SacPAS: Central Valley Prediction & Assessment of Salmon

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Delta Smelt


Generated: 23 Jan 2021 09:20:01 PST. 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 || Chipps Island Trawl Detail|| 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 All2021-01-202021-01-2132021-01-22Twice daily check, automated processing
EDSMLongfin Smelt -- Eggs2021-01-202021-01-2012021-01-22Twice daily check, automated processing
EDSMLongfin Smelt -- No Expression2021-01-212021-01-2122021-01-22Twice 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
Chipps Island TrawlLongfin Smelt2020-11-252021-01-05102021-01-15Weekly Email File, automated processing
EDSMDelta Smelt All2020-11-092021-01-0622021-01-22Twice daily check, automated processing
EDSMDelta Smelt -- No Expression2020-11-092021-01-0622021-01-22Twice daily check, automated processing
EDSMLongfin Smelt All2020-10-142021-01-21402021-01-22Twice daily check, automated processing
EDSMLongfin Smelt -- Eggs2021-01-202021-01-2012021-01-22Twice daily check, automated processing
EDSMLongfin Smelt -- No Expression2020-10-152021-01-21362021-01-22Twice 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: 2021-01-21

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: 2021-01-21

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

USFWS Chipps Island Trawl WY 2021 (10/01/2020 - 09/30/2021)

Daily Delta Smelt and Longfin Smelt caught in Chipps Island Trawl USFWS Lodi juvenile monitoring WY2021
DateSpeciesnfishFork LengthStation CodeSample TimeMark Code
2020-11-25Longfin Smelt1108SB018M09:33:00None
2020-12-08Longfin Smelt174SB018M10:21:00None
2020-12-08Longfin Smelt1107SB018M10:21:00None
2020-12-08Longfin Smelt1114SB018S10:47:00None
2020-12-09Longfin Smelt169SB018M10:29:00None
2020-12-09Longfin Smelt1105SB018N10:55:00None
2020-12-09Longfin Smelt168SB018N11:20:00None
2020-12-27Longfin Smelt1114SB018M08:37:00None
2021-01-04Longfin Smelt1107SB018M07:41:00None
2021-01-05Longfin Smelt1111SB018M08:07:00None

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

Delta Smelt and Longfin Smelt caught in Enhanced Delta Smelt Monitoring (EDSM)
DateSpeciesnfishFork Length RangeExpressionSubregionStratumRegionMethod
2020-11-09Delta Smelt157-57XSuisun MarshSuisun MarshWestKodiak
2021-01-06Delta Smelt151-51XUpper Sac River Shipping ChannelSac Deep Water Ship ChannelNorthKodiak
2020-10-14Longfin Smelt162-62Grizzly BaySuisun MarshWestKodiak
2020-10-15Longfin Smelt1101-101XWest Suisun BaySuisun BayFar WestKodiak
2020-11-17Longfin Smelt367-83XSuisun MarshSuisun MarshWestKodiak
2020-11-24Longfin Smelt161-61Grizzly BaySuisun MarshWestKodiak
2020-11-27Longfin Smelt154-54Grizzly BaySuisun MarshWestKodiak
2020-11-27Longfin Smelt178-78XSuisun MarshSuisun MarshWestKodiak
2020-11-30Longfin Smelt166-66XSuisun MarshSuisun MarshWestKodiak
2020-12-17Longfin Smelt572-106XGrizzly BaySuisun MarshWestKodiak
2020-12-24Longfin Smelt174-74XMid Suisun BaySuisun BayWestKodiak
2020-12-28Longfin Smelt1665-115XSuisun MarshSuisun MarshWestKodiak
2021-01-04Longfin Smelt459-82XSuisun MarshSuisun MarshWestKodiak
2021-01-04Longfin Smelt170-70XSuisun MarshSuisun MarshWestKodiak
2021-01-04Longfin Smelt171-71XSuisun MarshSuisun MarshWestKodiak
2021-01-20Longfin Smelt171-71ELower Sac River Ship ChannelSac Deep Water Ship ChannelNorthKodiak
2021-01-21Longfin Smelt277-88XSuisun MarshSuisun MarshWestKodiak

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)
2021-01-099.959.6810.4510.039151.825.812.662.991.631.62-1665533939.1%9.80-3170-269044103584.00826.008905.791003.757.667.5759.00
2021-01-109.899.7110.189.938858.145.802.743.152.111.90-1191546938.6%9.65-3300-266039233095.00828.008449.961015.087.447.3664.00
2021-01-119.869.7510.089.908567.965.862.703.082.082.03-1199514036.8%829.65-3340-264034162585.00831.008348.13943.807.377.3262.00
2021-01-129.919.7910.229.978367.116.332.813.091.703.826627431.2%829.68-3110-260027911956.00835.008303.25898.887.537.4662.00
2021-01-1310.029.9110.6610.208381.193.122.901.962.29-17622627.5%829.93-2740-259021181286.00832.008492.21879.728.107.5060.00
2021-01-1410.2010.0611.6610.648446.972.812.741.702.04-33635423.3%8210.38-2380-258023141482.00832.008545.46866.009.557.4968.00
2021-01-1510.3010.1311.9710.808381.642.662.672.062.02-1643523.2%8210.53-2150-258023331498.00835.008107.25852.2010.437.1061.00
2021-01-1610.4610.2212.0810.928245.515.362.972.601.541.93-79596023.5%10.84-1930-257021721338.00834.008083.83840.8010.747.1267.00
2021-01-1710.6410.3312.5311.178231.785.242.802.451.581.79-53597723.9%11.15-1930-257023351501.00834.008504.25848.2011.007.0465.00
2021-01-1810.7210.4812.7011.308461.174.973.798.681.351.75-2635924.0%11.28-1930-253021441315.00829.008795.42858.8011.1810.2163.00
2021-01-1910.3510.4211.5310.778633.314.844.5428.721.592.5568663023.5%8210.93-1930-250023121482.00830.008600.25876.4410.2515.4564.00
2021-01-2010.2510.2910.7810.448381.034.783.2322.311.584.91-791549626.0%8210.60-2070-248035511904.001647.007747.42871.609.8413.0662.00
2021-01-2110.2810.3410.8210.488050.194.753.1113.591.715.90-918458729.7%8210.40-2220-246029251267.001658.007802.92852.6070.00
2021-01-2210.2310.4010.8010.487604.884.552.859.561.634.758210.2631471490.001657.007264.29844.20
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)
2021-01-16012000.006690.00
2021-01-16111600.003670.00
2021-01-1627780.002970.00
2021-01-1634230.004390.00
2021-01-164-5540.002100.00
2021-01-165-10400.00-3770.00
2021-01-166-11800.00-5390.00
2021-01-167-12300.00-6320.00
2021-01-168-12000.00-6550.00
2021-01-169-9010.00-6070.00
2021-01-16101160.00-4120.00
2021-01-16117110.00654.00
2021-01-16129100.004410.00
2021-01-16138660.002840.00
2021-01-1614227.00-479.00
2021-01-1615-11600.00-1450.00
2021-01-1616-13300.00-4400.00
2021-01-1617-13200.00-6280.00
2021-01-1618-13100.00-7200.00
2021-01-1619-9980.00-7170.00
2021-01-1620-1170.00-5560.00
2021-01-16217490.00-348.00
2021-01-162210200.004880.00
2021-01-162312000.006390.00
2021-01-17011600.006850.00
2021-01-17111000.004910.00
2021-01-1729140.002920.00
2021-01-1736390.003890.00
2021-01-174-2860.004140.00
2021-01-175-11300.00-909.00
2021-01-176-11300.00-5080.00
2021-01-177-13000.00-6900.00
2021-01-178-13500.00-7600.00
2021-01-179-11500.00-7000.00
2021-01-1710-6330.00-6010.00
2021-01-17112890.00-2710.00
2021-01-17128390.002290.00
2021-01-17138550.005060.00
2021-01-17148300.003480.00
2021-01-1715-7.002360.00
2021-01-1716-8050.00484.00
2021-01-1717-11300.00-4140.00
2021-01-1718-12100.00-6060.00
2021-01-1719-11100.00-6800.00
2021-01-1720-7360.00-6430.00
2021-01-17211240.00-4280.00
2021-01-17228070.001170.00
2021-01-172310700.005290.00
2021-01-18011800.006220.00
2021-01-18110700.002710.00
2021-01-1827700.001290.00
2021-01-1836990.003590.00
2021-01-1844030.004550.00
2021-01-185-5650.001640.00
2021-01-186-11100.00-4260.00
2021-01-187-11500.00-6200.00
2021-01-188-13100.00-9130.00
2021-01-189-15000.00-8470.00
2021-01-1810-13100.00-8230.00
2021-01-1811-5330.00-6730.00
2021-01-18123670.00-2640.00
2021-01-18138630.002680.00
2021-01-18148960.004630.00
2021-01-18158980.005100.00
2021-01-18166090.004720.00
2021-01-1817-1840.003040.00
2021-01-1818-8360.00-1660.00
2021-01-1819-11100.00-5240.00
2021-01-1820-10200.00-6230.00
2021-01-1821-6990.00-5940.00
2021-01-18221660.00-3320.00
2021-01-18239820.001850.00
2021-01-1909230.004930.00
2021-01-19110300.003750.00
2021-01-1928100.001150.00
2021-01-1935180.002640.00
2021-01-1944920.004040.00
2021-01-195-1190.003990.00
2021-01-196-10400.00-377.00
2021-01-197-13800.00-4330.00
2021-01-198-12500.00-5680.00
2021-01-199-12400.00-7470.00
2021-01-1910-12100.00-7770.00
2021-01-1911-10500.00-6700.00
2021-01-1912-2800.00-3600.00
2021-01-19135290.001620.00
2021-01-19147600.004480.00
2021-01-19159200.005560.00
2021-01-19169620.005820.00
2021-01-19177570.005430.00
2021-01-1918180.003710.00
2021-01-1919-7220.00-627.00
2021-01-1920-9020.00-4480.00
2021-01-1921-9240.00-5170.00
2021-01-1922-6410.00-5270.00
2021-01-1923-231.00-3560.00
2021-01-2006420.00590.00
2021-01-2018040.001980.00
2021-01-2026570.00129.00
2021-01-2036160.002240.00
2021-01-2045640.003420.00
2021-01-205440.002830.00
2021-01-206-9100.00-1180.00
2021-01-207-12700.00-5080.00
2021-01-208-13300.00-6500.00
2021-01-209-14100.00-8190.00
2021-01-2010-13800.00-9320.00
2021-01-2011-12100.00-8040.00
2021-01-2012-5010.00-6710.00
2021-01-20134420.00-2900.00
2021-01-20147890.0070.00
2021-01-20158940.004670.00
2021-01-201610400.005720.00
2021-01-20179200.005520.00
2021-01-20187880.004930.00
2021-01-20192430.003680.00
2021-01-2020-5250.00-277.00
2021-01-2021-8770.00-3930.00
2021-01-2022-9260.00-5080.00
2021-01-2023-6530.00-5390.00
2021-01-210-2000.00-4110.00
2021-01-2113670.00-1050.00
2021-01-2127190.002570.00
2021-01-2137750.004120.00
2021-01-2148210.004310.00
2021-01-2155050.003720.00
2021-01-216-4290.00-952.00
2021-01-217-12300.00-6550.00
2021-01-218-14100.00-8890.00
2021-01-219-16200.00-10400.00
2021-01-2110-16200.00-11000.00
2021-01-2111-14600.00-9760.00
2021-01-2112-10100.00-8380.00
2021-01-2113-1520.00-6310.00
2021-01-21146620.00-1120.00
2021-01-21159690.003690.00
2021-01-211611300.005470.00
2021-01-211710800.005910.00
2021-01-211810300.005820.00
2021-01-21198930.005330.00
2021-01-21205320.004510.00
2021-01-2121-3440.001920.00
2021-01-2122-8410.00-3050.00
2021-01-2123-8700.00-5050.00
2021-01-220-9030.00-5650.00
2021-01-221-6950.00-5580.00
2021-01-222-965.00-3970.00
2021-01-2235290.00-856.00
2021-01-2247620.002320.00
2021-01-2255920.003710.00
2021-01-2263430.00869.00
2021-01-227-9360.00-5800.00
2021-01-228-12900.00-8480.00
2021-01-229-12900.00-9450.00
2021-01-2210-13100.00-8830.00
2021-01-2211-13000.00-8590.00
2021-01-2212-11300.00-8170.00
2021-01-2213-5460.00-6970.00
2021-01-22143850.00-3810.00
2021-01-22159050.001600.00
2021-01-221611000.005330.00
2021-01-221712200.006370.00
2021-01-221811500.006520.00
2021-01-221911100.006240.00
2021-01-22209730.005870.00
2021-01-22217830.005360.00
2021-01-2222-668.003750.00
2021-01-2223-9410.00-1190.00

Data Set Notes:


Citation
Columbia Basin Research, University of Washington. (2021). SacPAS Delta Smelt. Available from http://www.cbr.washington.edu/sacramento/workgroups/delta_smelt.html