SacPAS: Central Valley Prediction & Assessment of Salmon

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Delta Smelt


Generated: 25 Oct 2020 16:20:01 PDT. download Daily CSV   download Hourly CSV  

Delta Smelt Tables
Plots || Water Temperature|| Onset of OMR Management|| Turbidity Bridge Avoidance|| Larval and Juvenile Delta Smelt Protection|| End of OMR Management|| Operations and Hydrology
Tables || EDSM Detail|| Daily Data|| Hourly Data

This page is regenerated 4 times a day and includes the most up-to-date datasets contained in the SacPAS database based on the following automated loading processes:
7:20 am file: CDEC 6:00 am, EDSM 7:00 am
9:20 am file: CDEC 6:00 am, EDSM 7:00 am, Delta Operations 9:05 am, OMR calculations 9:10 am
12:20 pm file: CDEC 6:00 am, EDSM 7:00 am, Delta Operations #2 12:05 pm, OMR calculations 9:10 am
4:20 pm file: CDEC 6:00 am, EDSM #2 4:00 pm, Delta Operations #2 12:05 pm, OMR calculations 9:10 am, Chipps 4:10 pm Mondays

Smelt Monitoring

Smelt Monitoring Last 2 Weeks

MonitoringSpeciesFirst DateLast DatenfishSacPAS Max Possible DateSacPAS Data Retrieval Method
EDSMLongfin Smelt All2020-10-142020-10-1522020-10-22Twice daily check, automated processing
EDSMLongfin Smelt -- No Expression2020-10-152020-10-1512020-10-22Twice daily check, automated processing

Table only displays species collected in the previous two weeks.

Smelt Monitoring WY2021

MonitoringSpeciesFirst DateLast DatenfishSacPAS Max Possible DateSacPAS Data Retrieval Method
EDSMLongfin Smelt All2020-10-142020-10-1522020-10-22Twice daily check, automated processing
EDSMLongfin Smelt -- No Expression2020-10-152020-10-1512020-10-22Twice daily check, automated processing

EDSM does not check Delta Smelt under 50mm for expression. EDSM does not check Longfin Smelt under 65mm for expression.

Salvage at the SWP and CVP Delta Fish Facilities

Smelt Salvage Last 2 Weeks

No Delta Smelt or Longfin Smelt caught in SWP and CVP Facilities last 2 weeks. Based on daily retrieval of CDFW Salvage DB, automated processing; smelt sampling not consistently included in Salvage DB.

SacPAS Max Possible Date: 2020-10-21

Smelt Salvage WY2021

No Delta Smelt or Longfin Smelt caught in SWP and CVP Facilities WY2021. Based on daily retrieval of CDFW Salvage DB, automated processing; smelt sampling not consistently included in Salvage DB.

SacPAS Max Possible Date: 2020-10-21

Water Temperature

graph water temperature daily

Onset of OMR Management

graph freeport 3day running average

The information on OMR Managment on this website is summarized for Delta Smelt from the OMR Entrainment Management Guidance Document and does not reflect a comprehensive description of each of the OMR actions.

"First Flush" conditions may be triggered between December 1 and January 31 and include: Running 3-day average of the daily flows at Freeport is greater than 25,000 cfs and running 3-day average of the daily turbidity at Freeport is 50 NTU or greater, or real-time monitoring indicates a high risk of migration and dispersal into areas at high risk of future entrainment. This "First Flush" may only be initiated once during the December through January period and will not be required if: spent female Delta Smelt are collected in monitoring surveys.

Turbidity Bridge Avoidance

graph turbidity daily average sacramento san joaquin

Turbidity Bridge Avoidance ("South Delta Turbidity"): After the Integrated Early Winter Pulse Protection (above) or February 1 (whichever comes first) and until a ripe or spent female is detected or April 1 (whichever is first), Reclamation and DWR propose to manage exports in order to maintain daily average turbidity in Old River at Bacon Island (OBI) at a level of less than 12 NTU. Reclamation and DWR recognize that readings at individual sensors or localized groups of sensors can generate spurious results in real-time. To avoid triggering an OMR flow action during a sensor error or a localized turbidity spike that might be caused by local flows or a wind-driven event, Reclamation and DWR will consider and review data from other locations.

