RST Sites Used in JPE

Overview

The spring run juvenile production estimate (SR JPE) contains a suite of submodels that rely on different datasets. This document is currently focused on Chinook monitoring data that will be used to fit the Stock Recruit model. The Within Season model is in development and is currently not considered here.

Stock Recruit Rotary Screw Trap Site Selection Overview

The Spring Run JPE model considers data from 7 tributaries and the mainstem Sacramento river, including:

  • Battle Creek
  • Butte Creek
  • Clear Creek
  • Deer Creek
  • Feather River
  • Mill Creek
  • Yuba River

Each of these tributaries has a unique monitoring setup and number of rotary screw traps (RSTs) that we can use in the SR JPE model. Data for the SR JPE is organized by stream, site, and subsite. stream represents the creek or river where the trapping sites are located. site represents a unique trapping location whereas subsite represents the RST positioning within the site. site group is used as a helper to group sites that may be more similar than others. For instance, on the Feather River there are multiple sites that have been used over time. It is assumed that sites within the Low Flow Channel are more similar to each other than the sites in the High Flow Channel and vice versa. Some streams only have one site and some sites only have one RST. The important difference is that catch from different subsites within the same site can be added together, whereas catch from different sites cannot be added together as this would be double counting.

This vignette describes the trapping sites that we use for each tributary.

Classifying RST site usage

Primary site selected for SR JPE Stock Recruit: When a stream has multiple tributaries, we selected one primary site to use for the SR JPE Stock Recruit model. Primary sites typically have the longest period of trapping and include the largest extent of spawners on a tributary.

Secondary site selected used for supplementary analysis and abundance estimate:

  • Any trap not selected for the SR JPE Stock Recruit model will still be used in juvenile abundance modeling. The BTSPAS-X juvenile abundance model is a hierarchical basin abundance model that can borrow information from one site when there is no information available at a different site.

  • Some sites not selected for the SR JPE Stock Recruit model may also be used for supplementary analysis. These analysis could include analyzing run proportions by looking at abundance numbers above and below a weir or looking at survival rates of juveniles between RST sites.

Map

The map below shows the location of existing RST sites.

Map of Rotary Screw Trap Monitoring Locations
Map of Rotary Screw Trap Monitoring Locations

Table of RST sites

The table below is a summary of site selection for the SR JPE Stock Recruit model. If a site has multiple subsites fishing on the same day these will be added together to get total catch or efficiency data for a day.

See sections below on each tributary to understand why sites were recommended as primary sites for Stock Recruit.

Stream Site Group Site Subsite Recommended Primary Site for Stock Recruit
battle creek battle creek ubc ubc ubc
butte creek butte creek

adams dam,

okie dam

 adams dam, okie dam 1, okie dam 2, okie dam fyke, okie dam rst okie dam
clear creek clear creek lcc, ucc lcc, ucc lcc
deer creek deer creek deer creek deer creek deer creek
feather river feather river lfc, feather river hfc eye riffle, gateway riffle, steep riffle, herringer riffle, live oak, shawns beach, sunset pumps, lower feather eye riffle_north, eye riffle_side channel, gateway main 400’ up river, gateway_main1, gateway_rootball, gateway_rootball_river_left, #steep riffle_rst, steep riffle_10’ ext, steep side channel, herringer_east, herringer_upper_west, herringer_west, live oak, shawns_east, shawns_west, sunset east bank, sunset west bank, rr, rl feather hfc - herringer riffle
mill creek mill creek mill creek mill creek mill creek
sacramento river knights landing, tisdale tisdale, knights landing, delta entry rr, rl, 8.3, 8.4 knights landing
yuba river yuba river hallwood, yuba river yub, hal, hal2, hal3 hallwood

Choosing Sites

Battle Creek

On Battle Creek there are 2 rotary screw trapping sites.

Primary site selected: Upper Battle Creek.

The SR JPE modeling team selected Upper Battle Creek as the primary site to use for the Stock Recruit because it has a longer period of record and is still an ongoing monitoring site.

Secondary site:

Lower Battle Creek efficiency or catch data may be used in fitting the juvenile abundance estimate model (BTSPAS-X) and for supplementary analysis. If the Battle Creek monitoring team adds LBC RST back into ongoing monitoring, this site may be used in combination with UBC for the Stock Recruit.

