Data Compilations - Plots, Commentary and Links

Vernalis Station
Vernalis
Hood Station
Hood
Banks Station
Banks
Hood Station
Gianelli
Jones PP
Jones

This site is supported by the State Water Contractors. It is based primarily on data from the California Department of Water Resources (DWR) Municipal Water Quality Investigations (MWQI) as part of the Real Time Data and Forecasting (RTDF) project. Its goal is to bring real time, near real time, and forecasted water quality data to source water managers, treatment plant operators, scientists, and other stakeholders. Data from numerous sources are assembled and presented with the goal of providing a concise, single source of relevant information. Data are presented in tables and graphs in combinations that are specific to particular concerns.

RTDF field data is the primary source of data and originates from 46 real-time field sensors at 5 MWQI stations measuring key water quality constituents, with organic carbon and bromide the primary focus. Of the 46 sensors, 31 are operated by MWQI and the other 15 by DWR's Division of Operations and Maintenance, DWR's Environmental Water Quality and Estuarine Studies Branch, the US Geological Survey, and the San Luis Delta Mendota Water Authority. Information provided by the the real-time stations is supplemented with other, selected water quality and hydrology data reported to CDEC by other agencies with links provided to specific websites that contain pertinent information.

Operations data, available on the daily dispatcher's report from DWR operations, provide daily pumping and generation flows and daily storage for selected projects. Electroconductivity (EC) forecasts at key delta export locations are provided by DWR's operations modeling group and include observed values for comparison; observed values are provided through CDEC. Daily EC, bromide and dissolved organic carbon (DOC) forecasts are also provided by DWR's operations modeling group for stations along the California Aqueduct and its principal branches.

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Summary Table (updated daily)

Mean daily values and seven day averages. Values less than the instrument reporting limit are annotated as (<RL). All Data are preliminary.

11/29/2021 12/5/2021 % Change 7-day Average
Sacramento River (Hood)
Mean Daily Flow, cfs 7,730 8,077 +4 ⇑ 8,398
Salinity (EC), µS/cm 212 200 -6 ⇓ 208
DOC, mg/L m 2.01 --- 2.10
TOC, mg/L m 2.07 --- 2.18
 
San Joaquin River (Vernalis)
Mean Daily Flow, cfs 596 548 -8 ⇓ 565
Salinity (EC), µS/cm 651 602 -8 ⇓ 618
DOC, mg/L 2.43 m --- 2.39
TOC, mg/L 2.41 m --- 2.33
Bromide, mg/L m m --- 0.19
 
H.O. Banks Pumping Plant (SWP)
Mean Daily Pumping, cfs 521 291 -44 ⇓ 337
Salinity (EC), µS/cm 497 507 +2 ⇑ 503
DOC, mg/L 4.52 4.81 +6 ⇑ 4.76
TOC, mg/L 4.69 5.04 +8 ⇑ 4.92
Bromide, mg/L 0.31 0.30 -3 ⇓ 0.31
 
C.W. Jones Pumping Plant (DMC)
Mean Daily Pumping, cfs 1,734 922 -47 ⇓ 1,322
Old River Flow, cfs 1,201 1,442 +20 ⇑ 1,354
Salinity (EC), µS/cm 565 605 +7 ⇑ 571
DOC, mg/L m 3.88 --- 4.05
TOC, mg/L m 3.95 --- 4.06
Bromide, mg/L m m --- 0.33
Dissolved Oxygen, mg/L 8.82 8.86 <1 8.82
Turbidity, NTU 3.38 2.34 -31 ⇓ 2.91
Chloride, mg/L m m --- 85
Nitrate, mg/L m m --- 3.88
Sulfate, mg/L m m --- 38
pH 7.27 7.27 <1 7.26
Temp, C 14 13 -2 ⇓ 14
 
Gianelli Pumping Plant (SWP)
Mean Daily Pumping, cfs 484 m --- 486
Mean Daily Generation, cfs 0.00 m --- 0.00
Salinity (EC), µS/cm 534 566 +6 ⇑ 550
DOC, mg/L 4.21 m --- 4.15
TOC, mg/L 4.42 m --- 4.39
Bromide, mg/L 0.22 0.23 +3 ⇑ 0.22
Dissolved Oxygen, mg/L 11 9 -17 ⇓ 10
Turbidity, NTU 2.67 1.56 -42 ⇓ 2.19
Nitrate, mg/L 2.92 0.12 (<RL) -96 ⇓ 2.02
Chloride, mg/L 76 77 +2 ⇑ 76
Sulfate, mg/L 29 31 +7 ⇑ 30
pH 7.69 7.41 -4 ⇓ 7.61
Temp, C 15 15 <1 15
 
Barker Slough Pumping Plant
Mean Daily Pumping, cfs 43 44 +4 ⇑ 49
Salinity (EC), µS/cm m 281 --- 286
Turbidity, NTU 12 16 +27 ⇑ 15
 
Victoria Canal Near Byron
Salinity (EC), µS/cm 449 460 +2 ⇑ 454
 
California Aqueduct TDS (est. from EC)
Banks, mg/L m m --- ---
Check 41, mg/L 305 312 +2 ⇑ 301
Check 66, mg/L 264 261 -1 ⇓ 264
 
Delta Total Outflow
Outflow, cfs 3,049 3,265 +7 ⇑ 2,984
 
Devils Canyon Afterbay
Salinity (EC), ┬ÁS/cm m m --- ---
Turbidity, NTU m m --- ---
 

Acknowledgements

Data for this report has been provided by: 

California Department of Water Resources
Bay-Delta Office

Division of Environmental Services
Office of Water Quality 

Division of Flood Management

California Data Exchange Center 

Division of Operations and Maintenance

Field Divisions
Water Management Branch
Water Quality Section

Contra Costa Water District 

United States Department of the Interior

Bureau of Reclamation
U.S. Geological Survey

National Oceanic and Atmospheric Administration

California Nevada River Forecast Center

University of Nebraska at Lincoln

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