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
2024-12-30     1.6 2.3    
2024-12-29            
2024-12-28            
2024-12-27     3.2 5.3 SacBeach 5.3 SacTrawl 3.2
2024-12-26     0      
2024-12-25            
2024-12-24            
2024-12-23 0 0 0.8 0    
2024-12-22 0 0        
2024-12-21 0 0        
2024-12-20 0 0 0 1.3    
2024-12-19 7.8 8.2     KNLOlder 8.2
KNLWinter 7.8
 
2024-12-18 5.5 6.9 0.8 0 KNLOlder 6.9
KNLWinter 5.5
 
2024-12-17            
2024-12-16     2.4 4.8   SacBeach 4.8
2024-12-15            
2024-12-14            
2024-12-13 0 0        
2024-12-12 0 0 0 0    
2024-12-11 1.0 1.0 0 0    
2024-12-10 0 0        
2024-12-09 0 0 0 0    
2024-12-08 0.5 0.5        
2024-12-07 0 0        
2024-12-06 0.7 1.4 0 1.6    
2024-12-05 1.2 1.2        
2024-12-04 1.3 1.3 0 0    
2024-12-03 0 0        
2024-12-02     0 2.0    
2024-12-01            
2024-11-30            
2024-11-29       1.6    
2024-11-28            
2024-11-27     15.2 3.0 SacTrawl 15.2  
2024-11-26     27.2   SacTrawl 27.2  
2024-11-25     21.6 4.0 SacTrawl 21.6 SacBeach 4.0
2024-11-24            
2024-11-23            
2024-11-22       0    
2024-11-21 0 0 0      
2024-11-20 0 0 0 0    
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
5/28/2025 427.2 4.6% Flow>95cfs 184.5 -1.9% Flow>95cfs 8118.2 44.76 WLK>7500cfs and KNL<56.3F
5/27/2025 408.3 -6.7% Flow>95cfs 188.2 -1.1% Flow>95cfs 8792.5 49.8 WLK>7500cfs and KNL<56.3F
5/26/2025 437.5 0.7% Flow>95cfs 190.2 -2.4% Flow>95cfs 9738.0 49.8 WLK>7500cfs and KNL<56.3F
5/25/2025 434.6 2.0% Flow>95cfs 194.8 -2.1% Flow>95cfs 10570.2 49.9 WLK>7500cfs and KNL<56.3F
5/24/2025 426.2 1.0% Flow>95cfs 198.9 -1.1% Flow>95cfs 10349.9 51.1 WLK>7500cfs and KNL<56.3F
5/23/2025 422.1 0.3% Flow>95cfs 201.1 -1.8% Flow>95cfs 10126.5 51.1 WLK>7500cfs and KNL<56.3F
5/22/2025 421.0 0.6% Flow>95cfs 204.8 -2.1% Flow>95cfs 9510.2 50.8 WLK>7500cfs and KNL<56.3F
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 05/22/2025-05/28/2025 (last 7 days) and 05/15/2025-05/21/2025 (previous 7 days)