Larval and Juvenile Delta Smelt Protection

graph operations QWEST NDOI X2 daily

End of OMR Management

graph clifton court daily

OMR criteria may control operations until June 30 (for Delta Smelt and Chinook salmon), until June 15 (for steelhead/rainbow trout), or when the following species-specific off ramps have occurred, whichever is earlier.

Delta Smelt: when the daily mean water temperature at CCF reaches 77°F for 3 consecutive days. 77°F is equal to 25°C.

Operations and Hydrology

graph old river flow daily graph omr index graph pumping and flow into delta daily graph Barker Slough temperature and turbidity daily

EDSM WY 2021 (10/01/2020 - 09/30/2021)

Delta Smelt and Longfin Smelt caught in Enhanced Delta Smelt Monitoring (EDSM)
DateSpeciesnfishFork Length RangeExpressionSubregionStratumRegionMethod
2020-10-14Longfin smelt162-62Grizzly BaySuisun MarshWestKodiak
2020-10-15Longfin smelt1101-101XWest Suisun BaySuisun BayFar WestKodiak

Daily Data for Last 2 Weeks

DateWater Temperature SJR at Antioch (C)Water Temperature SR at Rio Vista Bridge (C)Water Temperature SJR at Mossdale Bridge (C)Water Temperature 3 Station Avg (C)River Discharge Flow 3-day Freeport (CFS)Turbidity 3-day Freeport (FNU)Water Turbidity 1-day Prisoner's Point (NTU)Water Turbidity 1-day Holland Cut (FNU)Water Turbidity 1-day Victoria Canal (NTU)Water Turbidity 1-day Old River at Bacon Island (USGS) (FNU)QWEST (CFS)NDOI (CFS)E/I Ratio 3 day (%)X2 Position (KM)Water Temperature Clifton Court (C)OMR Index 5-day (CFS)OMR Index 14-day (CFS)USGS Tidally Filtered OMR 5-day mean (CFS)USGS Tidally Filtered OMR 14-day mean (CFS)Sum Pumping Discharge HRO+TRP (CFS)Pumping Discharge Banks Pumping Plant (CFS)Pumping Discharge Tracy Pumping Plant (CFS)River Discharge Flow SR at Freeport (CFS)River Discharge Flow SJR near Vernalis (CFS)Water Temperature C Barker Slough (C)Turbidity Barker Slough (NTU)Pumping Discharge Barker Slough (NTU)
DateWater Temperature SJR at Antioch (C)Water Temperature SR at Rio Vista Bridge (C)Water Temperature SJR at Mossdale Bridge (C)Water Temperature 3 Station Avg (C)River Discharge Flow 3-day Freeport (CFS)Turbidity 3-day Freeport (FNU)Water Turbidity 1-day Prisoner's Point (NTU)Water Turbidity 1-day Holland Cut (FNU)Water Turbidity 1-day Victoria Canal (NTU)Water Turbidity 1-day Old River at Bacon Island (USGS) (FNU)QWEST (CFS)NDOI (CFS)E/I Ratio 3 day (%)X2 Position (KM)Water Temperature Clifton Court (C)OMR Index 5-day (CFS)OMR Index 14-day (CFS)USGS Tidally Filtered OMR 5-day mean (CFS)USGS Tidally Filtered OMR 14-day mean (CFS)Sum Pumping Discharge HRO+TRP (CFS)Pumping Discharge Banks Pumping Plant (CFS)Pumping Discharge Tracy Pumping Plant (CFS)River Discharge Flow SR at Freeport (CFS)River Discharge Flow SJR near Vernalis (CFS)Water Temperature C Barker Slough (C)Turbidity Barker Slough (NTU)Pumping Discharge Barker Slough (NTU)
2020-10-1120.0719.7420.1019.979206.902.562.721.332.261.71480391336.4%21.57-3600-4540-4040-53103662239.003423.009424.54764.21
2020-10-1220.0719.5619.8519.839007.472.432.441.212.352.09694451736.2%8221.39-3580-4410-3900-51603691282.003409.008680.25825.00
2020-10-1320.2219.5920.1319.988762.282.501.123.701.88191356838.4%8221.32-3550-4270-3950-49904161753.003408.008182.04743.96
2020-10-1420.4219.6420.4020.158474.783.031.193.481.99-147382838.5%8221.43-3530-4080-4080-48403689282.003407.008562.04706.46
2020-10-1520.5319.5620.4520.188349.043.111.182.551.99-1904424038.8%8221.34-4260-47603685282.003403.008303.04735.92
2020-10-1620.5219.5120.4120.158302.882.263.201.152.532.55-2001394437.5%8221.18-4530-46903691282.003409.008043.54897.96
2020-10-1720.5819.5220.0020.038066.112.003.111.373.482.15-1915381037.6%21.16-4630-46103687282.003405.007851.751235.52
2020-10-1820.6719.6019.2719.857897.672.033.291.414.312.56-144393137.9%21.25-4620-45203688282.003406.007797.711929.76
2020-10-1920.6819.6918.6719.687833.492.053.031.303.542.501577453937.3%8221.31-4610-44203738282.003456.007851.002150.92
2020-10-2020.7019.8018.4919.667693.002.053.061.182.051.821805477536.4%8221.35-4530-43303721282.003439.007430.291801.17
2020-10-2120.7419.8618.5719.727577.391.922.821.131.931.601443494233.8%8221.28-4320-42503006282.002724.007450.881383.17
2020-10-2220.5019.6918.5619.587636.511.852.731.102.311.72-718440732.3%8221.00-4060-41802951235.002716.008028.381174.84
2020-10-2319.9719.3117.7719.027776.531.792.341.091.502.548220.493011303.002708.007850.331164.00
2020-10-2419.5318.9717.1818.567858.581.792.411.101.641.7219.972970262.002708.007697.041474.42
X2 Position Note: For plotting purposes, SacPAS substitutes '>81km' with '82' and '<56km' with '55' from the 'Delta Operations Summary (daily)' pdf from California Department of Water Resources, Operations and Delta Status