Table of Year, Stream, and Site for Stock Recruit

stream site run_year rst brood_year adult
battle creek ubc 1999 TRUE 1998 TRUE
battle creek ubc 2000 TRUE 1999 TRUE
battle creek ubc 2002 TRUE 2001 TRUE
battle creek ubc 2004 TRUE 2003 TRUE
battle creek ubc 2005 TRUE 2004 TRUE
battle creek ubc 2006 TRUE 2005 TRUE
battle creek ubc 2008 TRUE 2007 TRUE
battle creek ubc 2009 TRUE 2008 TRUE
battle creek ubc 2010 TRUE 2009 TRUE
battle creek ubc 2011 TRUE 2010 TRUE
battle creek ubc 2012 TRUE 2011 TRUE
battle creek ubc 2013 TRUE 2012 TRUE
battle creek ubc 2014 TRUE 2013 TRUE
battle creek ubc 2016 TRUE 2015 TRUE
battle creek ubc 2017 TRUE 2016 TRUE
battle creek ubc 2018 TRUE 2017 TRUE
battle creek ubc 2019 TRUE 2018 TRUE
battle creek ubc 2020 TRUE 2019 TRUE
battle creek ubc 2021 TRUE 2020 TRUE
battle creek ubc 2022 TRUE 2021 TRUE
battle creek ubc 2023 TRUE 2022 TRUE
battle creek ubc 2024 TRUE 2023 TRUE

Butte Creek

Historically, multiple rotary screw trapping sites have operated on Butte Creek. Currently, only 1 site is in operation, the Okie Dam site, also referred to as Parrott-Phalen Diversion Dam.

Primary site selected: Okie Dam

The SR JPE modeling team selected Okie Dam as the primary site to use for the Stock Recruit because it is the site with the most historical data and has ongoing monitoring. The Okie Dam site has a rotary screw trap and a fyke trap in operation during the monitoring season. Currently, data is considered complete only when the RST is operating. This means that the few records where only the fyke trap was operating are not currently used in juvenile abundance modelling. In the future, these data may be integrated, though this would require an approach to understand the portion of the river sampled by the fyke trap to better represent effort.

Secondary site:

Additional Adams Dam efficiency or catch data may be used in fitting the juvenile abundance estimate model (BTSPAS-X) and for supplementary analysis.

Table of Year, Stream, and Site for Stock Recruit

stream site run_year rst brood_year adult
butte creek okie dam 2002 TRUE 2001 TRUE
butte creek okie dam 2003 TRUE 2002 TRUE
butte creek okie dam 2004 TRUE 2003 TRUE
butte creek okie dam 2007 TRUE 2006 TRUE
butte creek okie dam 2008 TRUE 2007 TRUE
butte creek okie dam 2013 TRUE 2012 TRUE
butte creek okie dam 2014 TRUE 2013 TRUE
butte creek okie dam 2015 TRUE 2014 TRUE
butte creek okie dam 2016 TRUE 2015 TRUE
butte creek okie dam 2018 TRUE 2017 TRUE
butte creek okie dam 2020 TRUE 2019 TRUE
butte creek okie dam 2021 TRUE 2020 TRUE
butte creek okie dam 2022 TRUE 2021 TRUE
butte creek okie dam 2023 TRUE 2022 TRUE

Clear Creek

On Clear Creek there are 2 rotary screw trapping sites.

Primary site selected: Lower Clear Creek.

The SR JPE modeling team selected Lower Clear Creek (LCC) as the primary site to use for the Stock Recruit because it captures the full extent of spawning ground for spring run Chinook. Additionally, genetics samples for PLAD model development are being taken from the LCC site.

Secondary site:

Upper Clear Creek efficiency or catch data may be used in fitting the juvenile abundance estimate model (BTSPAS-X) and for supplementary analysis. There is a separation weir on Clear Creek that ensures that only spring run Chinook are caught in the UCC trap. This may prove helpful for potential supplementary analysis focused run identification including:

  • Use for understanding of run & potential survival between traps
  • Comparison UCC (all spring) to LCC PLAD results

If for some reason LCC (SR based on PLAD) and UCC counts do not align, we can reassess our decision to use LCC as our primary trap. In this case, we will have to do an spawning adult data analysis to come up with an adult scaling factor to ensure that we are scaling up our UCC estimates to account for downstream spawners that we are missing.

Table of Year, Stream, and Site for Stock Recruit

stream site run_year rst brood_year adult
clear creek lcc 1999 TRUE 1998 TRUE
clear creek lcc 2000 TRUE 1999 TRUE
clear creek lcc 2001 TRUE 2000 TRUE
clear creek lcc 2002 TRUE 2001 TRUE
clear creek lcc 2003 TRUE 2002 TRUE
clear creek lcc 2004 TRUE 2003 TRUE
clear creek lcc 2005 TRUE 2004 TRUE
clear creek lcc 2006 TRUE 2005 TRUE
clear creek lcc 2007 TRUE 2006 TRUE
clear creek lcc 2008 TRUE 2007 TRUE
clear creek lcc 2009 TRUE 2008 TRUE
clear creek lcc 2010 TRUE 2009 TRUE
clear creek lcc 2011 TRUE 2010 TRUE
clear creek lcc 2012 TRUE 2011 TRUE
clear creek lcc 2013 TRUE 2012 TRUE
clear creek lcc 2014 TRUE 2013 TRUE
clear creek lcc 2015 TRUE 2014 TRUE
clear creek lcc 2016 TRUE 2015 TRUE
clear creek lcc 2017 TRUE 2016 TRUE
clear creek lcc 2018 TRUE 2017 TRUE
clear creek lcc 2019 TRUE 2018 TRUE
clear creek lcc 2020 TRUE 2019 TRUE
clear creek lcc 2021 TRUE 2020 TRUE
clear creek lcc 2022 TRUE 2021 TRUE
clear creek lcc 2023 TRUE 2022 TRUE
clear creek lcc 2024 TRUE 2023 TRUE

Deer Creek

There is only one RST operated on Deer Creek. This trap will be used in the Stock Recruit.

