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Clear Creek Temperature Target Analysis based on RPA I.1.5


This page provides analysis, based on NMFS 2009 RPA I.1.5, of current and historical temperature conditions for fish using only observed data. Actual pre-season and in-season management decision processes are complex employing multiple sources of observed data, models, and forecasts. For further information, see the Target Analysis Criteria section.

View Analysis for: Note: Years prior to 2009 pre-date the RPAs and are provided for historical perspective on conditions.
graph 2018 Clear Creek nr Igo (IGO) Water Temp (F)

2018 Temperature Target Analysis and Exceedance

Steelhead
Life Stage
Life Stage
Dates
RPA
Criterion
Possible
Days
Data
Days
Total Period Analyzed Criteria Exceedance
Average
Temperature
Days in
Target
Pct Days
Target
Days Pct of
Total Days
First Day Last Day
Juv Steelhead/Spring-Run Adults 6/1-9/14 Below/Equal 60F 106 106 57.1F 105 99.1% 1 0.9% 07/15 07/15
Spring-Run Eggs/Pre-emergent Fry 9/15-10/31 Below/Equal 56F 47 47 55.2F 43 91.5% 4 8.5% 10/04 10/28

Jump to Detail Data

View Analysis for Another Year

Color Vision Deficiency (CVD) colors
Note: Years prior to 2009 pre-date the RPAs and are provided for historical perspective on conditions.

