Workgroups & Teams

WY2025 Current Conditions for the Salmon Monitoring Team

DCC Operations

graphic Catch Index Knights Landing, Sacramento Trawls, Sacramento Beach Seines (10/1/2024 - 12/31/2024)
Catch Index Knights Landing, Sacramento Trawls, Sacramento Beach Seines (10/1/2024 - 12/31/2024)
Alerts for Environmental Surrogates (Flow and Temperature)
Date Knights Landing RST: Winter Chinook: Catch Index Knights Landing RST: Older Chinook: Catch Index Sacramento Trawls: Older Chinook: Catch Index Sacramento Beach Seines: Older Chinook: Catch Index Alert: Catch Index > 5 Alert: Catch Index 3 < X ≤ 5
2024-11-19 0 0        
2024-11-18 0 0 0 0    
2024-11-17 0 0        
2024-11-16 0 0        
2024-11-15 0 0 0 0    
2024-11-14 0 0 0      
2024-11-13 0 0   0    
2024-11-12 0 0 0 0    
2024-11-11 0 0        
2024-11-10 0 0        
2024-11-09 0 0        
2024-11-08 0 0 0 0    
2024-11-07 0 0        
2024-11-06 0 0 0 0    
2024-11-05 0 0        
2024-11-04 0 0 0 0    
2024-11-03 0 0        
2024-11-02 0 0        
2024-11-01 0 0   0    
2024-10-31 0 0 0      
2024-10-30 0 0 0 0    
2024-10-29 0 0        
2024-10-28 0 0 0 0    
2024-10-27 0 0        
2024-10-26 0 0        
2024-10-25 0 0 0 0    
2024-10-24 0 0        
2024-10-23 0 0 0 0    
2024-10-22 0 0        
2024-10-21 0 0 0 0    
2024-10-20 0 0        
2024-10-19 0.5 0.5        
2024-10-18 0 0 0 0    
2024-10-17 0 0 0 0    
2024-10-16 0 0 0      
2024-10-15 0 0   0    
2024-10-14 0 0        
2024-10-13 0 0        
2024-10-12 0 0        
2024-10-11 0 0 0 0    
2024-10-10 0 0        
2024-10-09 0 0 0 0    
2024-10-08 0 0        
2024-10-07     0 0    
2024-10-06            
2024-10-05            
2024-10-04 0 0 0 0    
2024-10-03 0 0        
2024-10-02 0 0 0 0    
2024-10-01 0 0        
0 value indicates sampling occurred. Calculations generated by SacPAS. Data Courtesy of USFWS Lodi and CDFW via StreamNet.

Part 1: DCC operations by Knights Landing or Sacramento Catch Indices (PA 4-56)
Monitoring period: 1 October-30 November
Water quality criteria per D-1641 are met and either the Knights Landing Catch Index or Sacramento Catch Index is greater than 5.0 fish per day (close until both < 3/day)
Water quality criteria per D-1641 are met, either Knights Landing Catch Index or the Sacramento Catch Index are greater than 3.0 fish per day but less than or equal to five fish per day. (closed for 3 days)

Alerts: Deer Creek, Mill Creek, Wilkins Slough, Knights Landing

Daily Average Flow and Temperature Last 7 Days
Date Mill Creek (MLM): mean daily flow (cfs) Mill Creek (MLM): flow percent change Mill Creek (MLM): Alert Deer Creek (DCV): mean daily flow (cfs) Deer Creek (DCV): flow percent change Deer Creek (DCV): Alert Wilkins Slough (WLK): mean daily flow (cfs) Knights Landing RST: water temperature (f) WLK-KNL: Alert
11/19/2024 125.4 -6.0% Flow>95cfs 112.2 -0.7% Flow>95cfs 3932.9 42.4  
11/18/2024 133.3 7.9% Flow>95cfs 113.1 2.0% Flow>95cfs 4074.6 42.7  
11/17/2024 123.5 -4.5% Flow>95cfs 110.8 -6.5% Flow>95cfs 4205.5 42.8  
11/16/2024 129.3 -14.7% Flow>95cfs 118.6 -17.0% Flow>95cfs 4289.8 43.8  
11/15/2024 151.7 3.8% Flow>95cfs 142.9 12.8% Flow>95cfs 4345.4 43.6  
11/14/2024 146.2 13.4% Flow>95cfs 126.7 1.9% Flow>95cfs 4271.2 43.7  
11/13/2024 128.9 -15.8% Flow>95cfs 124.2 -13.0% Flow>95cfs 4254.7 43.8  
Calculations generated by SacPAS. Data Courtesy of CDEC and CDFW via StreamNet.

Monitor Deer Creek and Mill Creek for average daily flow >95 cfs or >50% change from prior day

Monitor for both conditions: Wilkins Slough average daily flow >7500 cfs and Knights Landing temperature <56.3F

Juvenile Sampling

Juvenile Sampling Summary for 11/13/2024-11/19/2024 (last 7 days) and 11/06/2024-11/12/2024 (previous 7 days)

Juvenile Sampling Summary for 11/13/2024-11/19/2024 (last 7 days) and 11/06/2024-11/12/2024 (previous 7 days)
Date RangeData ItemButte Creek Diversion and RSTTisdale Weir RSTKnights Landing RSTLower Feather River RSTLower Sacramento River RSTSacramento Trawls (@ Sherwood Harbor)Sacramento Beach SeinesChipps Island TrawlsMossdale Trawls
Date RangeData ItemButte Creek Diversion and RSTTisdale Weir RSTKnights Landing RSTLower Feather River RSTLower Sacramento River RSTSacramento Trawls (@ Sherwood Harbor)Sacramento Beach SeinesChipps Island TrawlsMossdale Trawls
11/13/2024-11/19/2024Min Sample Date2024-11-132024-11-132024-11-132024-11-142024-11-132024-11-132024-11-14
11/13/2024-11/19/2024Max Sample Date2024-11-182024-11-192024-11-192024-11-182024-11-182024-11-192024-11-18
11/13/2024-11/19/2024Days with Sampling6770300
11/13/2024-11/19/2024Fall Chinook0000000
11/13/2024-11/19/2024Spring Chinook0000000
11/13/2024-11/19/2024Winter Chinook0000000
11/13/2024-11/19/2024LateFall Chinook0000000
11/13/2024-11/19/2024Chinook (ad-clip)0000000
11/13/2024-11/19/2024Steelhead (natural)0000000
11/13/2024-11/19/2024Steelhead (ad-clip)0000000
11/13/2024-11/19/2024Avg Flow (cfs)128.84117.14196.32144.08772.98772.95062.61330.0
11/13/2024-11/19/2024Avg Water Temp (F)11.243.343.154.554.556.953.3
11/13/2024-11/19/2024Avg Turbidity (NTU)5.15.64.2
11/06/2024-11/12/2024Min Sample Date2024-11-062024-11-062024-11-062024-11-062024-11-062024-11-062024-11-06
11/06/2024-11/12/2024Max Sample Date2024-11-122024-11-122024-11-122024-11-122024-11-122024-11-122024-11-12
11/06/2024-11/12/2024Days with Sampling7770300
11/06/2024-11/12/2024Fall Chinook0000000
11/06/2024-11/12/2024Spring Chinook2100000
11/06/2024-11/12/2024Winter Chinook0010000
11/06/2024-11/12/2024LateFall Chinook0000000
11/06/2024-11/12/2024Chinook (ad-clip)0000000
11/06/2024-11/12/2024Steelhead (natural)0000000
11/06/2024-11/12/2024Steelhead (ad-clip)0000000
11/06/2024-11/12/2024Avg Flow (cfs)116.84849.04360.62197.48998.48998.44425.91560.6
11/06/2024-11/12/2024Avg Water Temp (F)11.743.843.956.056.058.555.0
11/06/2024-11/12/2024Avg Turbidity (NTU)5.35.33.5
source of Avg Flow (cfs)Butte Creek nr Chico (BCK)Colousa (COL)Wilkins Slough (WLK)Boyd's Landing (FSB)Verona (VON)Freeport (FPT)Freeport (FPT)Delta OutFlow (DTO)Vernalis (VNS)
source of Avg Water Temp (F)Butte CreekTisdale WeirKnights LandingLower Feather RiverLower Sacramento RiverHood (SRH)Hood (SRH)Chipps Island TrawlsVernalis (VNS)
source of Avg Turbidity (NTU)Butte CreekTisdale WeirKnights LandingLower Feather RiverLower Sacramento RiverSacramento TrawlsSacramento TrawlsChipps Island TrawlsMossdale Trawls
  • Butte Creek Diversion and RST: Preliminary data from CDFW via CalFish; subject to revision.
  • Tisdale Weir RST: Preliminary data from CDFW via CalFish and CDEC; subject to revision.
  • Knights Landing RST: Preliminary data from CDFW via CalFish and CDEC; subject to revision. Turbidity is a discrete measure. KNL measured in FTU which should be roughly equivalent to NTU.
  • Lower Feather River RST: Preliminary data from CDFW via CalFish; subject to revision.
  • Lower Sacramento River RST: Preliminary data from CDFW via CalFish; subject to revision.
  • Sacramento Trawls (@ Sherwood Harbor): Preliminary data from USFWS Lodi and CDEC; subject to revision.
  • Sacramento Beach Seines: Preliminary data from USFWS Lodi and CDEC; subject to revision.
  • Chipps Island Trawls: Preliminary data from USFWS Lodi and CDEC; subject to revision.
  • Mossdale Trawls: Preliminary data from USFWS Lodi and CDEC; subject to revision.
  • Averages: calculated for all non-null data points within the 7 day reporting period.

