Report Generated 12/01/2021 at 0723

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

November - 2021
Shasta 

Generation 

Spring 

Creek P.P.

Keswick 

Total BSF RDB

Oct 4926 1179 6453 58.5 60.4

11/01 59.3 59.0 # - 58.9 58.9 59.0 59.2 59.3 59.7 59.6 55.2 54.4 53.2 53.8 4968 410 4829 57.5 57.3 57.3

11/02 59.4 59.2 # - 58.7 59.0 59.5 59.4 59.3 59.6 59.4 56.4 54.5 53.6 53.4 3006 1493 4617 61.0 59.8 60.6

11/03 59.2 59.1 # - 58.3 58.4 58.6 58.8 58.9 59.5 59.4 55.2 54.4 52.7 52.8 3316 674 4412 57.5 56.1 59.3

11/04 59.0 58.8 # - 58.4 58.6 59.0 59.2 59.2 59.7 59.5 56.0 54.7 53.7 52.6 3430 512 4221 59.5 60.8 61.0

11/05 59.1 58.6 # - 58.5 58.3 58.1 58.0 57.9 58.3 58.3 54.7 54.5 52.4 51.4 2666 641 4003 52.0 50.4 51.5

11/06 59.0 58.4 # - 58.2 58.1 58.0 57.7 57.4 57.8 57.2 54.5 54.4 51.8 51.3 3197 500 3884 51.5 52.5 53.4

11/07 58.6 58.2 # - 57.8 57.6 57.4 56.6 56.1 56.4 56.2 53.2 53.9 50.2 49.9 3111 229 3806 48.5 44.9 48.0

11/08 58.6 58.0 # - 57.6 57.3 56.9 55.9 55.2 55.4 55.0 53.2 53.8 49.1 48.1 3707 251 3706 45.5 45.3 48.7

11/09 58.3 57.7 # - 57.4 56.9 56.7 54.7 54.5 54.8 54.4 53.8 53.9 49.6 48.9 3511 75 3607 51.5 52.6 52.8

11/10 58.4 58.1 # - 57.5 57.5 57.6 56.5 55.8 56.1 55.0 54.9 53.9 51.2 50.6 1730 1178 3506 56.5 54.9 55.3

11/11 57.9 57.6 # - 57.3 57.4 57.8 57.5 57.0 57.4 56.7 55.1 53.5 52.3 51.0 2908 411 3409 63.0 56.6 58.4

11/12 57.8 57.2 # - 57.4 57.5 57.7 57.4 56.9 57.5 57.1 54.7 53.1 52.4 ? 51.9 3490 76 3307 57.0 52.3 52.2

11/13 57.6 57.3 # - 57.7 57.7 57.9 57.5 57.1 57.4 57.0 54.5 53.0 51.8 ? 52.0 2623 164 3257 65.0 57.2 55.7

11/14 57.5 57.0 # - 57.5 57.6 57.8 57.7 57.4 57.9 57.3 54.5 53.2 51.6 51.8 2938 76 3262 58.0 53.8 54.0

11/15 57.2 56.7 # - 57.3 57.3 57.1 57.1 56.9 57.4 57.1 54.1 53.4 51.8 51.8 2860 272 3262 52.0 52.0 52.3

11/16 57.4 56.8 # - 57.3 57.2 57.1 57.1 56.8 57.0 56.6 53.8 53.4 51.4 51.6 2458 401 3258 58.5 57.2 58.7

11/17 57.4 56.8 # - 56.8 56.8 56.5 55.8 55.4 55.7 55.8 52.9 53.1 49.2 49.7 2883 75 3254 56.0 52.3 54.3

11/18 57.1 56.4 # - 56.4 56.3 55.8 55.4 54.9 55.2 54.7 53.0 53.2 48.3 48.0 2883 75 3254 48.5 47.9 49.6

11/19 57.0 56.1 # - 56.2 56.2 56.1 55.7 55.1 55.3 54.6 53.9 53.5 50.0 49.6 2935 307 3277 53.5 50.9 51.5

11/20 56.7 56.1 # - 56.1 56.0 55.7 55.0 54.5 54.6 54.5 53.1 53.1 50.5 49.9 3025 200 3274 61.0 52.3 54.9

11/21 56.7 56.0 # - 56.0 55.9 55.7 54.7 54.0 ! - 53.7 52.8 52.6 48.7 48.5 2768 74 3245 56.5 48.6 54.0

11/22 56.4 55.8 # - 55.7 55.6 55.4 54.5 53.8 ! - 53.4 52.4 52.3 47.6 47.0 2830 74 3268 50.5 46.0 50.5

11/23 56.1 55.5 # - 55.5 55.4 55.1 54.5 53.9 ! - 53.4 52.5 52.2 47.3 47.0 2543 74 3279 52.5 49.2 52.7

11/24 56.1 55.5 # - 55.3 55.2 54.6 53.7 53.1 ! - 52.8 52.0 51.6 46.5 45.9 2718 74 3275 55.5 51.7 53.4

11/25 56.0 55.2 # - 55.1 54.9 54.6 53.4 52.6 ! - 52.2 51.9 51.5 46.0 45.1 3121 74 3278 47.0 44.1 49.0

11/26 55.6 55.0 # - 55.0 55.0 54.8 54.0 53.2 ! - 52.5 52.3 51.5 47.1 46.1 3474 74 3283 54.0 49.1 52.4

11/27 55.6 54.9 # - 55.0 55.0 54.9 54.2 53.7 ! - 53.2 53.0 51.3 47.6 46.9 2900 74 3294 56.0 51.0 52.9

11/28 55.6 54.7 # - 55.0 55.1 55.2 54.7 54.3 ! - 53.7 52.8 51.4 48.8 48.3 2998 74 3304 57.5 51.7 53.5

11/29 55.5 54.4 # - 55.0 55.0 55.0 54.6 54.2 ! - 54.1 52.3 51.3 49.2 48.9 3275 74 3308 57.0 50.6 54.2

11/30 55.6 54.7 # - 54.9 55.0 55.1 54.4 54.0 ! - 54.0 52.2 51.2 48.4 48.5 2708 88 3307 ↑ 60.0 52.4 57.0

-

Nov 3033 292 3542 52.0 54.0

90980 8774 106246

Legend Notes 180455 17403 210735

? = 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

59.6 55.0

RDB

55.6 53.7

LWS

53.1 50.1

DGC

52.7

Mean Daily Air 

Temperatures (°F)

RDD

61.3

Total CFS

49.7 55.3

Mean Daily 

Release (CFS)

NFH

54.0

Mean Daily Water Temperatures (°F)

52.9

JLF BND IGO

56.8

BSF

- 59.2 59.2 59.4 59.4 59.4 59.7

D

A

T

E

61.4 60.6

SAC CCR 2 TCD1 SHD SPP1 KWK

57.4 56.8 - 56.8 56.7 56.2 55.7 57.1

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

11/01 51 65 58.0 56 59 57.5 50 65 57.5 44 67 55.5 49 63 56.0 43 63 53.0 43 62 52.5 44 61 52.5 48 63 55.5 47 59 53.0 45 62 53.5 41 66 53.5

11/02 55 60 57.5 57 64 60.5 43 67 55.0 50 63 56.5 41 63 52.0 42 60 51.0 44 59 51.5 43 56 49.5 45 59 52.0 43 60 51.5 42 62 52.0 42 67 54.5

11/03 53 69 61.0 47 67 57.0 53 64 58.5 41 62 51.5 46 59 52.5 40 58 49.0 37 53 45.0 42 54 48.0 46 66 56.0 46 68 57.0 46 70 58.0 47 68 57.5

11/04 47 68 57.5 60 64 62.0 41 61 51.0 45 58 51.5 37 58 47.5 38 56 47.0 40 52 46.0 43 57 50.0 43 71 57.0 45 71 58.0 48 71 59.5 45 69 57.0

11/05 50 69 59.5 47 59 53.0 46 58 52.0 35 58 46.5 34 54 44.0 41 53 47.0 43 57 50.0 44 64 54.0 47 72 59.5 51 73 62.0 49 70 59.5 47 62 54.5

11/06 47 57 52.0 49 57 53.0 35 59 47.0 34 54 44.0 41 54 47.5 42 58 50.0 41 65 53.0 43 70 56.5 48 72 60.0 48 73 60.5 47 71 59.0 47 69 58.0

11/07 42 61 51.5 35 59 47.0 37 57 47.0 44 54 49.0 42 59 50.5 41 69 55.0 44 73 58.5 44 72 58.0 46 71 58.5 45 69 57.0 46 66 56.0 45 65 55.0

11/08 35 62 48.5 35 58 46.5 42 54 48.0 45 57 51.0 45 69 57.0 45 71 58.0 45 72 58.5 47 71 59.0 45 72 58.5 44 66 55.0 47 67 57.0 45 63 54.0

11/09 35 56 45.5 47 56 51.5 46 60 53.0 44 70 57.0 45 71 58.0 49 73 61.0 49 72 60.5 47 67 57.0 50 66 58.0 48 63 55.5 46 62 54.0 43 62 52.5