Table of Year, Stream, and Site for Stock Recruit

stream site run_year rst brood_year adult
deer creek deer creek 1996 TRUE 1995 TRUE
deer creek deer creek 2000 TRUE 1999 TRUE
deer creek deer creek 2001 TRUE 2000 TRUE
deer creek deer creek 2005 TRUE 2004 TRUE
deer creek deer creek 2007 TRUE 2006 TRUE
deer creek deer creek 2009 TRUE 2008 TRUE
deer creek deer creek 2010 TRUE 2009 TRUE
deer creek deer creek 2002 TRUE 2001 TRUE
deer creek deer creek 2003 TRUE 2002 TRUE
deer creek deer creek 2023 TRUE 2022 TRUE
deer creek deer creek 2024 TRUE 2023 TRUE
deer creek deer creek 1995 TRUE 1994 TRUE

Feather River

On Feather River there are many rotary screw trapping sites. Consistently, a Low Flow Channel site (between Orville Dam and the Thermalito after bay) and a High Flow Channel site (after Thermalito after bay) are monitored each year. In 2022, a new RST program started on the Lower Feather River below the confluence with the Yuba River. This RST captures juveniles from both Yuba and Feather rivers.

Primary site selected: Herringer Riffle (High Flow Channel)

The SR JPE modeling team selected Herringer Riffle as the primary site to use for the Stock Recruit because it has the most consistent monitoring in the High Flow Channel, it is still an ongoing monitoring site, and it captures the full extent of spring run spawners. Additional sites will be used to fill data gaps on the HFC if Herringer is not fishing in a given year.

Secondary site:

Eye Riffle efficiency or catch data may be used in fitting the juvenile abundance estimate model (BTSPAS-X) and for supplementary analysis. After initial analysis, we will reassess site decision to see how to best incorporate Eye Riffle data in modeling.

Additional considerations for Feather River

The Lower Feather River site will be used in the SR JPE modeling but will not be used directly to fit a Stock Recruit in a tributary specific model. This could be used in as part of a mainstem model or to do a joint Feather and Yuba river model.

Table of Year, Stream, and Site for Stock Recruit

stream site run_year rst brood_year adult
feather river herringer riffle 2012 TRUE 2011 TRUE
feather river herringer riffle 2013 TRUE 2012 TRUE
feather river herringer riffle 2014 TRUE 2013 TRUE
feather river herringer riffle 2015 TRUE 2014 TRUE
feather river herringer riffle 2018 TRUE 2017 TRUE
feather river herringer riffle 2019 TRUE 2018 TRUE
feather river herringer riffle 2020 TRUE 2019 TRUE
feather river herringer riffle 2022 TRUE 2021 TRUE
feather river herringer riffle 2023 TRUE 2022 TRUE
feather river sunset pumps 2011 TRUE 2010 TRUE

Mill Creek

There is only one RST operated on Mill Creek. This trap will be used in the Stock Recruit.

Table of Year, Stream, and Site for Stock Recruit

stream site run_year rst brood_year adult
mill creek mill creek 2000 TRUE 1999 TRUE
mill creek mill creek 2001 TRUE 2000 TRUE
mill creek mill creek 2005 TRUE 2004 TRUE
mill creek mill creek 2006 TRUE 2005 TRUE
mill creek mill creek 2007 TRUE 2006 TRUE
mill creek mill creek 2008 TRUE 2007 TRUE
mill creek mill creek 2010 TRUE 2009 TRUE
mill creek mill creek 2024 TRUE 2023 TRUE
mill creek mill creek 2002 TRUE 2001 TRUE
mill creek mill creek 2022 TRUE 2021 TRUE
mill creek mill creek 2023 TRUE 2022 TRUE
mill creek mill creek 2003 TRUE 2002 TRUE

Yuba River

Historically, multiple rotary screw trapping sites have operated on the Yuba River. Currently, only 1 site is in operation, the Hallwood site.

Primary site selected: Hallwood

The SR JPE modeling team selected Hallwood as the primary site to use for the Stock Recruit because it is the site with the most historical data, it is the lowest in the system, and ongoing monitoring at this site restarted in 2022.

Secondary site:

Additional Yuba River efficiency or catch data may be used in fitting the juvenile abundance estimate model (BTSPAS-X) and for supplementary analysis.

Table of Year, Stream, and Site for Stock Recruit

stream site run_year rst brood_year adult
yuba river hallwood 2005 TRUE 2004 TRUE
yuba river hallwood 2007 TRUE 2006 TRUE
yuba river hallwood 2008 TRUE 2007 TRUE
yuba river hallwood 2009 TRUE 2008 TRUE
yuba river hallwood 2006 TRUE 2005 TRUE