Report Generated 01/04/2021 at 0744

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

December - 2020
Shasta 

Generation 

Spring 

Creek P.P.

Keswick 

Total BSF RDB

Nov 4234 159 4521 48.3 51.4

12/01 54.9 54.1 52.6 53.6 53.5 53.5 52.5 51.9 51.6 51.2 49.8 45.0 43.4 43.3 3449 162 3836 56.5 47.2 52.7

12/02 54.6 54.0 52.8 53.4 53.3 53.3 52.3 51.8 51.6 51.4 49.4 44.9 43.0 43.0 3496 125 3718 52.5 45.9 49.3

12/03 54.5 53.7 52.6 53.4 53.3 53.1 52.1 51.7 51.4 51.2 49.4 44.9 42.4 42.5 3275 98 3611 50.0 43.9 48.0

12/04 54.4 53.5 52.2 53.4 53.3 53.1 52.1 51.6 51.3 51.0 49.3 44.9 42.5 42.2 3552 172 3519 53.0 45.8 50.3

12/05 54.3 53.5 52.2 53.2 53.1 52.8 51.7 51.3 51.0 50.8 49.0 45.0 42.6 42.0 3065 186 3511 46.0 43.0 46.3

12/06 54.2 53.4 51.9 53.0 53.0 52.8 51.9 51.5 51.3 50.9 49.0 45.1 43.6 43.4 2955 174 3505 50.0 51.2 54.0

12/07 54.2 53.5 52.0 53.0 53.0 52.9 52.1 51.7 51.5 51.2 49.3 45.0 42.4 42.4 3171 139 3509 56.5 57.3 59.1

12/08 55.3 54.1 52.1 52.9 52.8 52.7 51.7 51.3 51.1 51.1 49.0 45.0 41.7 41.3 3318 86 3513 54.5 48.0 53.1

12/09 56.4 55.5 51.6 52.8 52.7 52.4 51.5 51.1 50.9 50.7 49.7 45.1 41.8 40.9 3461 258 3511 51.0 49.4 53.3

12/10 56.3 55.6 51.9 52.9 52.7 52.5 51.7 51.4 51.1 50.9 49.8 45.0 42.5 41.8 3090 255 3509 55.0 53.4 56.5

12/11 55.9 55.1 51.9 53.7 53.1 52.6 51.3 50.7 50.5 50.4 49.6 44.9 42.3 41.5 3083 200 3505 43.5 42.0 45.5

12/12 55.8 54.9 51.5 54.2 53.8 53.6 52.5 52.1 51.8 50.9 49.9 45.0 50.3 43.2 3174 160 3506 49.5 47.1 48.4

12/13 55.7 54.8 51.4 54.3 53.8 53.5 52.6 52.2 52.1 51.6 49.5 ? 44.7 45.9 43.4 3069 80 3509 41.5 44.3 45.3

12/14 55.4 54.7 50.8 54.1 53.7 53.3 51.8 51.5 51.4 51.3 48.8 44.7 44.3 42.2 2758 351 3516 43.5 42.7 45.3

12/15 55.1 54.4 ? 51.1 53.9 53.5 53.3 52.0 ? 51.4 51.2 50.9 49.1 44.7 44.7 43.4 3070 304 3522 45.0 42.3 45.2

12/16 54.8 54.1 51.2 53.7 53.3 52.8 51.7 ! - 51.1 50.7 48.9 44.7 44.4 ? 44.4 3300 78 3524 41.5 40.9 42.8

12/17 54.7 54.0 50.7 53.8 53.5 53.3 52.2 # - 51.8 51.3 48.9 44.7 44.4 44.4 3396 177 3435 49.0 47.3 49.5

12/18 54.7 54.1 50.4 53.6 53.3 53.0 51.4 ! - # - 51.0 48.3 44.7 43.5 43.1 2809 374 3307 49.5 44.3 46.7

12/19 54.4 53.8 50.7 53.3 53.0 52.6 51.2 50.6 # - 50.2 48.3 44.8 43.3 43.0 2941 214 3266 43.0 40.6 44.2

12/20 54.3 53.5 50.4 53.2 53.0 52.9 51.5 50.7 # - 50.1 48.6 44.9 44.4 43.8 2840 142 3263 49.0 42.5 45.8

12/21 54.0 53.3 50.1 53.1 52.9 52.6 51.4 50.9 # - 50.3 48.3 45.0 44.6 44.3 2998 124 3259 43.5 42.1 44.5

12/22 53.9 53.1 49.7 53.1 52.8 52.5 51.3 50.8 # - 50.4 47.9 44.9 44.2 43.5 2569 304 3264 46.0 46.5 48.5

12/23 54.3 53.6 49.9 52.7 52.5 52.0 50.4 49.8 # - 49.5 47.5 44.7 43.2 42.2 2769 175 3259 48.5 47.4 48.7

12/24 53.8 53.2 50.2 52.4 52.1 51.5 50.0 49.3 # - 48.8 47.1 44.6 42.1 40.4 2995 93 3260 42.5 38.2 41.2

12/25 53.4 52.8 49.4 52.1 51.9 51.4 50.2 49.6 # - 48.8 47.7 44.8 43.5 41.4 2900 286 3264 43.5 42.0 44.1

12/26 53.3 52.6 49.5 52.3 52.2 52.1 50.3 50.2 50.5 50.2 48.1 44.9 43.3 42.5 2872 145 3260 50.0 48.3 50.3

12/27 53.3 52.6 49.4 52.3 52.1 51.8 50.2 49.8 49.7 49.9 47.5 44.8 43.5 42.9 2936 143 3261 46.0 41.7 45.1

12/28 53.3 52.6 49.4 52.1 51.9 51.6 50.0 49.4 49.2 49.1 47.3 44.5 42.3 42.1 2708 197 3263 46.0 42.1 45.3

12/29 53.1 52.4 49.3 51.8 51.6 51.2 49.8 49.2 48.9 48.7 47.0 44.3 41.7 41.3 2740 264 3267 48.5 43.6 45.7

12/30 52.7 52.0 49.3 51.7 51.5 51.1 49.8 49.2 48.6 48.6 47.3 44.3 41.6 40.8 3131 199 3265 42.5 42.5 44.6

12/31 52.5 51.8 49.0 51.7 51.5 51.2 50.2 49.8 48.5 49.2 47.2 44.3 42.9 42.2 3141 177 3261 46.0 43.8 46.6

Dec 3066 188 3419 45.1 47.9

95031 5842 105978

Legend Notes 188490 11587 210203

? = 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

52.6

53.5

51.3

D

A

T

E

55.2 54.8

CCR2 TCD SAC 1 SHD SPP1 KWK BSF

54.4 53.7 50.9 53.1 52.8

54.8 54.2 54.1 54.1 53.3 53.3

Mean Daily 

Release (CFS)

NFH

46.3

Mean Daily Water Temperatures (°F)

46.9

Mean Daily Air 

Temperatures (°F)

RDD

52.4

Total CFS

50.8 42.5 47.8

IGO3

50.8

Total AF

53.0 52.1

RDB

50.4 48.6

LWS

44.8 43.4

DGC

45.7

JLF BND

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

12/01 29 64 46.5 52 67 59.5 35 67 51.0 36 66 51.0 34 67 50.5 34 66 50.0 34 67 50.5 34 68 51.0 45 69 57.0 37 61 49.0 41 60 50.5 34 56 45.0

12/02 44 69 56.5 34 67 50.5 36 65 50.5 34 68 51.0 33 66 49.5 34 67 50.5 39 69 54.0 37 70 53.5 36 67 51.5 38 60 49.0 33 55 44.0 29 52 40.5

12/03 33 72 52.5 35 65 50.0 34 69 51.5 34 63 48.5 35 65 50.0 38 69 53.5 37 70 53.5 36 67 51.5 43 61 52.0 36 62 49.0 37 61 49.0 36 61 48.5

12/04 34 66 50.0 36 69 52.5 34 62 48.0 42 64 53.0 38 68 53.0 36 68 52.0 36 67 51.5 36 65 50.5 38 60 49.0 35 61 48.0 35 62 48.5 36 58 47.0

12/05 34 72 53.0 32 65 48.5 35 65 50.0 40 69 54.5 36 68 52.0 35 67 51.0 37 63 50.0 33 60 46.5 37 61 49.0 33 57 45.0 31 53 42.0 34 57 45.5

12/06 31 61 46.0 35 62 48.5 42 66 54.0 37 70 53.5 36 65 50.5 35 61 48.0 33 60 46.5 36 61 48.5 42 64 53.0 42 56 49.0 38 56 47.0 36 55 45.5

12/07 33 67 50.0 55 69 62.0 38 70 54.0 35 65 50.0 34 62 48.0 30 57 43.5 33 59 46.0 34 58 46.0 39 60 49.5 38 53 45.5 39 55 47.0 35 53 44.0

12/08 41 72 56.5 34 71 52.5 33 67 50.0 36 64 50.0 30 58 44.0 35 56 45.5 36 59 47.5 36 60 48.0 40 56 48.0 38 57 47.5 40 59 49.5 38 58 48.0

