Workgroups & Teams

WY2026 Current Conditions for the Salmon Monitoring Team

DCC Operations

graphic Catch Index Knights Landing, Sacramento Trawls, Sacramento Beach Seines (10/1/2025 - 12/31/2025)
Catch Index Knights Landing, Sacramento Trawls, Sacramento Beach Seines (10/1/2025 - 12/31/2025)
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
2025-10-06     0 0    
2025-10-05            
2025-10-04            
2025-10-03     0 0    
2025-10-02            
2025-10-01     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
10/6/2025 125.0 -1.7% Flow>95cfs 105.7 -1.8% Flow>95cfs 7009.9    
10/5/2025 127.2 -3.8% Flow>95cfs 107.6 -5.1% Flow>95cfs 7148.2    
10/4/2025 132.2 -6.1% Flow>95cfs 113.5 -1.9% Flow>95cfs 7162.0    
10/3/2025 140.8 -4.5% Flow>95cfs 115.7 -2.5% Flow>95cfs 6882.7    
10/2/2025 147.5 -5.3% Flow>95cfs 118.6 -3.4% Flow>95cfs 6738.0    
10/1/2025 155.8 14.7% Flow>95cfs 122.8 9.9% Flow>95cfs 6670.5    
9/30/2025 135.8 11.7% Flow>95cfs 111.7 9.2% Flow>95cfs 6669.6    
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

Summary Last Two Weeks

Juvenile Sampling Summary for 09/30/2025-10/06/2025 (last 7 days) and 09/23/2025-09/29/2025 (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
09/30/2025-10/06/2025Min Sample Date2025-09-302025-10-012025-10-012025-10-012025-10-01
09/30/2025-10/06/2025Max Sample Date2025-10-062025-10-062025-10-062025-10-062025-10-06
09/30/2025-10/06/2025Days with Sampling70300
09/30/2025-10/06/2025Fall Chinook00000
09/30/2025-10/06/2025Spring Chinook00000
09/30/2025-10/06/2025Winter Chinook260000
09/30/2025-10/06/2025LateFall Chinook00000
09/30/2025-10/06/2025Chinook (ad-clip)00000
09/30/2025-10/06/2025Steelhead (natural)00000
09/30/2025-10/06/2025Steelhead (ad-clip)00000
09/30/2025-10/06/2025Avg Flow (cfs)134.46782.56897.38778.518938.618938.611569.8936.9
09/30/2025-10/06/2025Avg Water Temp (F)16.163.463.469.068.2
09/30/2025-10/06/2025Avg Turbidity (NTU)7.6
09/23/2025-09/29/2025Min Sample Date2025-09-232025-09-242025-09-232025-09-242025-09-24
09/23/2025-09/29/2025Max Sample Date2025-09-292025-09-292025-09-232025-09-292025-09-29
09/23/2025-09/29/2025Days with Sampling70100
09/23/2025-09/29/2025Fall Chinook00000
09/23/2025-09/29/2025Spring Chinook00000
09/23/2025-09/29/2025Winter Chinook10000
09/23/2025-09/29/2025LateFall Chinook00000
09/23/2025-09/29/2025Chinook (ad-clip)00000
09/23/2025-09/29/2025Steelhead (natural)00000
09/23/2025-09/29/2025Steelhead (ad-clip)00000
09/23/2025-09/29/2025Avg Flow (cfs)123.06637.96780.97542.217982.917982.95457.2743.5
09/23/2025-09/29/2025Avg Water Temp (F)18.367.667.670.673.6
09/23/2025-09/29/2025Avg Turbidity (NTU)8.5
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 10/06, with 95%CI, of annual emigrating population for juveniles of each species of interest 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, LAD Winter-run, Unclipped 45.2%
(35.2%,55.2%)
BY: 2015 - 2023
4.0%
(0.9%,7.0%)
BY: 2015 - 2024
4.3%
(2.1%,6.5%)
BY: 2015 - 2024
0.0%
(0.0%,0.0%)
BY: 2015 - 2024
0.0%
(0.0%,0.0%)
BY: 2015 - 2024
0.0%
(0.0%,0.0%)
WY: 2016 - 2025
Chinook, LAD Spring-run, Unclipped   0.0%
(0.0%,0.0%)
BY: 2015 - 2024
0.0%
(0.0%,0.0%)
BY: 2015 - 2024
0.0%
(0.0%,0.0%)
BY: 2015 - 2024
0.0%
(0.0%,0.0%)
BY: 2015 - 2024
0.0%
(0.0%,0.0%)
WY: 2016 - 2025
Steelhead, Unclipped (January-December)            
Chinook, DNA Winter-run, Unclipped (Water Year)           0.0%
(0.0%,0.0%)
WY: 2020 - 2025
Steelhead, Unclipped (Water Year)           0.0%
(0.0%,0.0%)
WY: 2016 - 2025
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.