Juvenile Sampling Summary for 05/22/2025-05/28/2025 (last 7 days) and 05/15/2025-05/21/2025 (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
05/22/2025-05/28/2025Min Sample Date2025-05-222025-05-222025-05-232025-05-282025-05-232025-05-22
05/22/2025-05/28/2025Max Sample Date2025-05-282025-05-272025-05-282025-05-282025-05-282025-05-22
05/22/2025-05/28/2025Days with Sampling760100
05/22/2025-05/28/2025Fall Chinook22121290
05/22/2025-05/28/2025Spring Chinook000000
05/22/2025-05/28/2025Winter Chinook000000
05/22/2025-05/28/2025LateFall Chinook000000
05/22/2025-05/28/2025Chinook (ad-clip)700000
05/22/2025-05/28/2025Steelhead (natural)000000
05/22/2025-05/28/2025Steelhead (ad-clip)000000
05/22/2025-05/28/2025Avg Flow (cfs)262.610724.29600.84712.718332.218332.214584.92207.0
05/22/2025-05/28/2025Avg Water Temp (F)49.649.066.566.566.664.0
05/22/2025-05/28/2025Avg Turbidity (NTU)14.51.924.3
05/15/2025-05/21/2025Min Sample Date2025-05-152025-05-152025-05-162025-05-152025-05-162025-05-15
05/15/2025-05/21/2025Max Sample Date2025-05-212025-05-212025-05-212025-05-202025-05-212025-05-20
05/15/2025-05/21/2025Days with Sampling770300
05/15/2025-05/21/2025Fall Chinook11411016226
05/15/2025-05/21/2025Spring Chinook201030
05/15/2025-05/21/2025Winter Chinook000000
05/15/2025-05/21/2025LateFall Chinook100000
05/15/2025-05/21/2025Chinook (ad-clip)200000
05/15/2025-05/21/2025Steelhead (natural)200000
05/15/2025-05/21/2025Steelhead (ad-clip)000000
05/15/2025-05/21/2025Avg Flow (cfs)323.89380.98012.74682.817442.817442.816320.72015.1
05/15/2025-05/21/2025Avg Water Temp (F)50.648.365.665.666.665.8
05/15/2025-05/21/2025Avg Turbidity (NTU)16.02.516.1
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 05/28, 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 100.0%
(100.0%,100.0%)
BY: 2015 - 2023
100.0%
(100.0%,100.0%)
BY: 2015 - 2023
100.0%
(100.0%,100.0%)
BY: 2015 - 2023
100.0%
(100.0%,100.0%)
BY: 2015 - 2023
100.0%
(100.0%,100.0%)
BY: 2015 - 2023
100.0%
(100.0%,100.0%)
WY: 2015 - 2024
Chinook, LAD Spring-run, Unclipped 99.9%
(99.7%,100.0%)
BY: 2015 - 2023
100.0%
(100.0%,100.0%)
BY: 2015 - 2023
100.0%
(100.0%,100.0%)
BY: 2015 - 2023
100.0%
(100.0%,100.0%)
BY: 2015 - 2023
99.7%
(99.3%,100.1%)
BY: 2015 - 2023
96.0%
(89.6%,102.4%)
WY: 2015 - 2024
Steelhead, Unclipped (January-December) 32.5%
(15.7%,49.4%)
BY: 2015 - 2024
85.4%
(64.8%,106.0%)
BY: 2015 - 2024
81.8%
(64.6%,99.0%)
BY: 2015 - 2024
95.6%
(90.1%,101.0%)
BY: 2015 - 2024
94.2%
(88.7%,99.7%)
BY: 2015 - 2024
 
Chinook, DNA Winter-run, Unclipped (Water Year)           100.0%
(100.0%,100.0%)
WY: 2020 - 2024
Steelhead, Unclipped (Water Year)           96.3%
(92.2%,100.5%)
WY: 2015 - 2024
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 Chinook2025-05-28OverallMedian Travel Time6.25085.60566.577
Winter Chinook2025-05-28OverallSurvival0.00338967.6964e-50.0080825
Winter Chinook2025-05-28Sacramento RiverMedian Travel Time5.79956
Winter Chinook2025-05-28Sacramento RiverRouting Probability0.5960.559610.631
Winter Chinook2025-05-28Sacramento RiverSurvival0.0031425.0615e-50.00725
Winter Chinook2025-05-28Yolo BypassMedian Travel Time10.061911
Winter Chinook2025-05-28Yolo BypassRouting Probability000
Winter Chinook2025-05-28Yolo BypassSurvival0.35370.0300060.70985
Winter Chinook2025-05-28Sutter SloughMedian Travel Time6.00566
Winter Chinook2025-05-28Sutter SloughRouting Probability0.136840.114150.16123
Winter Chinook2025-05-28Sutter SloughSurvival0.00670841.3971e-40.015546
Winter Chinook2025-05-28Steamboat SloughMedian Travel Time5.56356
Winter Chinook2025-05-28Steamboat SloughRouting Probability0.138240.115980.1614
Winter Chinook2025-05-28Steamboat SloughSurvival0.00300892.7905e-50.0073156
Winter Chinook2025-05-28Interior DeltaMedian Travel Time9.333910
Winter Chinook2025-05-28Interior DeltaRouting Probability0.128920.104060.15698
Winter Chinook2025-05-28Interior DeltaSurvival0.00142111.3494e-50.0032021
Late-fall Chinook2025-05-28OverallMedian Travel Time11.8089.015916.133
Late-fall Chinook2025-05-28OverallSurvival0.3990.297450.49829
Late-fall Chinook2025-05-28Delta Cross ChannelMedian Travel TimeNANANA
Late-fall Chinook2025-05-28Delta Cross ChannelRouting Probability000
Late-fall Chinook2025-05-28Delta Cross ChannelSurvivalNANANA
Late-fall Chinook2025-05-28Georgiana SloughMedian Travel Time16.75211.56525.434
Late-fall Chinook2025-05-28Georgiana SloughRouting Probability0.280.21990.396
Late-fall Chinook2025-05-28Georgiana SloughSurvival0.180670.0820380.33195
Late-fall Chinook2025-05-28Sacramento RiverMedian Travel Time9.88437.174214.243
Late-fall Chinook2025-05-28Sacramento RiverRouting Probability0.4560.34490.52
Late-fall Chinook2025-05-28Sacramento RiverSurvival0.535330.377530.65166
Late-fall Chinook2025-05-28Sutter and Steamboat SloughMedian Travel Time10.4447.46914.998
Late-fall Chinook2025-05-28Sutter and Steamboat SloughRouting Probability0.2630.2350.294
Late-fall Chinook2025-05-28Sutter and Steamboat SloughSurvival0.413670.245240.57969

