Report Generated 03/01/2021 at 0826

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

February - 2021
Shasta 

Generation 

Spring 

Creek P.P.

Keswick 

Total BSF RDB

Jan 2775 223 3275 46.5 48.7

02/01 50.3 49.5 46.1 49.0 49.1 49.2 48.9 49.2 49.4 49.2 45.8 44.1 43.2 43.0 2333 564 3290 50.5 49.1 50.2

02/02 50.2 49.4 46.4 49.2 49.4 49.8 49.1 49.8 ? 50.3 50.4 46.3 44.3 43.7 44.1 3040 290 3284 47.0 50.7 53.4

02/03 50.0 49.3 46.3 49.1 49.1 49.0 47.6 48.0 48.3 48.6 45.1 44.2 43.4 43.6 2756 282 3263 45.0 44.2 44.9

02/04 49.8 49.3 46.4 49.1 49.2 49.1 47.6 47.5 47.7 47.6 45.0 44.2 43.0 43.3 1754 578 3285 53.0 48.9 49.8

02/05 # - ! - 46.7 49.0 49.2 49.5 48.6 48.5 48.5 48.2 45.7 44.3 42.8 42.9 2885 167 3292 56.5 51.3 53.1

02/06 # - # - 47.3 49.0 49.2 49.5 49.2 49.4 49.5 49.4 46.0 44.4 43.3 43.3 2938 77 3291 ↑ 58.5 53.8 54.3

02/07 # - # - 47.2 49.1 49.3 49.5 49.1 49.4 49.6 49.8 45.9 44.4 43.5 43.2 3089 124 3292 53.5 48.1 50.6

02/08 # - ! - 47.5 49.2 49.3 49.4 49.0 49.2 49.4 49.5 45.7 44.6 43.0 42.6 2917 77 3295 49.5 46.6 48.9

02/09 50.0 49.1 47.3 49.3 49.5 49.8 49.7 50.0 50.2 50.1 46.3 44.8 44.0 43.5 2723 77 3295 52.0 50.3 53.5

02/10 49.6 49.1 47.3 49.4 49.7 50.0 50.0 50.4 50.7 50.9 46.3 44.9 44.4 44.3 2927 77 3282 52.0 49.7 53.5

02/11 49.6 49.0 47.2 49.5 49.5 49.5 49.8 50.3 50.6 50.7 46.1 45.0 44.2 43.9 3251 77 3261 48.0 47.8 48.8

02/12 49.7 49.0 46.7 49.4 49.7 50.1 49.6 49.9 50.2 50.3 ? 46.3 45.2 44.0 43.9 3117 134 3290 51.0 50.3 51.7

02/13 49.7 48.9 46.9 49.5 49.8 50.3 50.6 50.8 51.2 51.2 46.8 45.4 45.5 45.6 3078 77 3262 52.0 52.3 54.6

02/14 49.8 49.0 ? 47.2 49.4 49.5 49.5 49.4 49.8 50.3 50.7 ? 46.1 45.4 43.2 43.7 3149 77 3265 47.5 45.3 48.1

02/15 49.4 48.9 ? 46.6 49.4 49.6 49.6 49.2 49.4 49.7 49.8 46.9 45.7 44.0 43.9 2157 542 3231 48.0 47.7 48.9

02/16 49.5 49.0 46.7 49.1 49.4 49.6 49.2 49.3 49.5 49.5 46.1 45.7 44.4 44.7 2802 330 3213 47.5 45.0 48.7

02/17 49.8 49.0 46.7 49.1 49.3 49.4 49.1 49.2 49.4 49.6 46.0 45.8 44.3 44.1 2603 234 3224 47.0 46.5 49.3

02/18 49.5 48.9 ? 46.5 48.9 48.9 48.7 48.4 48.5 48.8 48.9 45.7 45.7 43.2 43.4 2573 510 3249 42.5 41.6 44.4

02/19 49.3 48.8 ? 46.6 48.6 48.9 48.9 48.4 48.4 48.5 48.4 46.3 45.8 43.3 43.2 2629 586 3293 48.0 45.2 47.0

02/20 49.2 48.8 # - 48.6 49.0 49.3 49.1 49.4 49.5 49.3 46.5 45.9 44.6 ? 44.4 2592 374 3301 50.0 48.4 50.8

02/21 49.7 48.9 # - 48.9 49.2 49.4 49.5 49.8 50.2 50.3 46.7 45.9 44.9 44.9 2726 612 3304 53.0 52.2 54.4

