- Academy of Coastal, Ocean, Port & Navigation Engineers (ACOPNE)
- Academy of Geo-Professionals (AGP)
- American Academy of Environmental Engineers (AAEE)
- American Council of Engineering Companies (ACEC)
- American Geophysical Union (AGU)
- American Society of Agricultural & Biological Engineers (ASABE)
- American Shore and Beach Preservation Association (ASBPA)
- American Society of Civil Engineers (ASCE)
- American Public Works Association (APWA)
- American Water Resources Association (AWRA)
- Australian Water Association (AWA)
- American Water Works Association (AWWA)
- Association of California Water Agencies (ACWA)
- Association of Ground Water Scientists and Engineers (AGWSE)
- Association of State Dam Safety Officials (ASDSO)
- Association of State Floodplain Managers (ASFPM)
- Atlantic Intracoastal Waterway Association (AIWA)
- Canadian Dam Association (CDA)
- Canadian Society for Civil Engineering (CSCE)
- Colorado River Water Users Association (CRWUA)
- County of Orange (CA) Public Works
- Environmental & Water Resources Institute (EWRI)
- Harris County Flood Control District (HCFCD)
- International Association of Hydraulic Engineering & Research (IHAR)
- International Commission on Large Dams (ICOLD)
- International Hydropower Association (IHA)
- International Water Association (IWA)
- Interstate Council on Water Policy (ICWP)
- National Academy of Engineering (NAE)
- National Academy of Sciences (NAS)
- National Association of Clean Water Agencies (NACWA)
- National Association of Flood and Stormwater Management Agencies (NAFSMA)
- National Ground Water Association (NGWA)
- National Institutes for Water Resources (NIWR)
- National Water Research Institute (NWRI)
- National Water Resource Association (NWRA)
- Orange County Water District (OCWD)
- Oregon Water Resources Congress (OWRC)
- Society of American Military Engineers (SAME)
- South Florida Water Management District (SFWMD)
- Stockholm International Water Institute (SIWI)
- Swedish Society of Civil and Structural Engineers (SVR)
- Universities Council on Water Resources (UCOWR)
- USDA - Agricultural Research Service (USDA-ARS)
- U.S. Army Corps of Engineers (USACE)
- U.S. Army Engineer Institute for Water Resources (IWR)
- U.S. Bureau of Reclamation
- U.S. Geological Survey (USGS)
- U.S. Society on Dams (USSD)
- U.S. Society for Irrigation and Drainage Professionals (USCID)
- Water Environment Federation (WEF)
- Water Resources Coalition
- Waterkeeper Alliance