Clear Creek Temperature Target Analysis History based on RPA I.1.5

graph Clear Creek Temperature Target Analysis History

2018 Clear Creek Temperature Target Analysis Data Table for Clear Creek nr Igo (IGO)

Year Month Day Value Juvenile/Adult 60F Egg/Fry 56F
Year Month Day Value Juvenile/Adult 60F Egg/Fry 56F
2018 12 31 47.59    
2018 12 30 48.21    
2018 12 29 48.33    
2018 12 28 47.83    
2018 12 27 48.33    
2018 12 26 48.70    
2018 12 25 48.90    
2018 12 24 49.30    
2018 12 23 49.80    
2018 12 22 49.25    
2018 12 21 50.07    
2018 12 20 50.19    
2018 12 19 50.61    
2018 12 18 50.49    
2018 12 17 50.07    
2018 12 16 50.10    
2018 12 15 50.20    
2018 12 14 50.11    
2018 12 13 50.37    
2018 12 12 51.02    
2018 12 11 51.00    
2018 12 10 51.50    
2018 12 09 51.38    
2018 12 08 51.52    
2018 12 07 50.90    
2018 12 06 51.55    
2018 12 05 52.30    
2018 12 04 51.98    
2018 12 03 51.23    
2018 12 02 51.55    
2018 12 01 52.41    
2018 11 30 52.25    
2018 11 29 51.90    
2018 11 28 52.87    
2018 11 27 52.41    
2018 11 26 53.24    
2018 11 25 53.74    
2018 11 24 53.88    
2018 11 23 53.20    
2018 11 22 53.18    
2018 11 21 53.18    
2018 11 20 52.87    
2018 11 19 53.32    
2018 11 18 53.57    
2018 11 17 53.81    
2018 11 16 53.81    
2018 11 15 53.71    
2018 11 14 53.51    
2018 11 13 53.45    
2018 11 12 53.47    
2018 11 11 53.65    
2018 11 10 53.78    
2018 11 09 54.25    
2018 11 08 54.39    
2018 11 07 54.48    
2018 11 06 54.75    
2018 11 05 55.64    
2018 11 04 56.02    
2018 11 03 56.36    
2018 11 02 56.50    
2018 11 01 56.73    
2018 10 31 55.84   Target
2018 10 30 55.71   Target
2018 10 29 55.77   Target
2018 10 28 56.31   Exceed
2018 10 27 56.21   Exceed
2018 10 26 56.18   Exceed
2018 10 25 55.98   Target
2018 10 24 55.83   Target
2018 10 23 55.53   Target
2018 10 22 55.63   Target
2018 10 21 55.61   Target
2018 10 20 55.75   Target
2018 10 19 55.72   Target
2018 10 18 55.42   Target
2018 10 17 55.60   Target
2018 10 16 55.38   Target
2018 10 15 55.11   Target
2018 10 14 55.07   Target
2018 10 13 55.41   Target
2018 10 12 55.30   Target
2018 10 11 55.17   Target
2018 10 10 55.25   Target
2018 10 09 55.76   Target
2018 10 08 55.43   Target
2018 10 07 54.96   Target
2018 10 06 55.20   Target
2018 10 05 55.01   Target
2018 10 04 56.06   Exceed
2018 10 03 55.29   Target
2018 10 02 54.94   Target
2018 10 01 53.98   Target
2018 09 30 54.23   Target
2018 09 29 53.90   Target
2018 09 28 54.04   Target
2018 09 27 53.75   Target
2018 09 26 53.55   Target
2018 09 25 53.79   Target
2018 09 24 53.65   Target
2018 09 23 54.07   Target
2018 09 22 53.73   Target
2018 09 21 55.20   Target
2018 09 20 55.88   Target
2018 09 19 55.71   Target
2018 09 18 55.37   Target
2018 09 17 55.16   Target
2018 09 16 55.62   Target
2018 09 15 55.63   Target
2018 09 14 55.81 Target  
2018 09 13 57.98 Target  
2018 09 12 58.15 Target  
2018 09 11 58.40 Target  
2018 09 10 58.74 Target  
2018 09 09 58.67 Target  
2018 09 08 58.95 Target  
2018 09 07 58.69 Target  
2018 09 06 59.20 Target  
2018 09 05 59.45 Target  
2018 09 04 59.30 Target  
2018 09 03 59.09 Target  
2018 09 02 59.12 Target  
2018 09 01 59.06 Target  
2018 08 31 59.28 Target  
2018 08 30 59.43 Target  
2018 08 29 59.81 Target  
2018 08 28 59.18 Target  
2018 08 27 59.13 Target  
2018 08 26 59.01 Target  
2018 08 25 58.33 Target  
2018 08 24 56.75 Target  
2018 08 23 56.72 Target  
2018 08 22 55.22 Target  
2018 08 21 56.54 Target  
2018 08 20 56.78 Target  
2018 08 19 56.79 Target  
2018 08 18 56.81 Target  
2018 08 17 57.13 Target  
2018 08 16 57.27 Target  
2018 08 15 57.18 Target  
2018 08 14 56.74 Target  
2018 08 13 56.76 Target  
2018 08 12 57.06 Target  
2018 08 11 57.27 Target  
2018 08 10 57.00 Target  
2018 08 09 56.78 Target  
2018 08 08 57.38 Target  
2018 08 07 57.10 Target  
2018 08 06 57.21 Target  
2018 08 05 57.00 Target  
2018 08 04 56.99 Target  
2018 08 03 57.07 Target  
2018 08 02 57.09 Target  
2018 08 01 57.10 Target  
2018 07 31 57.12 Target  
2018 07 30 57.25 Target  
2018 07 29 56.90 Target  
2018 07 28 57.48 Target  
2018 07 27 57.52 Target  
2018 07 26 57.56 Target  
2018 07 25 57.51 Target  
2018 07 24 58.19 Target  
2018 07 23 58.14 Target  
2018 07 22 57.82 Target  
2018 07 21 57.38 Target  
2018 07 20 57.67 Target  
2018 07 19 57.81 Target  
2018 07 18 57.77 Target  
2018 07 17 57.78 Target  
2018 07 16 58.44 Target  
2018 07 15 60.41 Exceed  
2018 07 14 59.92 Target  
2018 07 13 59.03 Target  
2018 07 12 59.62 Target  
2018 07 11 59.60 Target  
2018 07 10 59.50 Target  
2018 07 09 59.10 Target  
2018 07 08 59.13 Target  
2018 07 07 58.92 Target  
2018 07 06 57.73 Target  
2018 07 05 58.29 Target  
2018 07 04 58.51 Target  
2018 07 03 58.58 Target  
2018 07 02 59.18 Target  
2018 07 01 58.91 Target  
2018 06 30 58.54 Target  
2018 06 29 58.48 Target  
2018 06 28 58.01 Target  
2018 06 27 58.04 Target  
2018 06 26 57.86 Target  
2018 06 25 56.29 Target  
2018 06 24 55.94 Target  
2018 06 23 55.45 Target  
2018 06 22 55.62 Target  
2018 06 21 54.58 Target  
2018 06 20 53.29 Target  
2018 06 19 52.17 Target  
2018 06 18 52.06 Target  
2018 06 17 53.27 Target  
2018 06 16 55.66 Target  
2018 06 15 55.90 Target  
2018 06 14 56.30 Target  
2018 06 13 56.14 Target  
2018 06 12 55.88 Target  
2018 06 11 54.63 Target  
2018 06 10 53.66 Target  
2018 06 09 53.52 Target  
2018 06 08 53.25 Target  
2018 06 07 53.68 Target  
2018 06 06 52.95 Target  
2018 06 05 51.84 Target  
2018 06 04 51.81 Target  
2018 06 03 53.11 Target  
2018 06 02 54.91 Target  
2018 06 01 54.12 Target  
2018 05 31 53.44    
2018 05 30 55.19    
2018 05 29 55.25    
2018 05 28 55.13    
2018 05 27 54.63    
2018 05 26 54.03    
2018 05 25 52.10    
2018 05 24 54.09    
2018 05 23 54.19    
2018 05 22 54.48    
2018 05 21 54.13    
2018 05 20 54.11    
2018 05 19 53.85    
2018 05 18 53.89    
2018 05 17 53.81    
2018 05 16 53.07    
2018 05 15 53.86    
2018 05 14 53.57    
2018 05 13 53.28    
2018 05 12 52.94    
2018 05 11 52.78    
2018 05 10 52.73    
2018 05 09 53.25    
2018 05 08 53.21    
2018 05 07 52.93    
2018 05 06 52.99    
2018 05 05 52.50    
2018 05 04 52.80    
2018 05 03 52.48    
2018 05 02 52.20    
2018 05 01 51.90    
2018 04 30 51.68    
2018 04 29 51.31    
2018 04 28 50.93    
2018 04 27 51.20    
2018 04 26 52.61    
2018 04 25 52.47    
2018 04 24 51.82    
2018 04 23 51.94    
2018 04 22 51.92    
2018 04 21 51.95    
2018 04 20 51.19    
2018 04 19 50.51    
2018 04 18 49.44    
2018 04 17 49.47    
2018 04 16 48.83    
2018 04 15 49.61    
2018 04 14 50.88    
2018 04 13 49.57    
2018 04 12 48.74    
2018 04 11 49.73    
2018 04 10 51.20    
2018 04 09 51.00    
2018 04 08 50.55    
2018 04 07 52.84    
2018 04 06 50.07    
2018 04 05 49.47    
2018 04 04 50.00    
2018 04 03 49.38    
2018 04 02 50.42    
2018 04 01 50.07    
2018 03 31 50.01    
2018 03 30 49.61    
2018 03 29 49.67    
2018 03 28 49.78    
2018 03 27 48.98    
2018 03 26 47.97    
2018 03 25 47.53    
2018 03 24 47.06    
2018 03 23 46.88    
2018 03 22 49.29    
2018 03 21 47.94    
2018 03 20 47.28    
2018 03 19 47.75    
2018 03 18 47.13    
2018 03 17 46.87    
2018 03 16 46.76    
2018 03 15 46.44    
2018 03 14 47.42    
2018 03 13 48.35    
2018 03 12 47.36    
2018 03 11 47.83    
2018 03 10 47.91    
2018 03 09 47.68    
2018 03 08 48.06    
2018 03 07 47.14    
2018 03 06 46.88    
2018 03 05 46.34    
2018 03 04 46.39    
2018 03 03 46.04    
2018 03 02 45.41    
2018 03 01 45.74    
2018 02 28 46.41    
2018 02 27 46.50    
2018 02 26 46.85    
2018 02 25 46.95    
2018 02 24 46.40    
2018 02 23 46.54    
2018 02 22 46.58    
2018 02 21 46.80    
2018 02 20 46.38    
2018 02 19 46.61    
2018 02 18 47.57    
2018 02 17 48.20    
2018 02 16 47.65    
2018 02 15 47.25    
2018 02 14 47.13    
2018 02 13 47.19    
2018 02 12 47.28    
2018 02 11 47.20    
2018 02 10 47.79    
2018 02 09 48.18    
2018 02 08 48.36    
2018 02 07 48.13    
2018 02 06 47.55    
2018 02 05 48.17    
2018 02 04 48.28    
2018 02 03 48.02    
2018 02 02 48.03    
2018 02 01 48.00    
2018 01 31 47.22    
2018 01 30 47.48    
2018 01 29 47.93    
2018 01 28 47.70    
2018 01 27 47.63    
2018 01 26 47.40    
2018 01 25 46.98    
2018 01 24 47.73    
2018 01 23 47.45    
2018 01 22 47.45    
2018 01 21 47.00    
2018 01 20 46.93    
2018 01 19 47.19    
2018 01 18 48.44    
2018 01 17 48.73    
2018 01 16 48.47    
2018 01 15 47.75    
2018 01 14 47.85    
2018 01 13 47.75    
2018 01 12 47.97    
2018 01 11 48.29    
2018 01 10 47.97    
2018 01 09 48.31    
2018 01 08 47.80    
2018 01 07 47.16    
2018 01 06 47.82    
2018 01 05 48.28    
2018 01 04 48.06    
2018 01 03 47.90    
2018 01 02 47.59    
2018 01 01 47.54    