Historical Migration Pattern for "Today"

Average Percent by 11/19, with 95%CI, of annual emigrating population for juveniles of each species of interest (based on LAD) captured at the following locations and salvaged at SWP and CVP Delta facilities
Species Red Bluff Diversion Dam Tisdale RST Knights Landing RST Sac Trawl (Sherwood) Catch Index Chipps Island Trawl Catch Index Salvage
Chinook, Winter-run, Unclipped 87.1%
(81.9%,92.3%)
BY: 2014 - 2023
24.0%
(5.3%,42.7%)
BY: 2014 - 2023
25.1%
(3.4%,46.7%)
BY: 2014 - 2023
9.8%
(-9.3%,29.0%)
BY: 2014 - 2023
1.0%
(-1.3%,3.3%)
BY: 2014 - 2023
0.0%
(0.0%,0.0%)
WY: 2015 - 2024
Chinook, Spring-run, Unclipped 1.7%
(-0.0%,3.5%)
BY: 2014 - 2023
0.4%
(0.0%,0.8%)
BY: 2014 - 2023
2.0%
(-1.7%,5.7%)
BY: 2014 - 2023
0.0%
(0.0%,0.0%)
BY: 2014 - 2023
0.0%
(0.0%,0.0%)
BY: 2014 - 2023
0.0%
(0.0%,0.0%)
WY: 2015 - 2024
Steelhead, Unclipped (January-December)            
Steelhead, Unclipped (December-March)            
Steelhead, Unclipped (April-June)            
Calculations generated by SacPAS Migration Timing and Conditions by Cohort and Salvage Timing. Data Courtesy of USFWS, Red Bluff; CDFW via StreamNet and CDEC; USFWS, Lodi.

Species Distribution Estimates

Estimates presented during weekly meetings. Submitted by BOR to SacPAS after weekly meetings for generation of plots.

graph natural young of year yoy winter-run Chinook salmon distribution estimates
Natural Young of Year winter-run Chinook salmon distribution estimates
graph  natural young of year yoy spring-run Chinook salmon distribution estimates
Natural Young of Year spring-run Chinook salmon distribution estimates
graph  natural origin steelhead distribution estimates
Natural origin steelhead distribution estimates

Delta STARS Estimates

Current estimates generated by the Delta STARS tool. STARS Predicted Survival, Travel-Time and Routing for Late-Fall Run and Winter Run Chinook. Delta STARS developed by USGS Quantitative Fisheries Ecology Section and deployed by SacPAS.

