Report Generated 02/01/2021 at 0728

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

January - 2021
Shasta 

Generation 

Spring 

Creek P.P.

Keswick 

Total BSF RDB

Dec 3066 188 3419 45.1 47.9

01/01 52.4 51.8 48.9 51.6 51.5 51.2 50.2 49.7 # - 49.4 47.4 44.4 44.0 43.9 2723 213 3263 45.5 43.7 45.9

01/02 52.1 51.4 48.9 51.6 51.5 51.4 50.8 50.6 50.3 50.0 47.7 44.7 44.5 44.5 2871 124 3292 48.5 47.2 47.6

01/03 51.8 51.1 48.3 51.5 51.4 51.4 50.9 50.8 51.0 50.8 47.7 44.9 45.2 45.3 2477 228 3310 48.0 47.8 48.5

01/04 52.2 51.4 48.3 51.4 51.4 51.2 50.8 50.8 51.1 50.9 47.5 45.0 45.2 45.6 2738 150 3314 47.5 50.2 50.8

01/05 52.6 51.9 48.6 51.2 51.2 51.0 49.2 49.3 ? 49.6 50.3 46.6 44.9 43.7 44.1 2648 119 3307 46.0 44.2 47.3

01/06 52.5 51.8 48.4 50.8 50.8 50.4 49.3 49.1 49.2 48.9 46.6 45.0 43.5 43.0 3241 167 3312 41.5 41.2 43.5

01/07 52.4 51.7 48.7 50.8 50.6 50.2 48.8 48.5 48.6 48.4 46.7 45.3 43.6 43.4 3083 124 3281 44.0 41.0 43.9

01/08 52.2 51.6 48.0 51.1 51.0 50.9 50.0 49.8 49.8 49.0 47.1 45.3 43.9 43.8 2579 526 3260 47.5 46.6 48.0

01/09 52.1 51.4 47.8 51.0 50.9 50.7 49.3 49.1 49.2 49.3 46.6 45.3 43.4 43.1 2043 696 3295 47.5 42.6 46.6

01/10 52.0 51.3 48.8 50.8 50.7 50.6 49.7 49.4 49.4 48.9 47.0 45.5 43.9 43.2 2830 77 3307 45.0 44.2 46.2

01/11 52.0 51.2 48.5 50.9 50.8 50.7 49.7 49.4 49.5 49.2 47.0 45.6 44.9 44.4 3470 112 3289 45.0 43.7 45.7

01/12 ! - 51.2 48.6 51.0 50.9 50.8 50.2 50.1 50.2 49.7 47.2 45.6 44.9 44.6 - 77 3257 47.5 46.8 48.0

01/13 # - 51.1 48.2 51.2 51.2 51.4 51.0 51.1 51.3 50.8 47.6 45.9 45.8 44.2 - 109 3289 53.0 51.9 53.4

01/14 51.8 51.2 48.0 51.3 51.3 51.5 50.9 51.1 51.4 51.5 47.2 46.0 46.2 45.5 2470 161 3283 55.5 49.5 54.0

01/15 51.8 51.1 48.4 51.2 51.1 51.1 50.7 50.7 51.0 50.9 47.3 46.2 45.9 45.6 2929 77 3287 49.5 47.3 50.9

01/16 51.8 51.2 47.8 51.2 51.3 51.5 50.7 50.7 50.8 50.9 47.6 46.3 46.0 45.8 2456 296 3260 58.5 53.9 59.6

01/17 51.8 51.2 48.3 51.2 51.3 51.7 51.6 51.8 52.1 51.7 47.8 46.3 46.0 45.9 3012 153 3237 67.5 65.3 67.3

01/18 51.8 51.1 48.2 51.1 51.2 51.4 51.2 51.4 51.0 51.8 47.4 46.4 45.7 45.7 2960 235 3234 62.0 63.4 64.5

01/19 51.6 51.0 48.2 50.9 50.8 50.4 49.6 49.7 # - 50.2 46.7 46.2 43.5 43.6 2803 276 3236 57.0 53.5 55.6

01/20 51.5 50.8 48.3 50.7 50.7 50.6 49.6 49.3 # - 49.1 46.6 46.1 42.4 42.0 2929 190 3238 50.0 44.8 50.3

01/21 51.3 50.7 48.1 50.6 50.6 50.4 49.6 49.4 # - 49.0 46.8 46.2 43.2 41.8 2836 204 3236 45.5 43.8 46.4

