The California Water and Environmental Modeling Forum held its 31st Annual Meeting from Monday, May 12. 2025 through Wednesday, May 14, 2025 at the Lake Natoma Inn (Venue) in Folsom, California, successfully. Thank you for all participants!
Please check out our post annual meeting survey if you have attended the meeting. The survey will conclude on Friday, May 23, 2025.
Highlights of the 2025 CWEMF Annual Meeting include:
This workshop is open to CWEMF members only.
Workshop Fee: $150 ($40 for student)
Refreshments included all three days, lunch not included.
Registration/Payment can be made online below. Payment can also be made via check sent to: CWEMF, P.O. Box 5051, Vacaville, CA 95696-5051. As part of the registration process, please email cwemf@cwemf.org to reserve your seat and include “IWFM Workshop” in the subject line. Go to www.cwemf.org for information on renewing your CWEMF membership or becoming a CWEMF member.
Integrated Water Flow Model (IWFM) 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 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) 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.
Workshop participants will need to bring a laptop computer with several programs installed, including MS Excel, 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 Excel add-in.
Major topics will include:
Course Instructor: Dr. Can Dogrul, Ph.D. P.E. (Department of Water Resources)
This workshop is open to CWEMF members only.
Workshop Fee: $300 ($50 for student)
Refreshments included all three days, lunch not included.
Registration/Payment can be made online below. Payment can also be made via check sent to: CWEMF, P.O. Box 5051, Vacaville, CA 95696-5051. As part of the registration process, please email cwemf@cwemf.org to reserve your seat and include “CE-QUAL-W2 Workshop” in the subject line. Go to www.cwemf.org for information on renewing your CWEMF membership or becoming a CWEMF member.
CE-QUAL-W2 (W2) is a two-dimensional, laterally averaged hydrodynamic and water quality model with over 30 years of development. It simulates hydrodynamics, water temperature, and various water quality constituents in water bodies. The W2 model is capable of simulating a broad range of constituents, including inorganic solids, bacteria, dissolved gases, metals (Fe, Mn) mercury (Hg), nutrient cycles, and processes contributing to eutrophication. Users can define any number of groups like generic constituents, suspended solids, BOD, algae, epiphyton, macrophytes, and zooplankton. W2 also includes zero-order and first-order bed sediment processes, as well as sediment diagenesis model to quantify sediment oxygen demand (SOD) and nutrient fluxes across sediment-water interfaces. The W2 model provides detailed outputs for velocities, water temperature and all constituents across longitudinal, vertical, and temporal dimensions. This model has been successfully applied in California, across the U.S., and internationally in rivers, lakes, and reservoirs. Its applications include assessing impacts of stressors, conducting thermal and water quality studies, updating reservoir operation manuals, and
developing environmental impact statements.
This workshop will provide an overview of CE-QUAL-W2 V5’s features and highlight major enhancements. The workshop will cover the model input requirements, model development, calibration, and result analysis through lectures and hands-on exercises. By the end of the workshop, attendees will know how to set up and run W2 hydrodynamic and water quality simulations, visualize results, and perform alternative scenario analyses.
Workshop materials will be provided in advance. Participants should bring a laptop pre-loaded with CE-QUAL-W2, a text editor (e.g., TextPad or Notepad++), Microsoft Excel, and permission to run Excel macros.
Lead Instructor: Zhonglong Zhang, PhD, PE, PH, Research Professor, Portland State University
CALIFORNIA WATER & ENVIRONMENTAL MODELING FORUM
P.O. Box 5051, Vacaville, CA 95696-5051
(916) 850-3110 https://cwemf@cwemf.org
CWEMF is a 501(c)(3) charitable trust
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