Report Generated 01/03/2022 at 1039

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 - 2021
Shasta 

Generation 

Spring 

Creek P.P.

Keswick 

Total BSF RDB

Nov 3033 292 3542 52.0 54.0

12/01 55.5 54.5 # - 54.7 54.8 55.1 54.7 54.2 54.3 53.9 52.3 51.1 47.7 47.8 3577 74 3304 ↑ 63.5 54.3 57.9

12/02 55.1 54.2 # - 54.5 54.5 54.6 54.2 53.9 54.2 53.9 51.8 ? 51.1 47.8 47.4 2746 74 3295 57.0 49.6 53.3

12/03 54.7 54.1 # - 54.4 54.4 54.3 53.8 53.4 53.5 53.3 51.9 51.1 47.7 47.4 2761 229 3303 52.5 47.9 50.7

12/04 54.5 54.0 # - 54.3 54.2 54.1 53.5 53.0 53.2 52.9 52.1 51.1 47.5 47.2 2937 82 3298 52.5 47.1 50.7

12/05 54.5 53.8 # - 54.1 54.0 54.0 53.6 53.3 53.5 53.0 52.1 51.0 47.3 47.1 3020 76 3303 52.0 49.6 50.6

12/06 54.5 53.6 # - 53.9 53.7 53.4 53.2 52.9 53.2 52.7 52.1 51.0 47.2 46.7 2969 76 3301 45.5 46.7 47.0

12/07 54.1 53.6 # - 53.7 53.7 53.9 53.4 53.0 53.2 52.7 52.7 51.2 48.0 47.7 2542 74 3288 56.5 51.9 53.3

12/08 53.9 53.4 # - 53.6 53.6 53.6 53.7 53.6 54.0 53.3 52.7 51.2 49.1 49.0 2948 82 3305 50.0 49.9 49.8

12/09 54.2 53.4 # - 53.5 53.4 53.4 53.4 53.2 53.5 53.2 51.9 50.5 47.4 47.9 1983 375 3302 47.0 48.5 50.0

12/10 54.1 53.4 # - 53.2 52.8 52.4 ? 51.5 51.1 51.2 51.4 50.7 50.0 44.6 44.9 2437 76 3313 44.0 40.4 43.0

12/11 53.8 53.0 # - 52.9 52.5 52.0 ? 51.0 50.2 50.1 49.5 50.7 ? 49.9 44.1 ? 43.2 3174 77 3305 39.5 38.9 40.0

12/12 53.5 52.7 # - 52.5 52.0 51.7 50.7 50.3 50.4 49.3 50.2 ? 49.8 43.6 43.2 2965 76 3308 44.0 46.0 46.2

12/13 53.3 52.6 # - 52.3 51.6 51.4 ? 49.5 49.2 49.5 49.1 49.8 49.6 44.4 44.0 1313 1050 3308 46.0 47.4 47.6

12/14 53.2 52.6 # - 52.1 51.7 51.6 49.0 48.5 48.9 48.2 49.3 49.1 43.6 43.7 2985 132 3303 41.0 41.4 42.2

12/15 53.2 52.3 # - 51.5 50.3 50.2 48.4 47.9 48.0 47.3 48.1 ! - ! - ! - 2509 585 3319 45.0 41.3 42.1

12/16 53.0 52.6 # - 51.6 50.5 50.5 47.8 46.9 47.2 46.4 49.3 ? 48.5 ? 41.6 ? 40.5 1691 329 3333 46.0 44.4 43.7

12/17 52.7 52.4 # - 51.4 50.9 50.8 48.9 48.1 48.3 47.5 48.5 47.8 44.0 42.9 1741 568 3332 43.5 39.3 41.1

12/18 52.3 51.8 # - 51.2 50.9 50.7 48.7 47.9 48.0 47.6 48.4 47.2 43.7 44.0 3083 248 3334 41.5 39.0 39.3

12/19 52.1 51.5 # - 51.2 50.9 50.5 49.3 48.5 48.5 ? 47.7 48.3 47.2 43.9 44.3 2602 244 3340 39.0 38.3 38.2

12/20 52.4 51.6 # - 51.2 50.9 50.6 ? 49.4 48.7 48.8 48.2 48.3 47.2 43.9 44.5 2536 482 3267 43.0 40.5 42.2

12/21 52.9 52.4 # - 51.0 50.6 50.1 48.6 47.9 48.0 47.6 47.8 46.8 42.9 43.6 2045 829 3236 36.5 35.2 37.0

12/22 52.8 52.3 # - 50.8 50.5 50.4 48.6 48.2 48.2 47.5 48.5 46.9 43.2 43.7 2774 137 3254 44.5 42.7 43.3

12/23 52.7 52.1 # - 50.9 50.5 50.5 47.3 47.2 47.6 47.5 48.7 47.0 43.6 44.3 2431 77 3300 46.5 45.2 46.5