01/22 51.2 50.7 48.3 50.6 50.6 50.4 49.9 49.8 # - 49.3 47.0 46.3 44.3 43.2 2927 123 3240 47.5 45.5 45.5

01/23 51.3 50.6 48.0 50.6 50.6 50.5 49.8 49.8 # - 49.7 46.5 46.0 44.4 43.6 2804 193 3259 47.0 45.4 48.6

01/24 51.4 50.5 47.9 50.4 50.2 49.7 48.7 48.5 # - 48.6 46.2 45.7 43.3 42.5 2768 257 3258 37.5 37.6 40.0

01/25 51.3 50.3 47.8 50.2 50.1 49.8 48.9 48.6 # - 48.0 46.2 45.4 42.2 41.5 2893 190 3262 41.5 41.3 43.8

01/26 51.1 49.9 47.1 ? 49.7 49.4 ? 48.6 47.3 46.9 # - 46.8 ? 45.0 ? 44.9 40.1 38.8 2092 555 3258 33.0 34.1 36.7

01/27 50.6 49.6 47.5 ? 48.8 48.5 ? 47.4 45.8 45.6 45.2 44.7 ? 43.8 ? 44.8 39.2 37.7 2980 77 3302 41.5 43.3 44.0

01/28 50.3 49.6 46.5 48.7 48.3 48.0 45.7 46.0 46.3 46.0 44.5 44.6 42.4 40.6 2502 614 3294 42.5 42.9 45.0

01/29 50.4 49.6 47.0 48.4 48.2 48.2 45.9 45.9 46.1 45.9 45.4 44.4 43.2 42.5 2744 160 3275 44.5 43.6 45.3

01/30 50.1 49.6 47.3 48.7 48.7 48.6 47.7 47.8 47.9 47.1 45.6 44.3 43.4 43.1 2733 77 3290 48.0 47.5 48.7

01/31 50.2 49.6 46.3 49.1 49.1 49.1 48.5 48.7 49.0 48.5 45.6 43.9 43.0 43.1 2934 350 3288 49.0 47.5 48.1

Jan 2775 223 3275 46.5 48.7

80475 6910 101513

Legend Notes 159619 13706 201347

? = 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

50.4

51.3

49.4

D

A

T

E

54.4 53.7

CCR2 TCD SAC 1 SHD SPP1 KWK BSF

51.6 50.9 48.0 50.6 50.5

50.9 53.1 52.8 52.6 50.8 50.8

Mean Daily 

Release (CFS)

NFH

42.5

Mean Daily Water Temperatures (°F)

44.8

Mean Daily Air 

Temperatures (°F)

RDD

47.8

Total CFS

49.3 43.4 47.9

IGO3

49.5

Total AF

50.4 48.6

RDB

49.2 46.6

LWS

45.4 43.9

DGC

43.4

JLF BND

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

01/01 34 58 46.0 38 55 46.5 38 53 45.5 40 55 47.5 43 55 49.0 38 54 46.0 36 52 44.0 35 55 45.0 35 56 45.5 39 57 48.0 37 56 46.5 37 55 46.0

01/02 38 53 45.5 46 51 48.5 41 53 47.0 42 54 48.0 33 54 43.5 34 51 42.5 35 58 46.5 35 58 46.5 39 62 50.5 38 58 48.0 37 55 46.0 39 58 48.5

01/03 46 51 48.5 48 53 50.5 41 54 47.5 32 54 43.0 34 52 43.0 34 58 46.0 35 56 45.5 35 56 45.5 44 57 50.5 39 60 49.5 39 59 49.0 38 61 49.5

01/04 46 50 48.0 47 55 51.0 30 56 43.0 35 49 42.0 34 57 45.5 33 53 43.0 31 55 43.0 33 56 44.5 40 57 48.5 43 58 50.5 43 62 52.5 42 64 53.0

01/05 37 58 47.5 35 58 46.5 33 49 41.0 33 56 44.5 39 54 46.5 34 56 45.0 35 56 45.5 38 54 46.0 40 57 48.5 39 61 50.0 41 65 53.0 42 65 53.5

01/06 33 59 46.0 37 48 42.5 33 55 44.0 38 55 46.5 31 58 44.5 32 60 46.0 36 61 48.5 38 63 50.5 46 67 56.5 44 66 55.0 44 67 55.5 46 63 54.5