Hourly Data for Last 7 Days

DateHourRiver Discharge Flow Old River at Bacon Island (USGS) (CFS)River Discharge Flow Old River at Hwy 4 (CFS)
DateHourRiver Discharge Flow Old River at Bacon Island (USGS) (CFS)River Discharge Flow Old River at Hwy 4 (CFS)
2020-10-1808630.003470.00
2020-10-1817310.002260.00
2020-10-1824670.001400.00
2020-10-183-4290.00357.00
2020-10-184-13900.00-4980.00
2020-10-185-13800.00-6990.00
2020-10-186-14100.00-7210.00
2020-10-187-12100.00-6970.00
2020-10-188-8500.00-6350.00
2020-10-1891240.00-3950.00
2020-10-18108200.001510.00
2020-10-18119140.004870.00
2020-10-18128530.003870.00
2020-10-18135050.002650.00
2020-10-1814-2230.001660.00
2020-10-1815-14400.00-4300.00
2020-10-1816-14900.00-7840.00
2020-10-1817-15900.00-7850.00
2020-10-1818-14900.00-7680.00
2020-10-1819-12100.00-7750.00
2020-10-1820-5480.00-6950.00
2020-10-18215300.00-2680.00
2020-10-18229870.003320.00
2020-10-182311100.004850.00
2020-10-19010300.004270.00
2020-10-1919550.003100.00
2020-10-1927010.002220.00
2020-10-1934280.001770.00
2020-10-194-3350.00790.00
2020-10-195-13900.00-4570.00
2020-10-196-13100.00-6940.00
2020-10-197-12400.00-6850.00
2020-10-198-11900.00-6580.00
2020-10-199-7480.00-5930.00
2020-10-19101100.00-3690.00
2020-10-19117750.001450.00
2020-10-19128410.004640.00
2020-10-19138000.004120.00
2020-10-19144610.002760.00
2020-10-1915-4240.00-147.00
2020-10-1916-14200.00-6220.00
2020-10-1917-15000.00-7910.00
2020-10-1918-14900.00-7460.00
2020-10-1919-13500.00-7540.00
2020-10-1920-10200.00-7490.00
2020-10-1921-540.00-5680.00
2020-10-19229140.00140.00
2020-10-192310900.004410.00
2020-10-20010800.004730.00
2020-10-2019490.003110.00
2020-10-2028140.002480.00
2020-10-2036880.002550.00
2020-10-2046100.002250.00
2020-10-205-2220.00864.00
2020-10-206-13000.00-4170.00
2020-10-207-12700.00-6840.00
2020-10-208-12300.00-6890.00
2020-10-209-11700.00-6280.00
2020-10-2010-8390.00-5740.00
2020-10-2011-698.00-4140.00
2020-10-20125930.0092.00
2020-10-20137800.004040.00
2020-10-20146700.004160.00
2020-10-20151530.002360.00
2020-10-2016-6880.00-1980.00
2020-10-2017-13800.00-7060.00
2020-10-2018-14500.00-7890.00
2020-10-2019-13800.00-7350.00
2020-10-2020-12400.00-7410.00
2020-10-2021-7280.00-7070.00
2020-10-20223530.00-3890.00
2020-10-20239000.002040.00
2020-10-21010600.004800.00
2020-10-21110800.004140.00
2020-10-2129000.002960.00
2020-10-2138830.002730.00
2020-10-2147110.003220.00
2020-10-2155210.002930.00
2020-10-216-3510.00954.00