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 CDEC202534Data19.5
precipPrecipitation Inches, 5 day running sum, Stockton Fire Station (SFS) from CDEC202534Data0
om.sumOMR Flows CFS, sum of tidally-filtered discharge at Middle River and Bacon Island from USGS202534Data-4886
sacSacramento Flows CFS, Freeport (FPT) from CDEC202534Data17330
dccDCC Gate Status from BOR202534Dataopen
sjrSan Joaquin River Flow CFS, Vernalis (VNS) from CDEC 202534Data2038
exportExports CFS, sum of Pumping Discharge at HRO and TRP from CDEC202534Data3842
steelhead.pwSteelhead Previous Week202534Data0
winter.pwWinter Chinook Previous Week202534Data0
temp.malWater Temperature °C, Mallard Island (MAL) from CDEC202535Forecast19.5
precipPrecipitation Inches, 5 day running sum, Stockton Fire Station (SFS) from CDEC202535Forecast0
om.sumOMR Flows CFS, sum of tidally-filtered discharge at Middle River and Bacon Island from USGS202535Forecast-4886
sacSacramento Flows CFS, Freeport (FPT) from CDEC202535Forecast17330
dccDCC Gate Status from BOR202535Forecastopen
sjrSan Joaquin River Flow CFS, Vernalis (VNS) from CDEC 202535Forecast2038
exportExports CFS, sum of Pumping Discharge at HRO and TRP from CDEC202535Forecast3842
steelhead.pwSteelhead Previous Week202535Forecast0
winter.pwWinter Chinook Previous Week202535Forecast0
Fish, Loss and Salvage Predictor Input and Output
Parameter TokenParameter DescriptionWater YearWeekValue
Steelhead.LowPredicted Steelhead, Low %2025340
Steelhead.MedianPredicted Steelhead, Median %2025340
Steelhead.HighPredicted Steelhead, High %2025345
Winter.Run.LowPredicted Chinook Winter Run, Low %2025340
Winter.Run.MedianPredicted Chinook Winter Run, Median %2025340
Winter.Run.HighPredicted Chinook Winter Run, High %2025340
Steelhead.Observed.lossObserved Steelhead loss20253410
Winter.Run.Observed.lossObserved Chinook Winter Run loss2025340
Steelhead.Cumulative.lossObserved Steelhead Cumulative loss202534600
Winter.Run.Cumulative.lossObserved Chinook Winter Run Cumulative loss202534158
Steelhead.LowPredicted Steelhead, Low %2025350
Steelhead.MedianPredicted Steelhead, Median %2025350
Steelhead.HighPredicted Steelhead, High %2025355
Winter.Run.LowPredicted Chinook Winter Run, Low %2025350
Winter.Run.MedianPredicted Chinook Winter Run, Median %2025350
Winter.Run.HighPredicted Chinook Winter Run, High %2025350
Steelhead.Observed.lossObserved Steelhead loss202535NA
Winter.Run.Observed.lossObserved Chinook Winter Run loss202535NA
Steelhead.Cumulative.lossObserved Steelhead Cumulative loss202535600
Winter.Run.Cumulative.lossObserved Chinook Winter Run Cumulative loss202535158

