WestFAST currently consists of 11 federal agencies, with a liaison representing those agencies to the WSWC. The following agencies are currently part of the WestFAST team:

• U.S. Department of Agriculture
• U.S. Forest Service
• Natural Resource Conservation Service
• U.S. Department of Commerce
• National Oceanic and Atmospheric Administration
• U.S. Department of Defense
• U.S. Army Corps of Engineers
• U.S. Department of Energy
• U.S. Department of the Interior
• U.S. Bureau of Land Management
• U.S. Bureau of Reclamation
• U.S. Fish and Wildlife Service
• U.S. Geological Survey
• U.S. Environmental Protection Agency
• National Aeronautics and Space Administration