CalSim-II Benchmark Studies Downloads:
Version 1 (May 17th, 2002
As used for SWP Delivery Capability Report
Version 2 (September 30th, 2002)
The California Department of Water Resources (DWR) and the Bureau of Reclamation
Mid-Pacific Region (Reclamation) have jointly released CALSIM II Benchmark
Studies of the State Water Project (SWP) and Central Valley Project (CVP).
CALSIM is a general water resources planning software developed by DWR. CALSIM II,
developed through a collaborative effort by DWR and Reclamation, represents a
comprehensive simulation of the SWP and CVP.
Upon completion of the development of CALSIM II, sample studies were released for
review and comment in September 2001. Technical reviews were conducted and refinements
made to the sample studies. A preliminary version of a benchmark study was released
for review and comment in December 2001. This included a 2001 Level of Hydrology
Benchmark Study (using Contra Costa Water District�s G-model for flow-salinity
relationships in the Delta). Technical reviews have continued and additional refinements
have been made throughout the last year.
The technical reviews and refinements have been conducted by the Benchmark Study
Team (BST) under the direction of the CALFED/DWR/USBR Technical Coordination
Team (TCT), DWR and Reclamation management. The TCT was formed early in 2001 to coordinate
the efforts of various programs in the development of CALSIM II analyses of the water
management options identified in the CALFED Record of Decision. The BST was formed
following the release of the sample studies in September 2001.
This release includes study reports and input datasets for: Version 1 (May 17, 2002)
and Version 2 (September 30, 2002) of the 2001 and 2020 Level of Hydrology Benchmark Studies
(using DWR�s Artificial Neural Network model for flow-salinity relationships in the Delta).
The documentation includes a Benchmark Studies Assumptions document, which presents the
assumptions used in the studies.
The assumptions in the Benchmark Studies and the limitations of the CALSIM II model must
be thoroughly understood before undertaking a CALSIM II analysis. In determining the
suitability of this Benchmark Study for a particular analysis, the user should incorporate
engineering judgment, review the study reports, and consider consulting with the TCT before
proceeding. Technical review and refinement of the benchmark studies will continue. Public
comments, information regarding upcoming public workshops and additional information
requests should be directed to the TCT, DWR or Reclamation planning departments
(contact information follows). A description of planned improvements that are being pursued by the
BST has been included in this release. Four areas to note in the planned
improvements are: 1) CVP/SWP Forecasting and Allocation procedures; 2) CVPIA
3406(b)(2) operations; 3) Environmental Water Account operations; and 4)
Delta flow-salinity relationships.
CalSim-II provides a reasonable planning level simulation of existing project operations,
recognizing that the operating environment and regulatory requirements for the projects are
in a constant state of transition and change. Since CALSIM II is not a detailed operations
model, it does not capture many of the complexities of forecasted and actual operations of
project facilities. In determining the suitability of these studies to a particular analysis,
the user should consult all documentation that accompanies this release and the TCT and BST
For additional information, please contact:
Lloyd Peterson, Mid Pacific Region Bureau of Reclamation at: firstname.lastname@example.org
Sushil Arora, California Department of Water Resources