Data Methods, Notes, Citations

Data Methods

  1. Data Courtesy of CDEC and US Geological Survey
  2. Hourly data for Clear Creek nr Igo (IGO) is retrieved from CDEC on a daily basis.
  3. Columbia Basin Research (CBR) QA/QC process on IGO hourly data for outliers, false data (e.g., 32F measured by satellite), and data outside expected range of observation (e.g., 90F). Data loaded into CBR database.
  4. CBR calculates Daily Average values based on CBR cleaned hourly values.
  5. Query for daily average water temperature for selected year.
  6. Examine daily average data for 60F and 56F exceedance during date periods as outlined in RPA I.1.5.

Target Analysis Criteria

Please refer to the Clear Creek Technical Team (CCTT) annual reports for details on within water year activities.

Target analysis and exceedance found on this page is based on criteria as described in NMFS 2009, p589.

NMFS 2009. Biological and conference opinion on the long-term operations of the Central Valley Project and State Water Project. Long Beach, California. June 4. 844 pg. Plus appendices. Available online: www.westcoast.fisheries.noaa.gov/publications/Central_Valley/Water%20Operations/Operations,%20Criteria%20and%20Plan/nmfs_biological_and_conference_opinion_on_the_long-term_operations_of_the_cvp_and_swp.pdf

Direct quote from NMFS 2009, p589.

Action I.1.5. Thermal Stress Reduction

Objective: To reduce thermal stress to over-summering steelhead and spring-run during holding, spawning, and embryo incubation.

Action: Reclamation shall manage Whiskeytown releases to meet a daily water temperature of:
1)60°F at the Igo gage from June 1 through September 15; and
2)56°F at the Igo gage from September 15 to October 31.

Reclamation, in coordination with NMFS, will assess improvements to modeling water temperatures in Clear Creek and identify a schedule for making improvements.

Rationale: The water temperature criteria address the critical need for colder water that historically was available to salmonids above Whiskeytown Dam. If the criteria are not met, juvenile steelhead rearing habitat is limited, predation is higher, and disease is more prevalent. Spring-run adults need colder water to hold over during the summer until September. If water temperature is too warm, spring-run experience pre-spawn mortality and reduced production. The lower water temperature in September is necessary to reduce mortality of spring-run eggs and pre-emergent fry.


Citation
Columbia Basin Research, University of Washington. (2019). SacPAS Clear Creek Temperature Target Analysis (RPA I.1.5). Available from http://www.cbr.washington.edu/sacramento/data/tc_clear_RPAI.1.5.html
Generated: 19 Jan 2019 06:45:03 PST. www.cbr.washington.edu/sacramento/data/.

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SacPAS: Central Valley Prediction & Assessment of Salmon, University of Washington, Columbia Basin Research, www.cbr.washington.edu/sacramento/