02/22 49.7 48.9 ! - 49.0 49.4 49.9 50.4 50.7 50.9 51.0 47.4 46.0 45.9 45.9 3209 161 3295 62.0 58.0 58.9

02/23 49.5 49.0 47.9 49.2 49.6 50.1 50.9 51.6 52.0 52.0 47.5 46.1 46.4 46.5 3007 77 3304 60.0 58.6 61.0

02/24 49.6 49.1 47.9 49.3 49.5 49.6 49.9 50.4 50.8 51.4 46.6 45.9 45.2 45.6 2706 77 3301 51.5 51.1 52.9

02/25 49.5 49.1 48.0 49.3 49.5 ? 49.8 49.5 49.6 49.8 50.1 46.9 46.1 44.4 44.6 3315 77 3308 56.5 48.9 53.1

02/26 49.7 49.1 47.9 49.4 49.6 49.8 50.0 50.3 50.4 50.4 46.9 46.3 45.0 44.8 2648 79 3286 49.0 47.2 52.3

02/27 49.9 49.1 47.4 49.3 49.5 49.8 49.7 50.0 50.3 50.5 46.8 46.4 44.7 44.8 2726 263 3304 47.0 48.2 51.8

02/28 49.6 49.2 47.9 49.5 49.7 50.1 50.2 50.5 50.7 50.8 47.1 46.6 45.2 45.0 2790 77 3304 58.0 55.0 55.4

-

-

-

Feb 2801 238 3281 49.3 51.6

78440 6677 91864

Legend Notes 155583 13244 182208

? = 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

49.6

49.4

49.3

D

A

T

E

51.6 50.9

CCR2 TCD SAC 1 SHD SPP1 KWK BSF

49.7 49.1 47.1 49.2 49.4

48.0 50.6 50.5 50.4 49.3 49.5

Mean Daily 

Release (CFS)

NFH

43.4

Mean Daily Water Temperatures (°F)

45.4

Mean Daily Air 

Temperatures (°F)

RDD

47.9

Total CFS

49.6 44.2 51.3

IGO3

49.9

Total AF

49.2 46.6

RDB

49.9 46.3

LWS

45.3 44.2

DGC

43.9

JLF BND

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

02/01 44 54 49.0 44 55 49.5 44 54 49.0 33 52 42.5 33 60 46.5 35 65 50.0 39 66 52.5 40 66 53.0 41 63 52.0 39 61 50.0 40 60 50.0 37 63 50.0

02/02 43 58 50.5 38 53 45.5 33 46 39.5 31 57 44.0 33 63 48.0 37 66 51.5 37 65 51.0 38 63 50.5 43 58 50.5 43 64 53.5 44 65 54.5 43 66 54.5

02/03 37 57 47.0 40 51 45.5 35 60 47.5 35 65 50.0 39 65 52.0 37 64 50.5 39 59 49.0 40 58 49.0 41 59 50.0 40 57 48.5 39 59 49.0 40 59 49.5

02/04 36 54 45.0 43 60 51.5 37 65 51.0 41 66 53.5 36 64 50.0 36 59 47.5 36 59 47.5 36 62 49.0 39 63 51.0 44 65 54.5 43 67 55.0 43 68 55.5

02/05 43 63 53.0 43 65 54.0 38 66 52.0 36 66 51.0 38 63 50.5 40 61 50.5 38 62 50.0 38 61 49.5 35 61 48.0 40 63 51.5 38 63 50.5 40 65 52.5

02/06 41 72 56.5 46 72 59.0 35 70 52.5 35 61 48.0 40 60 50.0 39 61 50.0 39 58 48.5 42 54 48.0 38 56 47.0 39 58 48.5 41 59 50.0 39 64 51.5

02/07 41 76 58.5 34 72 53.0 36 62 49.0 40 61 50.5 40 64 52.0 40 56 48.0 39 53 46.0 38 53 45.5 42 60 51.0 41 59 50.0 39 60 49.5 40 62 51.0

02/08 33 74 53.5 36 62 49.0 40 64 52.0 41 65 53.0 45 56 50.5 43 57 50.0 42 53 47.5 36 53 44.5 44 56 50.0 44 61 52.5 42 58 50.0 43 63 53.0

02/09 36 63 49.5 41 64 52.5 39 67 53.0 45 58 51.5 45 61 53.0 44 53 48.5 38 59 48.5 40 54 47.0 38 63 50.5 41 59 50.0 40 61 50.5 41 62 51.5