01/07 36 47 41.5 34 56 45.0 37 55 46.0 33 59 46.0 33 60 46.5 34 62 48.0 37 63 50.0 40 68 54.0 45 69 57.0 42 66 54.0 41 66 53.5 43 63 53.0

01/08 32 56 44.0 44 54 49.0 33 59 46.0 35 59 47.0 35 61 48.0 35 60 47.5 40 67 53.5 40 70 55.0 44 69 56.5 37 64 50.5 38 63 50.5 39 63 51.0

01/09 39 56 47.5 34 60 47.0 33 58 45.5 33 61 47.0 37 58 47.5 40 66 53.0 41 70 55.5 40 68 54.0 42 68 55.0 45 65 55.0 43 65 54.0 40 62 51.0

01/10 33 62 47.5 36 56 46.0 33 60 46.5 38 54 46.0 41 63 52.0 40 69 54.5 39 68 53.5 39 67 53.0 45 68 56.5 37 67 52.0 39 64 51.5 38 61 49.5

01/11 36 54 45.0 34 59 46.5 42 52 47.0 45 58 51.5 45 68 56.5 40 65 52.5 39 68 53.5 39 67 53.0 42 69 55.5 42 67 54.5 44 66 55.0 41 60 50.5

01/12 33 57 45.0 45 52 48.5 46 59 52.5 41 68 54.5 41 66 53.5 42 67 54.5 41 67 54.0 41 68 54.5 44 68 56.0 40 64 52.0 38 61 49.5 39 56 47.5

01/13 45 50 47.5 49 60 54.5 42 69 55.5 41 67 54.0 42 69 55.5 42 71 56.5 43 67 55.0 39 65 52.0 37 65 51.0 35 60 47.5 34 57 45.5 34 58 46.0

01/14 46 60 53.0 39 70 54.5 40 67 53.5 41 70 55.5 42 71 56.5 42 65 53.5 38 64 51.0 35 65 50.0 38 63 50.5 37 62 49.5 36 58 47.0 37 59 48.0

01/15 38 73 55.5 41 66 53.5 42 70 56.0 43 73 58.0 42 66 54.0 39 63 51.0 36 64 50.0 34 60 47.0 33 52 42.5 34 52 43.0 34 52 43.0 36 52 44.0

01/16 39 60 49.5 51 72 61.5 49 73 61.0 43 66 54.5 40 63 51.5 37 65 51.0 35 61 48.0 33 55 44.0 36 59 47.5 35 59 47.0 36 55 45.5 39 59 49.0

01/17 42 75 58.5 61 75 68.0 46 67 56.5 39 62 50.5 35 64 49.5 34 58 46.0 34 54 44.0 31 56 43.5 40 53 46.5 37 54 45.5 37 53 45.0 39 58 48.5

01/18 58 77 67.5 58 69 63.5 43 63 53.0 36 65 50.5 35 61 48.0 36 54 45.0 32 55 43.5 28 53 40.5 33 53 43.0 34 52 43.0 37 54 45.5 38 58 48.0

01/19 54 70 62.0 50 65 57.5 38 65 51.5 36 60 48.0 39 54 46.5 37 57 47.0 30 50 40.0 30 49 39.5 40 48 44.0 42 51 46.5 39 56 47.5 38 56 47.0

01/20 49 65 57.0 33 66 49.5 35 60 47.5 36 55 45.5 35 59 47.0 33 48 40.5 32 48 40.0 31 47 39.0 39 52 45.5 38 56 47.0 38 58 48.0 39 56 47.5

01/21 32 68 50.0 37 60 48.5 36 52 44.0 32 59 45.5 31 46 38.5 34 50 42.0 29 47 38.0 36 46 41.0 42 53 47.5 39 55 47.0 39 57 48.0 38 59 48.5

01/22 34 57 45.5 42 52 47.0 32 60 46.0 31 46 38.5 28 50 39.0 28 49 38.5 35 45 40.0 38 51 44.5 40 55 47.5 40 52 46.0 37 55 46.0 39 56 47.5

01/23 41 54 47.5 34 60 47.0 30 47 38.5 28 51 39.5 25 46 35.5 34 46 40.0 39 49 44.0 37 52 44.5 39 50 44.5 38 51 44.5 39 54 46.5 41 60 50.5

01/24 33 61 47.0 30 46 38.0 28 51 39.5 24 45 34.5 34 46 40.0 38 48 43.0 38 50 44.0 37 51 44.0 41 50 45.5 40 53 46.5 37 54 45.5 40 64 52.0

01/25 29 46 37.5 38 52 45.0 24 44 34.0 34 47 40.5 39 49 44.0 35 51 43.0 40 51 45.5 42 54 48.0 45 53 49.0 38 54 46.0 36 60 48.0 40 61 50.5

01/26 30 53 41.5 25 41 33.0 32 40 36.0 38 49 43.5 35 50 42.5 37 51 44.0 41 53 47.0 42 53 47.5 43 55 49.0 37 58 47.5 39 61 50.0 41 63 52.0

01/27 24 42 33.0 33 44 38.5 38 48 43.0 35 51 43.0 39 50 44.5 41 52 46.5 42 52 47.0 36 52 44.0 37 53 45.0 41 59 50.0 41 64 52.5 40 68 54.0

01/28 33 50 41.5 40 48 44.0 38 52 45.0 37 50 43.5 39 50 44.5 41 51 46.0 36 51 43.5 29 53 41.0 38 57 47.5 41 61 51.0 41 66 53.5 44 65 54.5

01/29 40 45 42.5 40 51 45.5 38 50 44.0 41 50 45.5 41 51 46.0 38 52 45.0 33 54 43.5 36 58 47.0 37 58 47.5 41 62 51.5 40 60 50.0 41 64 52.5

01/30 40 49 44.5 44 50 47.0 40 50 45.0 41 52 46.5 41 54 47.5 33 56 44.5 37 60 48.5 36 59 47.5 39 59 49.0 43 61 52.0 42 65 53.5 43 64 53.5

01/31 44 52 48.0 45 50 47.5 38 54 46.0 42 54 48.0 32 56 44.0 36 61 48.5 37 62 49.5 37 63 50.0 39 62 50.5 42 64 53.0 43 65 54.0 42 60 51.0

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

30

35

40

45

50

55

60

65

70

45

46

47

48

49

50

51

52

53

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 1344

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

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
Jan-12

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

1998 -729 830 164 574 -36 201 180 139

1999 1337 908 818 1021 67 220 900 395

2000 740 378 178 432 37 92 196 108

2001 375 59 26 153 19 14 29 21

2002 324 1832 324 827 16 444 356 272

2003 1314 617 294 741 65 150 323 179

2004 1451 582 51 695 72 141 56 90

2005 -263 1038 231 511 -13 252 254 173

2006 1576 588 138 767 78 143 152 124

2007 1355 406 206 656 67 98 227 131

2008 -101 404 579 361 -5 98 637 247

2009 -720 876 86 561 -36 213 95 114

2010 -3 582 264 283 0 141 290 144

2011 1465 467 109 680 73 113 119 102

2012 1060 433 409 634 53 105 450 203

2013 1379 695 397 824 69 169 436 225

2014 -352 204 245 267 -18 49 270 112

2015 -86 33 0 40 -4 8 0 4

2016 -550 1037 329 638 -27 251 362 214

2017 1613 3193 493 1766 80 775 542 466

2018 -828 224 276 443 -41 54 304 133

2019 -875 485 45 469 -44 118 50 70

2020 -465 390 217 358 -23 95 239 119

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 01/19/2021 at 1520

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

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
Jan-19

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

2000 707 727 731 722 57 59 59 58

2001 446 466 147 353 36 38 12 28

2002 165 166 141 157 13 13 11 13

2003 428 447 415 430 34 36 34 35

2004 604 624 627 618 48 51 51 50

2005 296 -81 -177 185 24 -7 -14 15

2006 673 678 657 670 54 55 54 54

2007 545 565 382 497 44 46 31 40

2008 153 173 177 168 12 14 14 14

2009 -268 -248 -244 253 -21 -20 -20 20

2010 -255 -460 -495 403 -20 -37 -40 33

2011 505 525 528 519 40 43 43 42

2012 707 168 67 314 56 14 5 25

2013 657 677 680 672 53 55 55 54

2014 -77 -57 -57 63 -6 -5 -5 5

2015 -407 -388 -444 413 -33 -31 -36 33

2016 -650 -630 -772 684 -52 -51 -63 55

2017 235 -108 -162 169 19 -9 -13 14

2018 510 530 -129 390 41 43 -11 31

2019 299 211 191 234 24 17 16 19

2020 722 741 745 736 58 60 61 59

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 01/14/2021 at 1413

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

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