2020-10-217-13200.00-4150.00
2020-10-218-13000.00-6700.00
2020-10-219-12400.00-6240.00
2020-10-2110-11100.00-5850.00
2020-10-2111-8070.00-5280.00
2020-10-2112-3080.00-4240.00
2020-10-21133880.00-1060.00
2020-10-21147400.003070.00
2020-10-21156710.004250.00
2020-10-21161180.002320.00
2020-10-2117-6690.00-1970.00
2020-10-2118-12800.00-6480.00
2020-10-2119-13700.00-6970.00
2020-10-2120-12400.00-6600.00
2020-10-2121-11100.00-7160.00
2020-10-2122-4630.00-6050.00
2020-10-21235520.00-2470.00
2020-10-2209510.003140.00
2020-10-22111400.004630.00
2020-10-22211300.004350.00
2020-10-2239420.003140.00
2020-10-2248040.002800.00
2020-10-2257440.002080.00
2020-10-2263860.001950.00
2020-10-227-4660.001130.00
2020-10-228-12200.00-4270.00
2020-10-229-12800.00-6580.00
2020-10-2210-12900.00-6530.00
2020-10-2211-11800.00-6220.00
2020-10-2212-9700.00-5180.00
2020-10-2213-5130.00-5040.00
2020-10-22141090.00-2290.00
2020-10-22155870.001350.00
2020-10-22166170.003290.00
2020-10-22173270.003020.00
2020-10-2218-3550.00-259.00
2020-10-2219-11300.00-5410.00
2020-10-2220-12800.00-6420.00
2020-10-2221-11700.00-6290.00
2020-10-2222-9860.00-6570.00
2020-10-2223-4770.00-5660.00
2020-10-2304630.00-2010.00
2020-10-2318840.002940.00
2020-10-23210700.004550.00
2020-10-23310400.002990.00
2020-10-2348330.002600.00
2020-10-2358070.002700.00
2020-10-2366030.002780.00
2020-10-2373880.002700.00
2020-10-238-652.001870.00
2020-10-239-10200.00-3790.00
2020-10-2310-11200.00-6620.00
2020-10-2311-11400.00-6420.00
2020-10-2312-10800.00-6000.00
2020-10-2313-8580.00-5720.00
2020-10-2314-5480.00-5090.00
2020-10-2315718.00-3590.00
2020-10-23166520.00324.00
2020-10-23177210.00
2020-10-23186520.003790.00
2020-10-2319-189.001720.00
2020-10-2320-7800.00-2890.00
2020-10-2321-11200.00-5530.00
2020-10-2322-10900.00-6030.00
2020-10-2323-9020.00-5610.00
2020-10-240-4670.00
2020-10-2413870.00-2820.00
2020-10-2428230.002110.00
2020-10-2439610.004060.00
2020-10-2449690.003540.00
2020-10-2458490.002010.00
2020-10-2466590.002200.00
2020-10-2476490.002720.00
2020-10-2484730.003070.00
2020-10-249-1580.001680.00
2020-10-2410-12000.00-4040.00
2020-10-2411-12000.00-6510.00
2020-10-2412-11700.00-6680.00
2020-10-2413-11900.00-6080.00
2020-10-2414-9760.00-6000.00
2020-10-2415-6210.00-5790.00
2020-10-24161160.00-4190.00
2020-10-24177650.0094.00
2020-10-24188330.003330.00
2020-10-24197480.003480.00
2020-10-24205170.002730.00
2020-10-2421-4020.0053.00
2020-10-2422-11600.00-4630.00
2020-10-2423-11700.00-5950.00

Data Set Notes:

  1. We obtain salvage data from Fish Salvage Monitoring, CDFW Bay Delta Region
    • 20 April 2018: Due to an update strategy based on unique row identifiers, the SacPAS database occasionally accumulated duplicate rows of salvage data at the SWP and CVP. This resulted in salvage and loss numbers inflated by approximately 20% during the season (February-April, 2018). We have improved our data assimilation process and now report salvage and loss in line with the numbers from CDFW-Bay Delta Region. We would like to thank Geir Aasen at CDFW for his assistance in identifying and resolving this issue with SacPAS salvage and loss calculations.
  2. We obtain Export data from two sources:
    • Acrefeet in the Access database posted to ftp://ftp.dfg.ca.gov/salvage/ - the entire record is loaded daily
    • CFS from the CDEC sites HRO (for SWP) and TRP (for CVP) - 7 day window loaded daily
  3. The Delta Outflow, Sacramento River and San Joaquin River flow data are obtained from two sources:
    • CFS from CDEC for FPT (for Sacramento River), VNS (for San Joaquin River), DTO (for Delta Outflow) - 7 day window loaded daily
    • CFS for FPT+SRWTP, VNS, and NDOI from DWR operations control documents posted to http://www.water.ca.gov/swp/operationscontrol/deltaops.cfm - 30 day PDF window loaded daily
  4. The Cross Channel Status is obtained from the log and change order PDFs located at https://www.usbr.gov/mp/cvo/ - The Cross Channel condition is checked daily via the "Latest Cross Channel Gate Order", and updates are extracted from the PDF log which is published at https://www.usbr.gov/mp/cvo/
  5. On a daily basis, SacPAS calculates the OMR tidally filtered flow and the OMR index based on methods as described in:
    California Department of Water Resources (DWR). 2017. Old and Middle River Flow Review: USGS Gauge Readings versus Index Calculations for 2011 through 2017. Online: http://deltacouncil.ca.gov/docs/old-and-middle-river-flow-review-usgs-gauge-readings-versus-index-calculations-2011-through
    See OMR Tidally Filtered Flow and Index Calculations as performed by SacPAS for full details. SacPAS calculated OMR Index is available for 28 October 2016 to the present.

Citation
Columbia Basin Research, University of Washington. (2020). SacPAS Delta Smelt. Available from http://www.cbr.washington.edu/sacramento/workgroups/delta_smelt.html