12/09 33 76 54.5 33 68 50.5 38 63 50.5 29 55 42.0 33 52 42.5 36 52 44.0 36 56 46.0 33 55 44.0 36 57 46.5 41 53 47.0 37 57 47.0 40 56 48.0

12/10 32 70 51.0 53 64 58.5 29 53 41.0 35 50 42.5 40 54 47.0 36 54 45.0 33 55 44.0 36 56 46.0 40 56 48.0 40 56 48.0 37 57 47.0 34 57 45.5

12/11 44 66 55.0 34 54 44.0 36 55 45.5 39 53 46.0 35 55 45.0 33 53 43.0 36 55 45.5 35 56 45.5 40 59 49.5 39 58 48.5 37 55 46.0 35 54 44.5

12/12 34 53 43.5 43 57 50.0 36 51 43.5 32 55 43.5 30 53 41.5 32 57 44.5 39 56 47.5 34 58 46.0 36 57 46.5 45 57 51.0 43 59 51.0 39 59 49.0

12/13 43 56 49.5 45 49 47.0 30 55 42.5 31 54 42.5 33 54 43.5 36 53 44.5 31 56 43.5 33 54 43.5 42 55 48.5 46 58 52.0 38 57 47.5 36 57 46.5

12/14 37 46 41.5 32 56 44.0 33 55 44.0 37 52 44.5 37 55 46.0 31 58 44.5 32 57 44.5 37 57 47.0 41 60 50.5 44 54 49.0 41 60 50.5 43 57 50.0

12/15 30 57 43.5 39 53 46.0 36 53 44.5 41 56 48.5 36 58 47.0 35 58 46.5 35 59 47.0 36 59 47.5 40 59 49.5 44 60 52.0 40 64 52.0 42 60 51.0

12/16 37 53 45.0 35 52 43.5 40 56 48.0 36 59 47.5 35 60 47.5 34 59 46.5 36 58 47.0 35 57 46.0 43 57 50.0 35 57 46.0 34 58 46.0 36 59 47.5

12/17 34 49 41.5 42 55 48.5 32 59 45.5 31 61 46.0 32 62 47.0 35 62 48.5 36 61 48.5 37 61 49.0 36 61 48.5 36 58 47.0 36 60 48.0 37 61 49.0

12/18 39 59 49.0 38 60 49.0 29 60 44.5 32 64 48.0 33 62 47.5 33 58 45.5 34 60 47.0 33 60 46.5 36 58 47.0 36 57 46.5 42 53 47.5 41 57 49.0

12/19 36 63 49.5 31 61 46.0 34 65 49.5 34 62 48.0 35 58 46.5 33 60 46.5 30 59 44.5 31 51 41.0 36 55 45.5 34 57 45.5 35 55 45.0 35 60 47.5

12/20 30 56 43.0 34 64 49.0 31 61 46.0 33 55 44.0 31 59 45.0 28 58 43.0 29 52 40.5 34 53 43.5 41 56 48.5 37 57 47.0 35 56 45.5 33 58 45.5

12/21 34 64 49.0 33 60 46.5 36 59 47.5 34 62 48.0 31 60 45.5 34 53 43.5 35 53 44.0 34 53 43.5 38 55 46.5 37 57 47.0 37 56 46.5 34 59 46.5

12/22 31 56 43.5 37 57 47.0 33 60 46.5 32 59 45.5 35 52 43.5 38 53 45.5 33 52 42.5 35 54 44.5 38 55 46.5 41 60 50.5 39 57 48.0 39 58 48.5

12/23 34 58 46.0 48 60 54.0 31 57 44.0 37 51 44.0 40 53 46.5 37 51 44.0 32 51 41.5 30 55 42.5 41 55 48.0 39 58 48.5 37 57 47.0 36 55 45.5

12/24 35 62 48.5 27 58 42.5 33 48 40.5 36 53 44.5 34 52 43.0 36 52 44.0 29 53 41.0 31 54 42.5 39 59 49.0 38 56 47.0 40 55 47.5 39 54 46.5

12/25 27 58 42.5 40 47 43.5 37 54 45.5 29 52 40.5 29 53 41.0 29 51 40.0 31 52 41.5 33 55 44.0 45 52 48.5 40 55 47.5 39 56 47.5 38 62 50.0

12/26 40 47 43.5 44 55 49.5 31 52 41.5 34 53 43.5 28 55 41.5 31 51 41.0 34 54 44.0 34 56 45.0 40 61 50.5 43 59 51.0 38 58 48.0 40 56 48.0

12/27 41 59 50.0 40 54 47.0 30 55 42.5 27 58 42.5 28 52 40.0 32 51 41.5 32 53 42.5 34 53 43.5 40 58 49.0 42 55 48.5 40 55 47.5 35 52 43.5