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 Chinook2025-10-06OverallMedian Travel Time6.29555.746.5596
Winter Chinook2025-10-06OverallSurvival0.113050.0544980.18153
Winter Chinook2025-10-06Sacramento RiverMedian Travel Time5.86756
Winter Chinook2025-10-06Sacramento RiverRouting Probability0.599850.566640.6313
Winter Chinook2025-10-06Sacramento RiverSurvival0.118890.0499790.20115
Winter Chinook2025-10-06Yolo BypassMedian Travel Time10.034911
Winter Chinook2025-10-06Yolo BypassRouting Probability000
Winter Chinook2025-10-06Yolo BypassSurvival0.521680.292030.71882
Winter Chinook2025-10-06Sutter SloughMedian Travel Time5.97766
Winter Chinook2025-10-06Sutter SloughRouting Probability0.136530.11420.16043
Winter Chinook2025-10-06Sutter SloughSurvival0.15560.0658290.25601
Winter Chinook2025-10-06Steamboat SloughMedian Travel Time5.62256
Winter Chinook2025-10-06Steamboat SloughRouting Probability0.134970.115280.15466
Winter Chinook2025-10-06Steamboat SloughSurvival0.109180.0382040.19727
Winter Chinook2025-10-06Interior DeltaMedian Travel Time9.333910
Winter Chinook2025-10-06Interior DeltaRouting Probability0.128650.103570.15525
Winter Chinook2025-10-06Interior DeltaSurvival0.0460590.0105780.096919
Late-fall Chinook2025-10-06OverallMedian Travel Time10.2086.536416.379
Late-fall Chinook2025-10-06OverallSurvival0.467570.332350.59881
Late-fall Chinook2025-10-06Delta Cross ChannelMedian Travel TimeNANANA
Late-fall Chinook2025-10-06Delta Cross ChannelRouting Probability000
Late-fall Chinook2025-10-06Delta Cross ChannelSurvivalNANANA
Late-fall Chinook2025-10-06Georgiana SloughMedian Travel Time14.6647.650929.129
Late-fall Chinook2025-10-06Georgiana SloughRouting Probability0.20.20.6
Late-fall Chinook2025-10-06Georgiana SloughSurvival0.222970.0986480.38888
Late-fall Chinook2025-10-06Sacramento RiverMedian Travel Time8.8495.088215.78
Late-fall Chinook2025-10-06Sacramento RiverRouting Probability0.40.20.8
Late-fall Chinook2025-10-06Sacramento RiverSurvival0.583950.451560.69597
Late-fall Chinook2025-10-06Sutter and Steamboat SloughMedian Travel Time9.44395.345517.155
Late-fall Chinook2025-10-06Sutter and Steamboat SloughRouting Probability0.40.20.6
Late-fall Chinook2025-10-06Sutter and Steamboat SloughSurvival0.487350.320930.637

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.

plot Estimates of Winter-run Chinook Loss generated by Loss and Salvage Predictor tool
Estimates of Winter-run Chinook Loss generated by Loss and Salvage Predictor tool
plot Estimates of Steelhead Loss generated by Loss and Salvage Predictor tool
Estimates of Steelhead Loss generated by Loss and Salvage Predictor tool
Environmental Conditions, Loss and Salvage Predictor Input and Output
Parameter TokenParameter DescriptionWater YearWeekWeek TypeValue
temp.malWater Temperature °C, Mallard Island (MAL) from CDEC202538Data20.1
precipPrecipitation Inches, 5 day running sum, Stockton Fire Station (SFS) from CDEC202538Data0
om.sumOMR Flows CFS, sum of tidally-filtered discharge at Middle River and Bacon Island from USGS202538Data-6475
sacSacramento Flows CFS, Freeport (FPT) from CDEC202538Data16238
dccDCC Gate Status from BOR202538Dataopen
sjrSan Joaquin River Flow CFS, Vernalis (VNS) from CDEC 202538Data1231
exportExports CFS, sum of Pumping Discharge at HRO and TRP from CDEC202538Data4892
steelhead.pwSteelhead Previous Week202538Data0
winter.pwWinter Chinook Previous Week202538Data0
temp.malWater Temperature °C, Mallard Island (MAL) from CDEC202539Forecast20.1
precipPrecipitation Inches, 5 day running sum, Stockton Fire Station (SFS) from CDEC202539Forecast0
om.sumOMR Flows CFS, sum of tidally-filtered discharge at Middle River and Bacon Island from USGS202539Forecast-6475
sacSacramento Flows CFS, Freeport (FPT) from CDEC202539Forecast16238
dccDCC Gate Status from BOR202539Forecastopen
sjrSan Joaquin River Flow CFS, Vernalis (VNS) from CDEC 202539Forecast1231
exportExports CFS, sum of Pumping Discharge at HRO and TRP from CDEC202539Forecast4892
steelhead.pwSteelhead Previous Week202539Forecast0
winter.pwWinter Chinook Previous Week202539Forecast0
Fish, Loss and Salvage Predictor Input and Output
Parameter TokenParameter DescriptionWater YearWeekValue
Steelhead.LowPredicted Steelhead, Low %2025380
Steelhead.MedianPredicted Steelhead, Median %2025380
Steelhead.HighPredicted Steelhead, High %2025383
Winter.Run.LowPredicted Chinook Winter Run, Low %2025380
Winter.Run.MedianPredicted Chinook Winter Run, Median %2025380
Winter.Run.HighPredicted Chinook Winter Run, High %2025380
Steelhead.Observed.lossObserved Steelhead loss2025380
Winter.Run.Observed.lossObserved Chinook Winter Run loss2025380
Steelhead.Cumulative.lossObserved Steelhead Cumulative loss202538607
Winter.Run.Cumulative.lossObserved Chinook Winter Run Cumulative loss202538158
Steelhead.LowPredicted Steelhead, Low %2025390
Steelhead.MedianPredicted Steelhead, Median %2025390
Steelhead.HighPredicted Steelhead, High %2025390
Winter.Run.LowPredicted Chinook Winter Run, Low %2025390
Winter.Run.MedianPredicted Chinook Winter Run, Median %2025390
Winter.Run.HighPredicted Chinook Winter Run, High %2025390
Steelhead.Observed.lossObserved Steelhead loss202539NA
Winter.Run.Observed.lossObserved Chinook Winter Run loss202539NA
Steelhead.Cumulative.lossObserved Steelhead Cumulative loss202539607
Winter.Run.Cumulative.lossObserved Chinook Winter Run Cumulative loss202539158

Spring Surrogates

No 2026 CWT Spring Surrogate Releases.

Single-Year Loss Thresholds

Single-Year Loss Thresholds

  • Natural Winter-Run Chinook Salmon (loss= 0.5% of JPE)
  • Natural Central Valley Steelhead (loss = 3000)

Loss Summary Table

Unclipped Chinook and Steelhead Loss Summary, Monitoring Period 2025-07-01 to 2026-06-30, max data date possible 2025-10-06
Data ItemDNA Winter-run ChinookLAD Winter-run ChinookNatural Steelhead
Loss Total Last 1-7 days (09/30/2025-10/06/2025)000
Loss Total Last 8-14 days (09/23/2025-09/29/2025)000
Cumulative Loss Total (07/01/2025-06/30/2026)000
Cumulative Loss Percent of Threshold (07/01/2025-06/30/2026)0.00%NA0.00%
Single-Year Loss Threshold494.47NA3000