Delta STARS Survival and Routing Estimates
StockDateRouteParameterEstimateLower 80% Credible LimitUpper 80% Credible Limit
Winter Chinook2024-11-19OverallMedian Travel Time6.48126.34136.6136
Winter Chinook2024-11-19OverallSurvival0.377250.298150.4468
Winter Chinook2024-11-19Sacramento RiverMedian Travel Time6.00766
Winter Chinook2024-11-19Sacramento RiverRouting Probability0.604760.572260.63591
Winter Chinook2024-11-19Sacramento RiverSurvival0.403930.314990.49005
Winter Chinook2024-11-19Yolo BypassMedian Travel Time9.686910
Winter Chinook2024-11-19Yolo BypassRouting Probability000
Winter Chinook2024-11-19Yolo BypassSurvival0.561530.41030.69542
Winter Chinook2024-11-19Sutter SloughMedian Travel Time6.0966
Winter Chinook2024-11-19Sutter SloughRouting Probability0.135940.115230.15877
Winter Chinook2024-11-19Sutter SloughSurvival0.369860.265310.46829
Winter Chinook2024-11-19Steamboat SloughMedian Travel Time5.98566
Winter Chinook2024-11-19Steamboat SloughRouting Probability0.134440.113610.15419
Winter Chinook2024-11-19Steamboat SloughSurvival0.439620.334920.5442
Winter Chinook2024-11-19Interior DeltaMedian Travel Time9.732910
Winter Chinook2024-11-19Interior DeltaRouting Probability0.124860.101520.14897
Winter Chinook2024-11-19Interior DeltaSurvival0.191890.117940.27431
Late-fall Chinook2024-11-19OverallMedian Travel Time12.3729.532816.573
Late-fall Chinook2024-11-19OverallSurvival0.28770.201180.38447
Late-fall Chinook2024-11-19Delta Cross ChannelMedian Travel Time20.0313.84332.134
Late-fall Chinook2024-11-19Delta Cross ChannelRouting Probability0.1840.10490.273
Late-fall Chinook2024-11-19Delta Cross ChannelSurvival0.123060.047910.25683
Late-fall Chinook2024-11-19Georgiana SloughMedian Travel Time18.59612.91428.633
Late-fall Chinook2024-11-19Georgiana SloughRouting Probability0.18250.13590.254
Late-fall Chinook2024-11-19Georgiana SloughSurvival0.168990.0643270.33021
Late-fall Chinook2024-11-19Sacramento RiverMedian Travel Time9.25826.495713.205
Late-fall Chinook2024-11-19Sacramento RiverRouting Probability0.35750.26180.429
Late-fall Chinook2024-11-19Sacramento RiverSurvival0.385010.228680.53532
Late-fall Chinook2024-11-19Sutter and Steamboat SloughMedian Travel Time9.64776.819613.527
Late-fall Chinook2024-11-19Sutter and Steamboat SloughRouting Probability0.270.2410.2951
Late-fall Chinook2024-11-19Sutter and Steamboat SloughSurvival0.348840.203870.52152

Loss&Salvage Predictor Estimates

Current estimates generated by the Loss and Salvage Predictor tool. Predicts loss and/or salvage of endangered steelhead and winter run Chinook salmon at the CVP and SWP pumping facilities at the southern end of the Sacramento-San Joaquin Delta. Available Decemer to mid-June.

Single-Year Loss Thresholds

Single-Year Loss Thresholds (PA 4-69)

In each year, typically January/February, Reclamation and DWR propose to avoid exceeding an annual loss threshold equal to 90% of the greatest annual loss that occurred in the historical record 2010-2018 for each of:

  • Natural Winter-Run Chinook Salmon (loss= 1.17% of JPE)
  • Natural Central Valley Steelhead from December through March (loss = 1,414)
  • Natural Central Valley Steelhead from April through June 15 (loss = 1,552)
(More information on PA 4-70)

Loss Summary Table

WY2025 Unclipped Chinook and Steelhead Loss Summary
WYData ItemWinter-run Chinook : 10/1-6/30Natural Steelhead : 12/1-3/31Natural Steelhead : 4/1-6/15
WY2025Loss Total Last 1-7 days (11/13/2024-11/19/2024)000
WY2025Loss Total Last 8-14 days (11/06/2024-11/12/2024)000
WY2025Cumulative Loss Total000

Natural Winter-Run Chinook Salmon Loss Figures

graph loss Natural Winter-Run Chinook Salmon
Natural LAD Winter-Run Chinook Salmon Loss Cumulative to Date with Single Year Loss Thresholds
graph loss Natural Winter-Run Chinook Salmon with WY2009-2018 history
Natural LAD Winter-Run Chinook Salmon Loss Cumulative to Date with WY2009-2018 history and Single Year Loss Thresholds
graph loss Natural Winter-Run Chinook Salmon with WY2009-2018 history
Natural LAD Winter-Run Chinook Salmon Loss Cumulative to Date with historical years and Single Year Loss Thresholds