11/10 48 55 51.5 52 61 56.5 45 71 58.0 45 73 59.0 48 74 61.0 48 73 60.5 46 68 57.0 47 62 54.5 44 71 57.5 43 63 53.0 46 63 54.5 43 65 54.0

11/11 50 63 56.5 50 73 61.5 46 73 59.5 47 75 61.0 47 71 59.0 46 67 56.5 45 62 53.5 41 61 51.0 42 61 51.5 43 62 52.5 39 64 51.5 42 64 53.0

11/12 50 76 63.0 45 74 59.5 48 75 61.5 48 72 60.0 47 68 57.5 46 62 54.0 42 62 52.0 40 61 50.5 42 63 52.5 44 61 52.5 42 64 53.0 45 64 54.5

11/13 45 69 57.0 47 76 61.5 48 73 60.5 48 68 58.0 48 66 57.0 44 61 52.5 43 61 52.0 39 60 49.5 41 69 55.0 46 68 57.0 43 66 54.5 42 61 51.5

11/14 46 83 64.5 49 80 64.5 47 67 57.0 48 66 57.0 43 64 53.5 45 57 51.0 42 60 51.0 39 62 50.5 44 70 57.0 46 71 58.5 47 69 58.0 45 64 54.5

11/15 49 67 58.0 50 62 56.0 45 65 55.0 42 64 53.0 44 59 51.5 45 58 51.5 42 63 52.5 42 67 54.5 47 70 58.5 44 66 55.0 46 67 56.5 44 65 54.5

11/16 49 55 52.0 48 66 57.0 43 64 53.5 43 60 51.5 46 59 52.5 42 64 53.0 40 67 53.5 39 63 51.0 43 68 55.5 42 67 54.5 43 66 54.5 42 63 52.5

11/17 48 69 58.5 54 66 60.0 40 59 49.5 45 59 52.0 42 65 53.5 41 67 54.0 40 65 52.5 40 63 51.5 42 67 54.5 37 65 51.0 40 62 51.0 40 59 49.5

11/18 43 69 56.0 45 57 51.0 45 59 52.0 41 66 53.5 40 66 53.0 38 64 51.0 39 62 50.5 39 62 50.5 38 65 51.5 43 64 53.5 41 58 49.5 39 59 49.0

11/19 44 53 48.5 50 60 55.0 42 66 54.0 41 67 54.0 37 64 50.5 39 60 49.5 38 61 49.5 39 61 50.0 47 67 57.0 44 67 55.5 44 67 55.5 44 63 53.5

11/20 46 61 53.5 53 66 59.5 40 66 53.0 37 65 51.0 38 59 48.5 36 62 49.0 37 63 50.0 41 65 53.0 46 69 57.5 45 67 56.0 43 64 53.5 44 61 52.5

11/21 53 69 61.0 56 70 63.0 36 65 50.5 38 61 49.5 37 63 50.0 38 64 51.0 41 67 54.0 44 65 54.5 44 68 56.0 40 65 52.5 41 59 50.0 38 57 47.5

11/22 41 72 56.5 35 69 52.0 39 62 50.5 38 63 50.5 37 63 50.0 40 68 54.0 43 68 55.5 43 67 55.0 41 70 55.5 40 67 53.5 42 64 53.0 42 68 55.0

11/23 34 67 50.5 42 62 52.0 39 65 52.0 38 64 51.0 41 67 54.0 42 68 55.0 43 68 55.5 42 65 53.5 41 70 55.5 41 67 54.0 44 66 55.0 40 58 49.0

11/24 39 66 52.5 44 64 54.0 38 64 51.0 40 67 53.5 43 69 56.0 43 69 56.0 43 68 55.5 43 66 54.5 46 72 59.0 44 69 56.5 42 68 55.0 42 66 54.0

11/25 44 67 55.5 33 62 47.5 39 67 53.0 44 72 58.0 44 70 57.0 43 69 56.0 43 70 56.5 43 69 56.0 43 72 57.5 43 67 55.0 43 63 53.0 39 61 50.0

11/26 33 61 47.0 37 68 52.5 43 71 57.0 45 70 57.5 44 69 56.5 43 72 57.5 44 71 57.5 43 69 56.0 42 71 56.5 43 66 54.5 44 66 55.0 41 64 52.5

11/27 37 71 54.0 41 74 57.5 45 70 57.5 45 70 57.5 44 72 58.0 45 71 58.0 44 70 57.0 45 68 56.5 45 71 58.0 44 68 56.0 44 64 54.0 35 66 50.5