02/10 40 64 52.0 38 69 53.5 41 55 48.0 39 58 48.5 43 54 48.5 35 59 47.0 41 56 48.5 39 61 50.0 40 62 51.0 41 60 50.5 43 60 51.5 40 62 51.0

02/11 37 67 52.0 45 54 49.5 38 60 49.0 42 59 50.5 35 57 46.0 41 57 49.0 39 61 50.0 37 61 49.0 42 57 49.5 43 58 50.5 44 60 52.0 40 64 52.0

02/12 45 51 48.0 43 59 51.0 44 60 52.0 35 57 46.0 41 58 49.5 36 61 48.5 35 62 48.5 41 56 48.5 44 58 51.0 39 60 49.5 40 64 52.0 42 67 54.5

02/13 43 59 51.0 43 60 51.5 35 55 45.0 41 58 49.5 34 62 48.0 35 62 48.5 39 59 49.0 40 58 49.0 39 59 49.0 42 64 53.0 44 67 55.5 47 68 57.5

02/14 43 61 52.0 45 56 50.5 42 58 50.0 34 60 47.0 33 61 47.0 40 54 47.0 42 59 50.5 38 61 49.5 44 65 54.5 45 70 57.5 47 71 59.0 45 67 56.0

02/15 41 54 47.5 43 58 50.5 37 60 48.5 36 62 49.0 38 55 46.5 44 58 51.0 36 58 47.0 37 62 49.5 43 66 54.5 46 68 57.0 44 67 55.5 41 64 52.5

02/16 44 52 48.0 48 60 54.0 37 61 49.0 37 54 45.5 43 58 50.5 37 58 47.5 35 64 49.5 39 71 55.0 43 67 55.0 41 66 53.5 39 64 51.5 40 65 52.5

02/17 34 61 47.5 37 62 49.5 37 53 45.0 43 55 49.0 39 60 49.5 38 66 52.0 41 72 56.5 43 71 57.0 42 66 54.0 39 60 49.5 41 64 52.5 41 69 55.0

02/18 34 60 47.0 37 54 45.5 40 56 48.0 36 58 47.0 35 66 50.5 39 72 55.5 43 70 56.5 38 64 51.0 46 61 53.5 42 54 48.0 39 60 49.5 39 67 53.0

02/19 37 48 42.5 43 55 49.0 37 58 47.5 36 66 51.0 39 73 56.0 42 65 53.5 36 63 49.5 38 63 50.5 39 56 47.5 37 61 49.0 40 60 50.0 40 64 52.0

02/20 43 53 48.0 41 58 49.5 36 66 51.0 40 72 56.0 42 65 53.5 36 63 49.5 36 64 50.0 37 64 50.5 46 68 57.0 42 67 54.5 41 62 51.5 42 63 52.5

02/21 39 61 50.0 43 67 55.0 41 72 56.5 43 68 55.5 37 64 50.5 36 64 50.0 35 64 49.5 35 62 48.5 43 66 54.5 39 68 53.5 42 70 56.0 44 68 56.0

02/22 39 67 53.0 NR 76 - 45 71 58.0 37 61 49.0 34 68 51.0 36 64 50.0 35 61 48.0 35 65 50.0 39 63 51.0 36 68 52.0 42 67 54.5 43 69 56.0

02/23 47 77 62.0 NR 73 - 40 62 51.0 35 70 52.5 35 65 50.0 35 60 47.5 36 65 50.5 36 57 46.5 42 64 53.0 41 70 55.5 44 69 56.5 43 73 58.0

02/24 47 73 60.0 NR 60 - 36 68 52.0 36 64 50.0 36 62 49.0 37 67 52.0 37 63 50.0 38 66 52.0 41 61 51.0 46 59 52.5 45 60 52.5 42 65 53.5

02/25 42 61 51.5 47 69 58.0 37 65 51.0 42 63 52.5 37 69 53.0 37 63 50.0 36 65 50.5 37 66 51.5 44 67 55.5 45 65 55.0 46 65 55.5 41 66 53.5

02/26 43 70 56.5 34 62 48.0 34 61 47.5 37 69 53.0 37 63 50.0 36 65 50.5 36 66 51.0 39 64 51.5 45 64 54.5 41 61 51.0 41 63 52.0 42 65 53.5

