State government

• Arizona Department of Environmental Quality
• Arizona Department of Water Resources
• Arizona Game and Fish Department
• Arizona State Land Department
• Arizona State Parks
• Water Resources Research Center, University of Arizona

Federal government

• U.S. Army Corps of Engineers

• U.S. Department of Agriculture
  • Natural Resources Conservation Service
  • Forest Service
• U.S. Department of the Interior
  • Bureau of Land Management
  • Bureau of Reclamation
    • Lower Colorado River Regional Office
  • Environmental Protection Agency
    • American Heritage Rivers
    • Watershed Management
    • Wetlands Program
  • Fish and Wildlife Service
  • Geological Survey