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Technical Workshop
Integrated Water Flow Model (IWFM) Version 2015
Training Workshop
(In cooperation with the California Department of Water Resources)
April 25-27, 2016 from 9:00 to 4:30pm
Bonderson Building Hearing Room 102A
901 P Street, Sacramento,
CA 95814
Entrance at 9th and P Street, check in at security guard desk. Map
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Workshop Fee: $150 for CWEMF members, $250 for non-members, and $40 for students.
Refreshments and lunches not included
Integrated Water Flow Model (IWFM) version 2015 is a water resources management and planning tool that simulates land surface
and root zone flow processes, groundwater, stream flows, and surface water-groundwater interactions. Tile drains, subsidence,
lakes and lake-groundwater interactions can also be simulated. IWFM models groundwater flow as a quasi three-dimensional
system and solves the governing flow equation using the Galerkin finite element method. A unique feature of IWFM is the land use
based approach of calculating water demands. Agricultural and urban water demands can be pre-specified, or calculated internally
based on user-specified land use distribution, soil properties, climatic conditions and farm water management practices.
This is a companion workshop to the IWFM Demand Calculator (IDC) Version 2015 workshop which is offered separately, and
specifically concentrates on the land-surface and root zone component of IWFM. The workshop participants will learn the basic
concepts and mathematical methods used in IWFM, and will have hands-on exercises that will teach them how to build models
from scratch. The software tools that are developed to aid IWFM users in pre- and post-processing model data and simulation results will also be covered.
Workshop participants will need to bring a laptop computer with several programs installed including
MS Excel 2010 or
2013 and a powerful text editor such as TextPad. Before the workshop, participants will need to download workshop materials
(presentations, hands-on examples and guidelines for these examples) and install the IWFM pre- and post-processor tools.
Major topics will include:
- Overview of IWFM-2015
- Simulation of groundwater flow
- Stream flows and stream-groundwater interactions
- Lakes and lake-groundwater interactions
- Tile drains, subsidence, pumping and recharge of groundwater
- Land-use and soil moisture routing; computation of agricultural and urban water demands
(these topics will be covered only briefly; IWFM Demand Calculator (IDC) Version 2015 workshop (March 8-9, 2016) covers these topics in more detail)
- Stream diversions and pumping as water supply
- Automated adjustment of diversions and pumping to meet water demand
- Demonstration of pre- and post-processor tools
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