12/24 52.4 ? 51.7 # - 51.4 51.0 51.0 49.3 48.5 48.7 48.1 48.1 46.5 43.4 44.1 2336 79 3302 49.5 48.2 50.0

12/25 51.9 ! - # - 51.5 51.2 50.9 47.7 47.5 48.0 48.2 48.0 46.2 42.6 43.3 2629 114 3311 45.0 44.1 46.2

12/26 51.5 ! - # - 51.2 50.6 49.9 46.5 45.6 45.8 45.3 46.9 46.0 41.8 42.4 2929 77 3310 40.0 41.3 41.3

12/27 51.1 ! - # - 50.8 50.4 50.1 47.4 46.6 46.7 45.8 47.1 45.7 41.8 42.1 3545 104 3257 43.0 42.5 43.8

12/28 51.1 ? 50.6 # - 50.3 49.9 49.4 47.5 46.7 46.9 46.4 46.6 45.7 41.1 41.7 2227 540 3258 37.5 36.7 37.2

12/29 51.2 50.4 # - 49.9 49.6 49.2 47.2 46.6 46.7 46.2 46.6 45.6 ? 41.8 42.2 3893 77 3256 38.5 37.2 37.8

12/30 51.0 50.4 # - 49.8 49.4 48.9 46.9 46.2 46.3 45.9 46.2 45.4 42.0 42.5 3228 88 3255 40.5 38.8 38.9

12/31 50.7 50.2 # - 49.8 49.4 49.0 47.4 46.7 46.9 46.2 46.1 45.2 41.4 42.2 3020 153 3254 41.0 38.5 40.1

Dec 2696 235 3295 43.6 44.9

83576 7284 102154

Legend Notes 165770 14448 202618

? = 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

Total AF

55.6 53.7

RDB

49.2 49.4

LWS

48.4 44.4

DGC

50.1

Mean Daily Air 

Temperatures (°F)

RDD

55.3

Total CFS

44.5 45.5

Mean Daily 

Release (CFS)

NFH

49.7

Mean Daily Water Temperatures (°F)

53.1

JLF BND IGO

52.1

BSF

- 56.8 56.8 56.7 56.2 55.7 57.1

D

A

T

E

57.4 56.8

SAC CCR 2 TCD1 SHD SPP1 KWK

53.0 52.5 - 51.7 51.5 50.1 49.5 49.7

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

12/01 40 80 60.0 48 75 61.5 44 72 58.0 42 69 55.5 40 67 53.5 40 69 54.5 42 62 52.0 43 64 53.5 43 68 55.5 42 61 51.5 41 59 50.0 35 57 46.0

12/02 44 83 63.5 40 72 56.0 42 69 55.5 41 67 54.0 42 70 56.0 42 60 51.0 43 65 54.0 41 63 52.0 41 61 51.0 40 58 49.0 35 54 44.5 36 52 44.0

12/03 40 74 57.0 38 68 53.0 40 67 53.5 42 68 55.0 43 59 51.0 40 63 51.5 39 60 49.5 41 57 49.0 33 58 45.5 33 54 43.5 29 52 40.5 33 52 42.5

12/04 37 68 52.5 37 67 52.0 40 70 55.0 44 63 53.5 42 66 54.0 39 60 49.5 42 56 49.0 34 53 43.5 37 56 46.5 38 51 44.5 35 53 44.0 35 54 44.5

12/05 36 69 52.5 35 72 53.5 43 63 53.0 42 67 54.5 41 60 50.5 42 56 49.0 32 54 43.0 30 54 42.0 35 51 43.0 39 54 46.5 39 56 47.5 39 53 46.0

12/06 31 73 52.0 44 56 50.0 38 68 53.0 41 56 48.5 39 55 47.0 30 54 42.0 30 51 40.5 34 51 42.5 41 56 48.5 43 59 51.0 39 55 47.0 39 56 47.5

12/07 43 48 45.5 42 66 54.0 40 55 47.5 38 54 46.0 30 54 42.0 30 49 39.5 36 49 42.5 38 50 44.0 42 51 46.5 37 50 43.5 37 52 44.5 36 55 45.5

12/08 42 71 56.5 49 52 50.5 39 55 47.0 31 57 44.0 29 50 39.5 37 47 42.0 39 50 44.5 34 50 42.0 32 49 40.5 39 50 44.5 33 54 43.5 37 54 45.5

12/09 49 51 50.0 47 56 51.5 30 55 42.5 30 49 39.5 38 47 42.5 39 49 44.0 33 48 40.5 29 45 37.0 38 50 44.0 41 53 47.0 35 57 46.0 38 56 47.0

12/10 37 57 47.0 34 55 44.5 29 48 38.5 37 48 42.5 40 50 45.0 36 48 42.0 32 45 38.5 36 49 42.5 36 53 44.5 38 53 45.5 32 54 43.0 35 57 46.0