Spring Surrogates

Spring-Run Chinook Salmon Hatchery Surrogate Summary Table, Water Year 2025
Type Hatchery Release Start Release End Race Total # of Fish Released # of CWT Fish Released Tag Codes Loss Threshold (0.25% of CWT Released) Confirmed Loss % Loss of CWT Number Released First Loss Last Loss Confirmed Loss CWT Tag Codes
Yearling Coleman NFH 2024-11-20 2024-11-20 Late-Fall 698,892 698,892050038, 050039, 050040, 050041, 050042, 050043, 050044, 052900, 053300, 053400, 053500 1747.23 1051.21 0.15% 2024-11-29 2025-04-05050038, 050039, 050040, 050041, 050042, 050043, 050044, 052900, 053300, 053400, 053500
Yearling Coleman NFH 2024-12-13 2024-12-13 Late-Fall 77,355 77,355053100 193.39 72.52 0.09% 2024-12-25 2025-01-12053100
Yearling Coleman NFH 2025-01-17 2025-01-17 Late-Fall 74,425 74,425053000 186.06 43.34 0.06% 2025-01-30 2025-04-04053000
Young-of-year Feather River Hatchery 2025-03-14 2025-03-14 Spring 961,411 476,741063233 1191.85 16.56 0.00% 2025-04-06 2025-04-06063233
Young-of-year Feather River Hatchery 2025-03-21 2025-03-21 Spring 962,741 475,831063230 1189.58 110.13 0.02% 2025-03-31 2025-05-02063230
Young-of-year Feather River Hatchery 2025-04-09 2025-04-09 Spring 1,012,800 504,304061537, 062012, 062884 1260.76 0.00 0.00%
Young-of-year Feather River Hatchery 2025-04-23 2025-04-24 Fall 1,505,055 376,122063265, 063195 940.31 0.00 0.00%
Young-of-year Coleman NFH 2025-04-15 2025-04-15 Fall 2,122,103 695,170056600, 056700, 056747, 056748, 056768, 056800 1737.93 0.00 0.00%
Young-of-year Coleman NFH 2025-04-28 2025-04-30 Fall 1,472,338 368,085056750, 056751, 056749, 056752 920.21 0.00 0.00%
Surrogate releases identified by SaMT and based on PA 3.7.4.5.7.

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 2024-07-01 to 2025-06-30, max data date possible 2025-05-28
Data ItemDNA Winter-run ChinookLAD Winter-run ChinookNatural Steelhead
Loss Total Last 1-7 days (05/22/2025-05/28/2025)0010.2
Loss Total Last 8-14 days (05/15/2025-05/21/2025)000
Cumulative Loss Total (07/01/2024-06/30/2025)28.83158.36599.54
Cumulative Loss Percent of Threshold (07/01/2024-06/30/2025)5.83%NA19.98%
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 2024-07-01 to 2025-06-30
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
2025-05-28028.830158.360599.54
2025-05-27028.830158.360599.54
2025-05-26028.830158.362.72599.54
2025-05-25028.830158.362.72596.82
2025-05-24028.830158.362.72594.1
2025-05-23028.830158.360591.38
2025-05-22028.830158.362.04591.38
2025-05-21028.830158.360589.34
2025-05-20028.830158.360589.34
2025-05-19028.830158.360589.34
2025-05-18028.830158.360589.34
2025-05-17028.830158.360589.34
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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, 7/9/2018" ftp://ftp.wildlife.ca.gov/salvage/Salmon%20loss%20estimation.docx
SacPAS Related Queries and Tools: