5 57 83 70.0 58 86 72.0 59 89 74.0 58 91 74.5

09/12 55 91 73.0 56 91 73.5 56 92 74.0 57 88 72.5 55 89 72.0 56 87 71.5 57 84 70.5 55 81 68.0 60 89 74.5 61 94 77.5 61 92 76.5 58 91 74.5

09/13 55 95 75.0 57 93 75.0 56 90 73.0 54 90 72.0 56 88 72.0 56 84 70.0 55 80 67.5 54 84 69.0 61 92 76.5 59 94 76.5 59 91 75.0 58 91 74.5

09/14 57 93 75.0 59 89 74.0 54 90 72.0 55 88 71.5 56 83 69.5 54 76 65.0 50 84 67.0 56 90 73.0 59 93 76.0 58 95 76.5 58 91 74.5 58 92 75.0

09/15 59 91 75.0 57 91 74.0 54 91 72.5 56 84 70.0 53 78 65.5 53 88 70.5 57 92 74.5 58 90 74.0 59 90 74.5 57 94 75.5 58 91 74.5 56 89 72.5

09/16 55 95 75.0 57 90 73.5 55 86 70.5 52 78 65.0 52 84 68.0 54 90 72.0 55 89 72.0 54 88 71.0 60 88 74.0 59 86 72.5 58 84 71.0 56 87 71.5

09/17 56 92 74.0 56 88 72.0 54 78 66.0 51 84 67.5 53 90 71.5 54 88 71.0 55 88 71.5 55 90 72.5 59 90 74.5 59 90 74.5 58 87 72.5 58 89 73.5

09/18 55 92 73.5 50 79 64.5 51 84 67.5 54 91 72.5 54 88 71.0 53 86 69.5 55 91 73.0 56 90 73.0 61 83 72.0 58 87 72.5 57 87 72.0 56 88 72.0

09/19 66 83 74.5 58 87 72.5 56 92 74.0 55 88 71.5 54 85 69.5 54 88 71.0 55 86 70.5 54 83 68.5 64 89 76.5 57 92 74.5 58 89 73.5 56 88 72.0

09/20 58 90 74.0 72 94 83.0 57 90 73.5 56 86 71.0 56 86 71.0 55 86 70.5 54 81 67.5 53 86 69.5 65 90 77.5 65 95 80.0 61 92 76.5 59 89 74.0

09/21 65 96 80.5 58 89 73.5 55 85 70.0 54 86 70.0 55 82 68.5 52 86 69.0 56 94 75.0 62 97 79.5 63 97 80.0 60 97 78.5 60 90 75.0 56 86 71.0

09/22 57 88 72.5 59 86 72.5 54 87 70.5 55 83 69.0 52 86 69.0 57 95 76.0 65 99 82.0 65 100 82.5 64 100 82.0 61 97 79.0 61 91 76.0 57 89 73.0

09/23 57 86 71.5 58 86 72.0 54 82 68.0 53 87 70.0 58 94 76.0 64 98 81.0 66 101 83.5 64 102 83.0 63 98 80.5 61 97 79.0 60 91 75.5 57 90 73.5

09/24 57 88 72.5 61 83 72.0 52 86 69.0 57 90 73.5 63 97 80.0 65 100 82.5 63 102 82.5 63 100 81.5 62 94 78.0 60 92 76.0 59 89 74.0 56 89 72.5

09/25 60 85 72.5 59 85 72.0 56 86 71.0 59 94 76.5 62 98 80.0 59 99 79.0 59 99 79.0 59 98 78.5 58 96 77.0 58 95 76.5 58 89 73.5 56 87 71.5

09/26 59 88 73.5 63 88 75.5 61 93 77.0 61 97 79.0 59 99 79.0 60 101 80.5 61 100 80.5 58 97 77.5 61 92 76.5 57 84 70.5 57 81 69.0 54 80 67.0

09/27 61 92 76.5 72 93 82.5 62 96 79.0 58 97 77.5 60 101 80.5 60 100 80.0 59 96 77.5 58 95 76.5 61 90 75.5 58 90 74.0 57 87 72.0 56 88 72.0

09/28 72 98 85.0 65 98 81.5 58 97 77.5 60 102 81.0 61 100 80.5 61 96 78.5 60 94 77.0 58 91 74.5 58 92 75.0 57 92 74.5 57 86 71.5 54 85 69.5

09/29 65 102 83.5 59 96 77.5 60 99 79.5 63 101 82.0 62 97 79.5 60 95 77.5 58 93 75.5 57 94 75.5 59 93 76.0 56 93 74.5 57 87 72.0 54 86 70.0

09/30 58 92 75.0 58 98 78.0 65 100 82.5 62 99 80.5 61 95 78.0 57 91 74.0 56 93 74.5 57 93 75.0 58 92 75.0 57 90 73.5 54 79 66.5 53 81 67.0

-

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

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 9 Days 10 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

66

70

74

78

82

86

90

94

50

51

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

Air Temperature (°F)

Water Temperature (°F)

Mean Daily Temperatures

TCD KWK SAC CCR BSF RDD (Air)

4
Updated 09/23/2020 at 1224

Latest Profile Date: 09/23/2020

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
Sep-23

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

1998 -85 -121 -75 94 -21 -44 -70 45

1999 341 317 335 331 84 115 313 171

2000 -17 -44 -40 34 -4 -16 -37 19

2001 -67 -2 98 55 -16 -1 92 36

2002 114 154 284 184 28 56 265 116

2003 111 -10 -46 56 27 -4 -43 25

2004 -200 -139 -32 124 -49 -51 -30 43

2005 -144 -108 -31 94 -35 -39 -29 35

2006 147 159 173 160 36 58 162 85

2007 -111 -32 70 71 -27 -11 65 35

2008 -252 -148 -15 138 -62 -54 -14 43

2009 -137 -60 48 82 -34 -22 45 33

2010 422 316 226 321 104 115 211 143

2011 581 507 476 521 143 184 445 257

2012 265 287 274 275 65 104 256 142

2013 1 89 180 90 0 32 168 67

2014 -304 -201 -64 190 -75 -73 -60 69

2015 -84 -5 -16 35 -21 -2 -15 12

2016 440 393 230 354 108 143 215 155

2017 538 412 367 439 132 150 343 208

2018 164 191 124 160 40 70 116 75

2019 656 583 443 561 161 212 414 262

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 09/18/2020 at 1041

Latest Profile Date: 09/15/2020

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
Sep-15

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

2000 1 41 88 43 1 41 255 99

2001 14 49 94 52 10 49 271 110

2002 13 47 74 45 9 47 215 90

2003 3 43 81 42 2 43 233 93

2004 10 36 46 31 7 36 133 59

2005 -50 -53 -26 43 -35 -53 -75 54

2006 23 55 99 59 16 55 286 119

2007 1 24 43 23 1 24 126 50

2008 0 32 68 33 0 32 196 76

2009 -24 -15 -29 23 -16 -15 -85 39

2010 -34 -48 -28 37 -23 -48 -81 51

2011 -28 -11 -14 18 -19 -11 -39 23

2012 -3 11 3 6 -2 11 10 8

2013 23 53 81 52 16 53 235 101

2014 -19 -7 -31 19 -13 -7 -88 36

2015 -32 -92 -34 53 -22 -92 -100 71

2016 -50 -57 -24 44 -35 -57 -71 54

2017 17 42 55 38 11 42 159 71

2018 -24 -12 -12 16 -17 -12 -35 22

2019 -40 -10 -19 23 -27 -10 -54 31

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