12/11 31 57 44.0 33 47 40.0 37 48 42.5 40 50 45.0 34 49 41.5 31 44 37.5 36 48 42.0 31 53 42.0 33 54 43.5 39 53 46.0 32 56 44.0 37 58 47.5

12/12 32 47 39.5 41 48 44.5 41 50 45.5 33 49 41.0 29 44 36.5 36 48 42.0 29 50 39.5 28 50 39.0 34 51 42.5 42 54 48.0 34 52 43.0 35 57 46.0

12/13 41 47 44.0 47 50 48.5 31 48 39.5 29 43 36.0 36 48 42.0 28 51 39.5 29 50 39.5 32 53 42.5 33 51 42.0 38 54 46.0 36 56 46.0 38 57 47.5

12/14 43 49 46.0 39 48 43.5 29 44 36.5 36 48 42.0 29 52 40.5 32 50 41.0 32 50 41.0 35 47 41.0 40 53 46.5 39 50 44.5 34 50 42.0 37 53 45.0

12/15 33 49 41.0 35 40 37.5 36 47 41.5 28 51 39.5 29 51 40.0 32 47 39.5 35 46 40.5 35 48 41.5 41 51 46.0 37 53 45.0 35 53 44.0 36 51 43.5

12/16 34 56 45.0 44 48 46.0 28 52 40.0 28 51 39.5 29 44 36.5 34 44 39.0 36 46 41.0 36 49 42.5 37 51 44.0 38 52 45.0 33 51 42.0 38 50 44.0

12/17 44 48 46.0 28 53 40.5 28 52 40.0 30 50 40.0 32 48 40.0 36 46 41.0 38 48 43.0 41 50 45.5 43 53 48.0 41 52 46.5 36 50 43.0 37 53 45.0

12/18 31 56 43.5 34 52 43.0 29 49 39.0 32 49 40.5 35 45 40.0 37 47 42.0 39 50 44.5 37 47 42.0 41 53 47.0 39 51 45.0 37 54 45.5 35 58 46.5

12/19 29 54 41.5 44 47 45.5 33 49 41.0 34 45 39.5 38 49 43.5 39 51 45.0 34 47 40.5 36 46 41.0 35 51 43.0 35 51 43.0 30 50 40.0 33 51 42.0

12/20 37 41 39.0 43 49 46.0 30 50 40.0 37 49 43.0 40 50 45.0 33 47 40.0 36 47 41.5 31 45 38.0 39 52 45.5 37 51 44.0 35 54 44.5 35 57 46.0

12/21 34 52 43.0 29 52 40.5 38 50 44.0 41 52 46.5 34 47 40.5 36 47 41.5 31 46 38.5 32 45 38.5 36 47 41.5 37 51 44.0 33 54 43.5 37 52 44.5

12/22 29 44 36.5 41 47 44.0 41 52 46.5 35 49 42.0 36 48 42.0 31 45 38.0 34 47 40.5 31 42 36.5 32 51 41.5 37 50 43.5 34 52 43.0 35 56 45.5

12/23 43 46 44.5 44 53 48.5 36 50 43.0 37 49 43.0 31 45 38.0 31 45 38.0 27 42 34.5 29 43 36.0 37 54 45.5 40 54 47.0 37 58 47.5 39 58 48.5

12/24 44 49 46.5 43 50 46.5 37 48 42.5 31 44 37.5 32 45 38.5 22 40 31.0 24 41 32.5 23 44 33.5 25 51 38.0 38 51 44.5 31 51 41.0 34 54 44.0

12/25 43 56 49.5 40 48 44.0 30 44 37.0 29 44 36.5 23 39 31.0 28 45 36.5 25 46 35.5 27 48 37.5 35 54 44.5 40 50 45.0 34 53 43.5 34 55 44.5

12/26 40 50 45.0 34 44 39.0 33 45 39.0 24 38 31.0 27 44 35.5 25 47 36.0 28 47 37.5 25 46 35.5 32 52 42.0 39 51 45.0 36 52 44.0 40 55 47.5

12/27 34 46 40.0 35 45 40.0 26 39 32.5 30 44 37.0 26 46 36.0 29 49 39.0 26 47 36.5 26 44 35.0 36 51 43.5 43 49 46.0 38 54 46.0 36 51 43.5

12/28 35 51 43.0 36 39 37.5 32 44 38.0 25 46 35.5 29 48 38.5 25 48 36.5 26 44 35.0 33 46 39.5 44 51 47.5 36 50 43.0 35 52 43.5 34 59 46.5

12/29 36 39 37.5 32 43 37.5 28 46 37.0 27 48 37.5 27 51 39.0 26 48 37.0 32 48 40.0 41 50 45.5 39 51 45.0 42 53 47.5 36 56 46.0 37 55 46.0