12/28 35 57 46.0 42 57 49.5 30 60 45.0 30 53 41.5 32 53 42.5 30 52 41.0 35 51 43.0 37 54 45.5 42 51 46.5 39 53 46.0 36 53 44.5 37 58 47.5

12/29 32 60 46.0 40 60 50.0 30 54 42.0 38 55 46.5 31 53 42.0 36 51 43.5 39 54 46.5 37 52 44.5 39 57 48.0 42 51 46.5 35 52 43.5 36 57 46.5

12/30 36 61 48.5 36 53 44.5 33 56 44.5 34 55 44.5 37 51 44.0 40 54 47.0 39 53 46.0 37 52 44.5 40 49 44.5 37 52 44.5 34 55 44.5 37 59 48.0

12/31 35 50 42.5 34 58 46.0 34 55 44.5 37 52 44.5 40 54 47.0 42 54 48.0 34 52 43.0 36 50 43.0 41 55 48.0 38 54 46.0 38 53 45.5 35 55 45.0

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

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

37

40

43

46

49

52

55

58

61

49

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 31

Air Temperature (°F)

Water Temperature (°F)

Mean Daily Temperatures

TCD KWK SAC CCR BSF RDD (Air)

4
Updated 01/14/2021 at 1233

Latest Profile Date: 01/12/2021

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
Dec-31

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

1998 1202 571 398 724 91 211 671 324

1999 429 279 160 289 33 103 270 135

2000 76 48 7 44 6 18 12 12

2001 -44 834 124 334 -3 308 209 173

2002 1442 340 177 653 109 126 298 177

2003 1524 142 -47 571 116 53 -79 82

2004 -348 433 84 289 -26 160 142 110

2005 1097 406 100 534 83 150 169 134

2006 1177 290 158 542 89 107 267 154

2007 278 -1 32 103 21 0 53 25

2008 -426 618 67 370 -32 228 112 124

2009 206 189 168 188 16 70 284 123

2010 1589 270 -33 630 120 100 -55 92

2011 1000 280 335 538 76 103 564 248

2012 1093 340 234 556 83 126 394 201

2013 -149 72 138 120 -11 27 232 90

2014 114 -15 -58 62 9 -6 -98 37

2015 -352 673 212 412 -27 248 358 211

2016 587 1416 223 742 45 523 377 315

2017 -432 227 254 305 -33 84 429 182

2018 -834 -51 -50 312 -63 -19 -84 55

2019 -369 347 194 303 -28 128 328 161

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 01/19/2021 at 1442

Latest Profile Date: 01/19/2021

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
Dec-31

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

2000 451 844 -430 575 36 97 -54 63

2001 -185 161 162 169 -15 19 20 18

2002 92 467 476 345 7 54 60 40

2003 544 316 244 368 43 37 31 37

2004 235 -98 -208 180 19 -11 -26 19

2005 363 695 664 574 29 80 84 64

2006 530 922 101 518 42 107 13 54

2007 -66 306 346 239 -5 35 44 28

2008 -485 -114 -59 219 -39 -13 -7 20

2009 -339 -313 -305 319 -27 -36 -38 34

2010 355 730 777 620 28 84 98 70

2011 693 147 44 295 55 17 5 26

2012 280 651 682 538 22 75 86 61

2013 -289 76 116 160 -23 9 15 15

2014 -447 -93 -677 405 -36 -11 -85 44

2015 -754 -361 -741 619 -60 -42 -93 65

2016 45 -181 -208 145 4 -21 -26 17

2017 379 746 -421 515 30 86 -53 56

2018 239 185 160 195 19 21 20 20

2019 696 676 635 669 55 78 80 71

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 01/14/2021 at 1400

Latest Profile Date: 01/13/2021

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
Dec-31

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

2000 3 3 3 3 2 2 2 2

2001 6 6 6 6 3 3 3 3

2002 1 1 1 1 1 1 1 1

2003 1 1 1 1 0 0 0 0

2004 8 8 8 8 4 4 4 4

2005 1 1 1 1 0 0 0 0

2006 0 0 0 0 0 0 0 0

2007 0 0 -7 3 0 0 -4 1

2008 1 1 1 1 1 1 1 1

2009 0 0 0 0 0 0 0 0

2010 1 1 1 1 0 0 0 0

2011 0 0 0 0 0 0 0 0

2012 3 3 3 3 1 1 1 1

2013 0 0 0 0 0 0 0 0

2014 2 2 2 2 1 1 1 1

2015 4 4 4 4 2 2 2 2

2016 11 11 11 11 5 5 5 5

2017 0 0 0 0 0 0 0 0

2018 3 3 3 3 1 1 1 1

2019 6 6 6 6 3 3 3 3

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