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About the Group


Interagency Steering Committee on Multimedia Environmental Modeling

This webpage serves to host documents and information pertaining to the Interagency Steering Committee on Multimedia Environmental Modeling (ISCMEM), a U.S. Federal government group chartered through a Memorandum of Understanding (see below) that facilitates cooperation and coordination among participating agencies in research and development (R&D) of multimedia environmental models, software and related databases, including development, enhancements, applications and assessments of site-specific, generic, and process-oriented multimedia environmental models as they pertain to human and environmental health risk assessment.

This webpage seeks to increase the useful exchange of information about environmental modeling tools and techniques within the U.S. Federal, state, and local governments; and encourages collaboration within the environmental modeling community. Our goal is to enhance the development and use of freely shared public domain tools and data related to multimedia environmental modeling.

ISCMEM Fact Sheet:


Participating Agencies:

U.S. Army Corps of Engineers (Engineer Research and Development Center)

U.S. Department of Energy (Office of Environmental Management)

U.S. Department of Interior (U.S. Geological Survey)

U.S. Environmental Protection Agency (Office of Research and Development)

U.S. National Science Foundation (Geosciences Directorate)

U.S. Nuclear Regulatory Commission (Office of Nuclear Regulatory Research)

U.S. Department of Agriculture (Natural Resources Conservation Service)

Several other Federal agencies are reviewing the 2011 revised MOU.

Steering Committee Members


From To Chair Agency
2001 2002 William R. Ott NRC
2002 2003 Gary Foley EPA
2003 2004 Mark S. Dortch USACE
2004 2005 George H. Leavesley USGS
2005 2008 Robert T. Anderson DOE
2008 2009 Ken Rojas USDA
2009 2011 Pierre D. Glynn USGS
2011 2012 William R. Ott NRC
2012 2012 Candida West EPA
2012 2014 Ming Zhu DOE
2014 Present Pat Deliman USACE

Current Events

2013 Annual ISCMEM Public Meeting (Due to the Federal government shutdown caused by a lapse in Congressional appropriations, the previously announced 2013 Interagency Steering Committee Meeting on Multimedia Environmental Modeling (ISCMEM) Annual Public Meeting has been rescheduled for February 25-26, 2014, and will take place at the U.S. Department of Energy Headquarters, Forrestal Building, 1000 Independence Avenue SW, Washington, DC 20585 (next to Smithsonian Metrorail Station). We on the ISCMEM Steering Committee sincerely regret this inconvenience.

Federal Register Notice of the Annual Public Meeting of the Interagency Steering Committee on Multimedia Environmental Modeling

Memorandum of Understanding

Working Groups

1. Software Systems Design and Implementation for Environmental Modeling

This workgroup colloborates in establishing software development standards and infrastructure components for environmental modeling systems.

2. Uncertainty Analysis and Parameter Estimation

This workgroup coordinates ongoing and new research conducted by U.S. Federal agencies that focus on parameter estimation methods and uncertainty assessment strategies and techniques to support environmental models and applications.

3. Subsurface Reactive Solute Transport Modeling

The objective of this workgroup is to compare and contrast approaches used to develop and parameterize conceptual chemical reaction models in reactive solute transport models.

4. Distributed Watershed / Water Quality Modeling

The objectives of this working group are to foster technology transfer in the form of sharing basic knowledge and, where applicable, sharing modules/tools for the betterment of the Distributed Watershed / Water Quality modeling community.

5. Forecasting of Ecosystem Functions and Service

6. Integrated Monitoring and Modeling

Meetings and Workshops