11/28 40 72 56.0 43 71 57.0 44 70 57.0 44 73 58.5 51 76 63.5 47 72 59.5 45 71 58.0 43 65 54.0 47 67 57.0 36 60 48.0 33 58 45.5 33 61 47.0

11/29 43 72 57.5 40 71 55.5 45 74 59.5 48 74 61.0 44 71 57.5 43 69 56.0 42 65 53.5 42 66 54.0 44 64 54.0 47 61 54.0 39 61 50.0 37 59 48.0

11/30 39 75 57.0 40 77 58.5 48 75 61.5 45 72 58.5 43 69 56.0 41 68 54.5 41 69 55.0 42 61 51.5 46 65 55.5 40 67 53.5 42 59 50.5 43 52 47.5

-

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

45

48

51

54

57

60

63

66

53

54

55

56

57

58

59

60

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 11/10/2021 at 1348

Latest Profile Date: 11/10/2021

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

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
Nov-10

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

1998 145 26 5 58 604 134 754 497

1999 374 314 247 312 1564 1632 38272 13822

2000 192 86 28 102 804 449 4416 1889

2001 84 59 49 64 349 308 7532 2730

2002 228 171 108 169 952 891 16693 6179

2003 241 83 20 114 1005 433 3051 1496

2004 55 35 29 40 231 181 4453 1622

2005 65 35 26 42 273 184 3962 1473

2006 278 222 134 211 1160 1153 20856 7723

2007 25 20 29 25 104 104 4492 1567

2008 14 11 19 15 57 56 3005 1039

2009 42 36 35 38 174 190 5444 1936

2010 412 243 123 259 1719 1263 19052 7345

2011 547 432 332 437 2284 2249 51602 18712

2012 299 251 166 239 1250 1305 25771 9442

2013 96 73 57 75 401 381 8864 3216

2014 28 6 8 14 118 33 1178 443

2015 47 34 7 29 198 177 1057 477

2016 385 322 175 294 1608 1677 27144 10143

2017 427 351 266 348 1785 1827 41304 14972

2018 132 85 29 82 553 441 4509 1834

2019 541 434 318 431 2259 2260 49409 17976

2020 90 39 13 48 377 205 2008 863

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 11/18/2021 at 1350

Latest Profile Date: 11/18/2021

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

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
Nov-18

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

2000 581 394 202 392 386 318 234 312

2001 352 287 185 275 234 232 213 226

2002 398 341 261 333 264 275 301 280

2003 669 349 159 392 444 282 184 303

2004 352 249 113 238 234 201 131 189

2005 782 643 401 609 519 519 463 500

2006 1339 555 415 770 889 448 480 606

2007 511 465 391 455 339 375 451 389

2008 106 56 32 65 71 45 36 51

2009 280 127 52 153 186 102 61 116

2010 727 615 448 597 483 496 517 499

2011 915 683 444 680 608 551 512 557

2012 705 665 578 649 468 537 668 557

2013 295 225 149 223 196 181 172 183

2014 -45 -39 -34 39 -30 -32 -39 34

2015 -30 -29 -67 42 -20 -24 -78 40

2016 386 119 73 193 256 96 85 146

2017 667 482 301 483 443 389 347 393

2018 698 586 480 588 463 473 555 497

2019 873 811 667 784 580 655 771 668

2020 468 399 253 373 311 322 292 308

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 11/17/2021 at 1347

Latest Profile Date: 11/17/2021

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

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
Nov-17

2021 ≤60° ≤58° ≤56° Abs. Avg. ≤60° ≤58° ≤56° Abs. Avg.

2000 -31 -33 -35 33 -16 -17 -18 17

2001 0 1 2 1 0 1 1 1

2002 -9 -10 -13 11 -5 -5 -7 5

2003 25 26 -64 38 13 13 -33 19

2004 27 28 30 28 13 14 15 14

2005 7 8 -120 45 4 4 -61 23

2006 -14 -14 -14 14 -7 -7 -7 7

2007 6 7 -101 38 3 4 -51 19

2008 4 5 7 5 2 3 3 3

2009 -18 -22 -43 28 -9 -11 -22 14

2010 13 -88 -96 66 6 -45 -49 33

2011 7 8 10 8 3 4 5 4

2012 6 -91 -106 68 3 -46 -54 34

2013 24 -38 -42 35 12 -19 -21 18

2014 -25 -39 -66 43 -12 -20 -34 22

2015 6 -148 -161 105 3 -75 -82 53

2016 13 -101 -114 76 6 -51 -58 39

2017 9 -30 -32 24 5 -15 -17 12

2018 17 18 -171 69 8 9 -87 35

2019 7 8 -111 42 3 4 -56 21

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