Natural Central Valley Steelhead Loss Figures

graph Natural Central Valley Steelhead with WY2009-2018 history
Natural Central Valley Steelhead Loss Cumulative to Date with Historical Loss and Single Year Loss Thresholds
graph loss Natural Central Valley Steelhead from December through March with WY2009-2018 history
Natural Central Valley Steelhead Loss Cumulative to Date for December 1 through March 31 with Historical Loss and Single Year Loss Thresholds
graph loss Natural Central Valley Steelhead from April through June 15 with WY2009-2018 history
Natural Central Valley Steelhead Loss Cumulative to Date for April 1 throught June 15 with Historical Loss and Single Year Loss Thresholds

Daily Loss Table

WY2025 Unclipped Chinook and Steelhead Loss Daily
WYDateWinter-run Chinook : 10/1-6/30 : Daily LossWinter-run Chinook : 10/1-6/30 : Cum LossNatural Steelhead : 12/1-3/31 : Daily LossNatural Steelhead : 12/1-3/31 : Cum LossNatural Steelhead : 4/1-6/15 : Daily LossNatural Steelhead : 4/1-6/15 : Cum Loss
WYDateWinter-run Chinook : 10/1-6/30 : Daily LossWinter-run Chinook : 10/1-6/30 : Cum LossNatural Steelhead : 12/1-3/31 : Daily LossNatural Steelhead : 12/1-3/31 : Cum LossNatural Steelhead : 4/1-6/15 : Daily LossNatural Steelhead : 4/1-6/15 : Cum Loss
WY20252024-11-1900
WY20252024-11-1800
WY20252024-11-1700
WY20252024-11-1600
WY20252024-11-1500
WY20252024-11-1400
WY20252024-11-1300
WY20252024-11-1200
WY20252024-11-1100
WY20252024-11-1000
WY20252024-11-0900
WY20252024-11-0800
WY20252024-11-0700
WY20252024-11-0600
WY20252024-11-0500
WY20252024-11-0400
WY20252024-11-0300
WY20252024-11-0200
WY20252024-11-0100
WY20252024-10-3100
WY20252024-10-3000
WY20252024-10-2900
WY20252024-10-2800
WY20252024-10-2700
WY20252024-10-2600
WY20252024-10-2500
WY20252024-10-2400
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WY20252024-10-1900
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WY20252024-10-1400
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WY20252024-10-1200
WY20252024-10-1100
WY20252024-10-1000
WY20252024-10-0900
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WY20252024-10-0600
WY20252024-10-0500
WY20252024-10-0400
WY20252024-10-0300
WY20252024-10-0200
WY20252024-10-0100
Data Notes

Content on this page is updated daily during the monitoring season and includes the most up-to-date datasets contained in the SacPAS database. Juvenile monitoring and salvage data are updated as made available publicly.

  1. 2019 Biological Opinions, USBR includes link to "Chapter 4 Proposed Action" PDF
  2. Water condtions data courtesy of CDEC.
  3. Knights Landing RST and Tisdale RST data courtesy of CDFW via StreamNet.
    • The Knights Landing RST: uses Frank Fisher length-at-date model to categorize Chinook into "older" and "fry/smolt".
  4. Sacramento Trawls, Sacramento Beach Seines, Chipps Island Trawls, and Mossdale Trawls sampling data courtesy of USFWS Lodi weekly.
    • Sacramento Beach Seines: Verona, Elkhorn, Sand Cove, Miller Park, Sherwood Harbor, Discovery Park, American River, Garcia Bend.
    • 30 November 2020: Sampling at Mossdale Trawls stopped; sampling at the sites deemed "non-essential" during COVID-19 response.
  5. Salvage data courtesy of Fish Salvage Monitoring, CDFW Bay Delta Region
    • Salvage Database, ftp://ftp.dfg.ca.gov/salvage/
    • We use loss estimation methods as detailed in "Chinook Salmon Loss Estimation for Skinner Delta Fish Protective Facility and Tracy Fish Collection Facility, 7/9/2018" ftp://ftp.wildlife.ca.gov/salvage/Salmon%20loss%20estimation.docx
SacPAS Related Queries and Tools: