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Bay-Delta Office
Department of Water Resources

1416 9th Street,
Sacramento, Ca 95814

Mailing Address:
P. O. Box 942836,
Sacramento, Ca 94236-0001

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 CalSim 3 Model
CalSim 3 Model

CalSim 3 is a new and improved water resources planning model, jointly developed by the California Department of Water Resources (DWR) and the Mid-Pacific Region of the U.S. Bureau of Reclamation (Reclamation), to simulate operations of the State Water Project (SWP) and the Central Valley Project (CVP) and much of the water resources infrastructure in the Central Valley of California and the Sacramento-San Joaquin Delta region. It is the next generation of CalSim-II model which has been used in various Central Valley water resources planning studies since its release in 2002.

Major improvements and enhancements in CalSim 3.0 include:

  Finer model spatial resolution
  Better water supply and demand estimation
  Improved groundwater representation and simulation
  Enhanced model validation
  Extended model spatial and temporal domain
  Advanced model engine (WRIMS 2.0)
  Thorough model documentation
  Model supporting tools

CalSim 3 Workshop
Date: January 25 - 26, 2018
Time: 9am - 4pm
Location: Bonderson Building (901 P Street, Sacramento) Hearing Room

This free two-day workshop is a follow up to the CalSim 3.0 model beta release. The morning session on the first day is designed for both water contractors/managers and modelers. More model technical details will be presented during the remaining workshop sessions which are aimed mainly at modelers. No computer is necessary for attending the workshop. The workshop agenda will be emailed to you at a later date before the workshop. Please RSVP to calsim3contact@water.ca.gov if you plan to attend the workshop. Please also indicate in your email if you plan to attend the workshop physically or through the remote access. A link to remotely access the workshop will be emailed to you if you are not able to attend the workshop physically.

We cordially invite you as to be a volunteer model beta tester. It is strongly desirable for beta testers to already have a basic understanding of the water system of the Central Valley and the operations of the State Water Project (SWP) and the Central Valley Project (CVP) as well as prior experience and knowledge of the CalSim-II Model in order to conduct an effective beta testing. We would like to get your feedback on your impressions of the CalSim 3.0 model beta and if the model testing, following the workshop.

A separate CalSim operations training workshop is being planned and will be announced shortly.

Download CalSim 3
Download Calsim 3.0 Model, click here.
Download required software to run CalSim 3.0 (WRIMS 2), click here.
Download Schematic, click here.
A comprehensive documentation of model representation of the Sacramento Valley and Sacramento-San Joaquin Delta water supplies and uses. To read or download click here.
Support Tools
CalSim Hydro
CalSim 3 uses CalSimHydro to estimate valley floor water demand and surface runoff based on land uses in Central Valley. CalSimHydro can be downloaded or used as web application for free.
CalSim 3 stores timeseries data in HEC-DSS files, which can be viewed by HEC-DSSVue
Contact / Questions
If you have any suggestions or questions please email to CalSim3Contact@water.ca.gov
A subject matter expert will get back to you as soon as possible.

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