Natural DNA Winter-Run Chinook Salmon Loss Figures

graph loss Natural DNA Winter-Run Chinook Salmon
Natural DNA Winter-Run Chinook Salmon Loss Cumulative to Date with Single Year Loss Thresholds

Natural LAD 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 loss Natural Central Valley Steelhead
Natural Central Valley Steelhead Loss Cumulative to Date with Single Year Loss Thresholds
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 with WY2009-2018 history
Natural Central Valley Steelhead Loss Cumulative to Date with Historical Loss and Single Year Loss Thresholds

Daily Loss Table

Unclipped Chinook and Steelhead Loss Daily, Monitoring Period 2025-07-01 to 2026-06-30
DateDNA Winter-run Chinook : Daily LossDNA Winter-run Chinook : Cum LossLAD Winter-run Chinook : Daily LossLAD Winter-run Chinook : Cum LossNatural Steelhead : Daily LossNatural Steelhead : Cum Loss
DateDNA Winter-run Chinook : Daily LossDNA Winter-run Chinook : Cum LossLAD Winter-run Chinook : Daily LossLAD Winter-run Chinook : Cum LossNatural Steelhead : Daily LossNatural Steelhead : Cum Loss
2025-10-06000000
2025-10-05000000
2025-10-04000000
2025-10-03000000
2025-10-02000000
2025-10-01000000
2025-09-30000000
2025-09-29000000
2025-09-28000000
2025-09-27000000
2025-09-26000000
2025-09-25000000
2025-09-24000000
2025-09-23000000
2025-09-22000000
2025-09-21000000
2025-09-20000000
2025-09-19000000
2025-09-18000000
2025-09-17000000
2025-09-16000000
2025-09-15000000
2025-09-14000000
2025-09-13000000
2025-09-12000000
2025-09-11000000
2025-09-10000000
2025-09-09000000
2025-09-08000000
2025-09-07000000
2025-09-06000000
2025-09-05000000
2025-09-04000000
2025-09-03000000
2025-09-02000000
2025-09-01000000
2025-08-31000000
2025-08-30000000
2025-08-29000000
2025-08-28000000
2025-08-27000000
2025-08-26000000
2025-08-25000000
2025-08-24000000
2025-08-23000000
2025-08-22000000
2025-08-21000000
2025-08-20000000
2025-08-19000000
2025-08-18000000
2025-08-17000000
2025-08-16000000
2025-08-15000000
2025-08-14000000
2025-08-13000000
2025-08-12000000
2025-08-11000000
2025-08-10000000
2025-08-09000000
2025-08-08000000
2025-08-07000000
2025-08-06000000
2025-08-05000000
2025-08-04000000
2025-08-03000000
2025-08-02000000
2025-08-01000000
2025-07-31000000
2025-07-30000000
2025-07-29000000
2025-07-28000000
2025-07-27000000
2025-07-26000000
2025-07-25000000
2025-07-24000000
2025-07-23000000
2025-07-22000000
2025-07-21000000
2025-07-20000000
2025-07-19000000
2025-07-18000000
2025-07-17000000
2025-07-16000000
2025-07-15000000
2025-07-14000000
2025-07-13000000
2025-07-12000000
2025-07-11000000
2025-07-10000000
2025-07-09000000
2025-07-08000000
2025-07-07000000
2025-07-06000000
2025-07-05000000
2025-07-04000000
2025-07-03000000
2025-07-02000000
2025-07-01000000

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. Long-Term Operation of the Central Valley Project and State Water Project, Bay-Delta Office, USBR
  2. Long-Term Operation – Biological Assessment: Chapter 3 – Proposed Action, USBR
    • 3.7.4.5.3 Winter-Run Chinook Salmon Annual Loss Threshold, pg 3-62
    • 3.7.4.5.5 Steelhead Annual Threshold, pg 3-65
  3. Water condtions data courtesy of CDEC.
  4. 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".
  5. 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.
  6. 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, " ftp://ftp.wildlife.ca.gov/salvage/Salmon%20loss%20estimation.docx
SacPAS Related Queries and Tools: