SacPAS: Central Valley Prediction & Assessment of Salmon

UW Columbia Basin Research
Home Data Queries & Alerts Fish Model Contact
Alert: Weir Overtopping RPAs: Temperature Targets Juvenile Monitoring & Sampling Juvenile Loss & Salvage Adult Escapement River Conditions Exposure Index Data Sites & Inventory

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 2019 Clear Creek nr Igo (IGO) Water Temp (F)

2019 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 0 0              
Spring-Run Eggs/Pre-emergent Fry 9/15-10/31 Below/Equal 56F 0 0              

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

2019 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
2019 03 20 48.96    
2019 03 19 49.01    
2019 03 18 48.98    
2019 03 17 48.75    
2019 03 16 48.18    
2019 03 15 47.90    
2019 03 14 47.30    
2019 03 13 47.04    
2019 03 12 48.01    
2019 03 11 47.75    
2019 03 10 47.33    
2019 03 09 46.28    
2019 03 08 48.49    
2019 03 07 49.14    
2019 03 06 49.50    
2019 03 05 47.43    
2019 03 04 48.21    
2019 03 03 48.39    
2019 03 02 47.57    
2019 03 01 46.65    
2019 02 28 46.55    
2019 02 27 47.69    
2019 02 26 47.30    
2019 02 25 45.33    
2019 02 24 45.22    
2019 02 23 44.63    
2019 02 22 44.21    
2019 02 21 44.45    
2019 02 20 44.98    
2019 02 19 44.50    
2019 02 18 44.51    
2019 02 17 45.08    
2019 02 16 45.97    
2019 02 15 45.85    
2019 02 14 44.43    
2019 02 13 42.27    
2019 02 12 45.83    
2019 02 11 45.55    
2019 02 10 45.19    
2019 02 09 46.05    
2019 02 08 46.78    
2019 02 07 46.48    
2019 02 06 46.15    
2019 02 05 46.03    
2019 02 04 47.79    
2019 02 03 48.99    
2019 02 02 49.15    
2019 02 01 48.43    
2019 01 31 48.18    
2019 01 30 48.31    
2019 01 29 48.68    
2019 01 28 48.47    
2019 01 27 48.23    
2019 01 26 48.09    
2019 01 25 47.46    
2019 01 24 47.63    
2019 01 23 47.05    
2019 01 22 46.95    
2019 01 21 47.83    
2019 01 20 49.72    
2019 01 19 48.78    
2019 01 18 47.93    
2019 01 17 48.91    
2019 01 16 48.05    
2019 01 15 47.69    
2019 01 14 47.09    
2019 01 13 47.76    
2019 01 12 47.99    
2019 01 11 47.92    
2019 01 10 48.75    
2019 01 09 48.74    
2019 01 08 47.75    
2019 01 07 46.83    
2019 01 06 46.23    
2019 01 05 46.62    
2019 01 04 47.58    
2019 01 03 47.53    
2019 01 02 47.39    
2019 01 01 47.21    

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: 21 Mar 2019 06:45:13 PDT. www.cbr.washington.edu/sacramento/data/.

Home | Data Queries & Alerts | Fish Model | Contact


POC: web@cbr.washington.edu

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