CALIFORNIA WATER AND ENVIRONMENTAL MODELING FORUM

  • Facilitating an open exchange of information on California water issues
  • Resolving technical disagreements in a non-adversarial setting
  • Ensuring that technical work continues to take into account the needs of stakeholders and decision makers

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2025 CWEMF Annual Meeting

The California Water and Environmental Modeling Forum will hold its 31st Annual Meeting from Monday, May 12. 2025 through Wednesday, May 14, 2025 at the Lake Natoma Inn (Venue) in Folsom, California.

Program

Highlights of the 2025 CWEMF Annual Meeting include:

  • Click here to view/download the draft meeting program. Three concurrent sessions will be held.
  • The annual Awards Ceremony will be held immediately following lunch on Monday May 12.
  • The keynote address will be given immediately following lunch on Tuesday May 13. This year’s keynote speaker will be Dr. Peter Goodwin, University of Maryland.
  • A business meeting will be held the evening of Monday May 12 with location TBD.
  • A poster session will be held on Tuesday May 13.  The posters will be displayed throughout the afternoon and evening. Beverages and a light dinner will be provided at the end of the day to allow attendees to chat with the poster presenters.  The instructions for the poster session are posted here.
  • Boxed lunches will be provided on Monday May 12 and Tuesday May 13 if you register by Friday April 18.

Registration

To register for the CWEMF 2025 Annual Meeting, please complete the Registration Form. (Click here to download the form.) Payment can be made through PayPal (buttons below) or by mailing a check to the CWEMF address on the registration form. Early bird rates apply through April 18, 2025. Discounted rates are available to those in the following individual membership categories: “Non-Profit/NGO”, “Academic Postdoc”, “Senior” and “Student”. All session moderators and speakers are required to register for the meeting.

Please note: If you register online for the 1-Day option, please send an email with the subject “CWEMF 1-Day Option” to CWEMF’s Executive Director, Paul Hutton at paul.hutton@tetratech.com. In this email, please indicate which day you plan to attend (i.e., Monday, Tuesday, or Wednesday). This information is necessary for our refreshment, lunch and social planning. Thank you!

Employees of the following organizations are considered “Organization” members and should register accordingly:

  • California Department of Water Resources
  • California State Water Resources Control Board (does not include Regional Water Boards)
  • Contra Costa Water District
  • Delta Stewardship Council
  • East Bay Municipal Utility District
  • Geosyntec Consultants
  • ICF
  • Intera
  • Jacobs
  • Metropolitan Water District of Southern California
  • Resource Management Associates / GEI Consultants
  • S.S. Papadopulos & Associates, Inc.
  • Stantec
  • U.S. Bureau of Reclamation
  • U.S. Geological Survey
  • West Yost Associates
  • Woodard & Curran

Lodging

We have reserved a block of rooms at the Lake Natoma Inn for $145 per night.  If you wish to stay at the Lake Natoma Inn, please make your reservations with the Hotel by clicking here. Please make your reservations at least two weeks in advance because the CWEMF block of rooms will be released to others on April 28.

Professional Development Hours

Your attendance at the 31st Annual Meeting will entitle you to earn up to 24 Professional Development Hour (PDH) units, which many licensure and certification agencies require to demonstrate continuing professional competency. In general, one PDH is equal to one full hour of attendance. Reporting is done on an honor basis where attendees maintain their own records and email to CWEMF the number of hours in attendance.

Getting to Folsom

There is plenty of parking at the Lake Natoma Inn and nearby parking garage; however, if you would like to take light rail, the Historic Folsom Light Rail station is just a five minute walk from the Lake Natoma Inn.

If you have any questions, please contact the CWEMF Executive Director, Paul Hutton, at paul.hutton@tetratech.com or (916) 281-5842.

Pay Registration fee Online

Early Bird Registration, 2025 Annual Meeting Fees + Membership
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Early Bird CWEMF 2025 Annual Meeting Fees for Paid Membership
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CWEMF 2025 Annual Meeting Fees + Membership – After 04/18/2025
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CWEMF 2025 Annual Meeting Fees for Paid Membership-after 4/18/2025
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CWEMF 2025 Annual Meeting Organization Member Registration
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IWFM Demand Calculator (IDC) Training

Technical workshop (in cooperation with the California Department of Water Resources)
April 9 – 10, 2025, 8:30am to 4:30pm
California Natural Resources Headquarters
715 P Street, Room 2-302
Sacramento, CA 95814

Workshop announcement flyer

This workshop is open to CWEMF members only.
Workshop Fee: $100 for CWEMF members and $25 for students
Refreshments included both days, lunch not included.

Payment can be made online below via PayPal. 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 “IDC Workshop” in the subject line. Go to “Become a Member” page for information on renewing your CWEMF membership or becoming a CWEMF member.


IWFM Demand Calculator (IDC) is the stand-alone root zone simulation component of DWR’s Integrated Water Flow Model (IWFM). It calculates agricultural, managed wetland, and urban water demands at river-basin scale under user-specified climate, soil, farm-water management and land-use characteristics. It also routes precipitation and irrigation water through the root zone, and simulates land-surface and root zone flow processes. Participants planning to attend the next IWFM workshop are encouraged to attend the IDC workshop since the root zone module of IWFM will be covered in much more detail in this workshop.

The workshop participants will learn the basic concepts and mathematical methods used in IDC, and will have hands-on exercises that will teach them how to build models from scratch. The software tools that are developed to aid IDC users in pre- and post-processing model data and simulation results will also be discussed.

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 IDC pre- and post-processor tools. Instructions will be provided.

Major topics will include:

  • Overview of IDC
  • Land-use and soil moisture routing
  • Simulation of water demand for “non-ponded” crops
  • Simulation of water demand for “ponded” crops (i.e. rice and managed wetlands)
  • Simulation of urban water demands
  • Mixing dynamic demand computation with user-specified demands
  • Simulation of root water uptake from groundwater
  • Simulation of deficit irrigation
  • Demonstration of pre-processing and post-processor tools

Course Principal Instructor: Can Dogrul, Ph.D., PE, Senior Engineer WR, California Department of Water Resources

Pay IDC workshop fee online

IWFM Demand Calculator (IDC) Training 2025
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CWEMF ORGANIZATION MEMBERS

Ca Department of Water Resources
Ca State Water Resources Control Board
Contra Costa Water District
Delta Stewardship Council
East Bay Municipal Utility District
ICF
Intera
Jacobs ch2m
Metropolitan Water District of Southern California
Resource Management Associates
spa.com
S.S. Papadopulos & Associates, Inc.
Stantec
Stantec
U.S. Geological Survey
U.S. Bureau of Reclamation
Woodard & Curran

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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