02/27 32 66 49.0 33 62 47.5 38 69 53.5 37 63 50.0 38 68 53.0 38 70 54.0 41 66 53.5 42 67 54.5 45 63 54.0 44 62 53.0 40 62 51.0 39 65 52.0

02/28 30 64 47.0 45 70 57.5 36 65 50.5 38 68 53.0 38 70 54.0 39 69 54.0 41 67 54.0 43 62 52.5 42 68 55.0 43 60 51.5 40 64 52.0 39 67 53.0

-

-

-

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

40

43

46

49

52

55

58

61

64

47

48

49

50

51

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

Air Temperature (°F)

Water Temperature (°F)

Mean Daily Temperatures

TCD KWK SAC CCR BSF RDD (Air)

4
Updated 02/10/2021 at 1425

Latest Profile Date: 02/10/2021

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
Feb-10

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

1998 129 166 -141 145 6 8 -24 12

1999 1387 784 2188 1453 63 37 369 156

2000 1721 1080 143 981 79 51 24 51

2001 1018 141 1519 893 47 7 256 103

2002 1435 1492 529 1152 66 70 89 75

2003 1322 748 455 841 60 35 77 57

2004 1497 1323 181 1001 68 62 31 54

2005 748 804 337 630 34 38 57 43

2006 1381 1437 328 1049 63 67 55 62

2007 1234 1291 450 991 56 61 76 64

2008 127 183 1608 639 6 9 271 95

2009 -742 -685 11 479 -34 -32 2 23

2010 631 688 391 570 29 32 66 42

2011 1340 -172 380 631 61 -8 64 44

2012 936 993 438 789 43 47 74 54

2013 1331 1307 747 1128 61 61 126 83

2014 -496 -546 -7 350 -23 -26 -1 16

2015 -175 -1109 -57 447 -8 -52 -10 23

2016 313 146 191 217 14 7 32 18

2017 1892 1948 1798 1879 86 91 303 160

2018 142 -800 -126 356 6 -38 -21 22

2019 929 986 33 650 42 46 6 31

2020 1317 -894 101 771 60 -42 17 40

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 02/19/2021 at 0909

Latest Profile Date: 02/17/2021

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
Feb-17

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

2000 813 813 813 813 64 64 64 64

2001 437 437 437 437 35 35 35 35

2002 443 443 443 443 35 35 35 35

2003 610 610 602 607 48 48 48 48

2004 698 698 698 698 55 55 55 55

2005 372 320 293 328 29 25 23 26

2006 801 801 768 790 63 63 61 62

2007 591 591 578 587 47 47 46 46

2008 192 192 192 192 15 15 15 15

2009 -210 -210 -210 210 -17 -17 -17 17

2010 -150 -157 -159 155 -12 -12 -13 12

2011 584 584 584 584 46 46 46 46

2012 705 705 705 705 56 56 56 56

2013 698 698 698 698 55 55 55 55

2014 -87 -87 -119 97 -7 -7 -9 8

2015 -286 -336 -447 357 -23 -27 -35 28

2016 -469 -469 -472 470 -37 -37 -37 37

2017 498 498 491 496 39 39 39 39

2018 523 523 523 523 41 41 41 41

2019 388 388 388 388 31 31 31 31

2020 751 751 688 730 59 59 54 58

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 02/19/2021 at 0916

Latest Profile Date: 02/18/2021

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
Feb-18

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

2000 1 1 1 1 1 1 1 1

2001 13 13 13 13 7 7 7 7

2002 -1 -1 -1 1 0 0 0 0

2003 -1 -1 -1 1 0 0 0 0

2004 -1 -1 -1 1 0 0 0 0

2005 3 3 3 3 1 1 1 1

2006 0 0 0 0 0 0 0 0

2007 -1 -1 -1 1 0 0 0 0

2008 1 1 1 1 0 0 0 0

2009 4 4 4 4 2 2 2 2

2010 13 13 13 13 6 6 6 6

2011 -1 -1 -1 1 -1 -1 -1 1

2012 -13 -14 -17 15 -6 -7 -8 7

2013 -1 -1 -1 1 -1 -1 -1 1

2014 2 2 2 2 1 1 1 1

2015 -1 -1 -1 1 -1 -1 -1 1

2016 9 9 9 9 4 4 4 4

2017 28 28 28 28 14 14 14 14

2018 -1 -1 -1 1 -1 -1 -1 1

2019 10 10 10 10 5 5 5 5

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