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Technical Workshop
C2VSim - Introduction & Training for the California Central
Valley Groundwater-Surface Water Simulation Model
(in cooperation with the California Department of Water Resources)
Wednesday & Thursday, April 20 and 21, 2016 9:00am to 4:30pm
Irrigation Training and Research Center
California Polytechnic State University, San Luis Obispo
1 Grand Avenue, San Luis Obispo, CA 93407
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DWR’s California Central Valley Groundwater-Surface Water Simulation Model, C2VSim, simulates the monthly response of
the Central Valley’s groundwater and surface water flow system to historical stresses, and can also be used to simulate the
response to projected future stresses. C2VSim contains monthly historical stream inflows, surface water diversions,
precipitation, land use and crop acreages from October 1921 through September 2009. The model dynamically calculates crop
water demands, allocates contributions from precipitation, soil moisture and surface water diversions, and calculates the groundwater pumpage required to meet the remaining demand.
C2VSim is run with DWR’s Integrated Water Flow Model (IWFM) program. Software tools distributed with C2VSim allow users
to import and review water budgets in MS Excel, create movies of groundwater heads and subsidence with TecPlot®, and view
a wide variety of results in ArcMap. C2VSim can also be used in water resources planning, including integrated regional
management planning, climate change assessments, understanding stream-groundwater interactions, and groundwater storage investigations.
The workshop will provide an introduction to the historical evolution of the Central Valley’s water resources system as
encapsulated in C2VSim. The hands-on portion of the workshop will teach users how to run the C2VSim model, analyze simulation results and prepare scenarios.
Workshop participants will need to bring a laptop computer with MS Windows and several programs installed, including ESRI ArcMap, MS Excel, and a programming text editor such as
TextPad or MultiEdit. Before the workshop, participants will need to download and install the C2VSim model, C2VSim ArcMap GUI Tool and C2VSim ArcMap GUI files, available from the DWR C2VSim web site, and the IWFM Tools Add-In for Excel.
Major topics:
- Overview of Central Valley hydrology
- How the Central Valley hydrologic system is represented in C2VSim
- Explanation of the land surface, surface water and groundwater budgets
- Mechanics of running C2VSim (IWFM Preprocessor, Simulation, Budget and Z-Budget programs)
- Input files for C2VSim
- Post-processing C2VSim results
- Using TecPlot® to create a movie of groundwater heads
- Using ArcMap to display results
- Developing case studies for a groundwater pumping project, an aquifer storage and recovery project, and assembling
model output for use in a Groundwater Sustainability Plan
Speaker Slide Presentations:
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