12/30 32 45 38.5 31 47 39.0 27 48 37.5 27 51 39.0 26 47 36.5 33 49 41.0 40 50 45.0 43 53 48.0 40 52 46.0 42 54 48.0 39 57 48.0 37 54 45.5

12/31 31 50 40.5 29 49 39.0 27 50 38.5 26 45 35.5 31 47 39.0 42 51 46.5 45 53 49.0 44 55 49.5 41 58 49.5 43 56 49.5 40 59 49.5 39 60 49.5

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

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

Redding (RDD) Daily Air Temperatures (°F)

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

35

38

41

44

47

50

53

56

59

62

65

46

47

48

49

50

51

52

53

54

55

56

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 01/12/2022 at 0818

Latest Profile Date: 01/11/2022

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

2021

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 - 2021

<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 (1998-2020) 2014 2015 2016 2019 2021
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 (1998-2020) 2014 2015 2016 2019 2021
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 (1998-2020) 2014 2015 2016 2019 2021
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 (1998-2020)

2021 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 (1998-2020)

2021 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 (1998-2020)

2021 95 90 75 50 25 10 5
Dec-31

2021 ≤52° ≤50° ≤48° Abs. Avg. ≤52° ≤50° ≤48° Abs. Avg.

1998 1460 -215 209 628 138 -20 84 81

1999 687 -507 -29 408 65 -48 -12 41

2000 334 -738 -182 418 31 -70 -73 58

2001 214 47 -65 109 20 4 -26 17

2002 1699 -446 -13 719 160 -42 -5 69

2003 1782 -644 -236 887 168 -61 -95 108

2004 -90 -353 -105 183 -9 -33 -42 28

2005 1355 -381 -89 608 128 -36 -36 67

2006 1435 -497 -31 654 135 -47 -12 65

2007 536 -787 -158 494 50 -74 -63 63

2008 -168 -168 -123 153 -16 -16 -49 27

2009 464 -597 -21 361 44 -56 -8 36

2010 1847 -517 -222 862 174 -49 -89 104

2011 1258 -507 145 637 119 -48 58 75

2012 1351 -446 45 614 127 -42 18 62

2013 109 -714 -52 292 10 -68 -21 33

2014 372 -802 -248 474 35 -76 -100 70

2015 -94 -114 23 77 -9 -11 9 10

2016 845 630 34 503 80 60 14 51

2017 -174 -559 65 266 -16 -53 26 32

2018 -576 -838 -239 551 -54 -79 -96 77

2019 -111 -439 5 185 -10 -42 2 18

2020 258 -786 -189 411 24 -74 -76 58

2021 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 01/13/2022 at 1021

Latest Profile Date: 01/12/2022

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

2021

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 - 2021

<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 (2000-2020) 2014 2015 2016 2019 2021
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 (2000-2020) 2014 2015 2016 2019 2021
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 (2000-2020) 2014 2015 2016 2019 2021
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 (2000-2020)

2021 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 (2000-2020)

2021 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 (2000-2020)

2021 95 90 75 50 25 10 5
Dec-31

2021 ≤52° ≤50° ≤48° Abs. Avg. ≤52° ≤50° ≤48° Abs. Avg.

2000 1183 1194 -138 838 225 232 -28 161

2001 547 511 454 504 104 99 91 98

2002 824 818 768 803 157 159 153 156

2003 1276 667 536 826 243 130 107 160

2004 966 252 84 434 184 49 17 83

2005 1095 1045 956 1032 208 203 190 201

2006 1262 1273 393 976 240 247 78 188

2007 666 656 638 653 127 127 127 127

2008 247 237 233 239 47 46 46 46

2009 393 37 -13 148 75 7 -3 28

2010 1086 1080 1069 1078 207 210 213 210

2011 1424 498 336 753 271 97 67 145

2012 1012 1002 974 996 192 195 194 194

2013 443 427 408 426 84 83 81 83

2014 285 258 -385 309 54 50 -77 60

2015 -22 -11 -449 161 -4 -2 -89 32

2016 777 169 85 344 148 33 17 66

2017 1110 1096 -129 779 211 213 -26 150

2018 971 536 452 653 185 104 90 126

2019 1428 1027 927 1127 271 199 185 219

2020 732 350 292 458 139 68 58 88

2021 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 01/13/2022 at 1027

Latest Profile Date: 01/12/2022

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

2021

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 - 2021

<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 (2000-2020) 2014 2015 2016 2019 2021
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 (2000-2020) 2014 2015 2016 2019 2021
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 (2000-2020) 2014 2015 2016 2019 2021
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 (2000-2020)

2021 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 (2000-2020)

2021 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 (2000-2020)

2021 95 90 75 50 25 10 5
Dec-31

2021 ≤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