Alabama Rivers Alliance
American Association of Port Authorities (AAPA)
American Canoe Association
American Council of Engineering Companies (ACEC)
American Iron and Steel Institute
American Shore and Beach Preservation Association (ASBPA)
American Society of Civil Engineers (ASCE)
American Society of Landscape Architects (ASLA)
American Soybean Association (ASA)
American Waterways Operators (AWO)
Appalachian Mountain Club
Associated General Contractors of American (AGC)
Association of California Water Agencies (ACWA)
Association of Fish and Wildlife Agencies
Association of National Estuary Programs
California Marine Affairs and Navigation Conference
California Outdoors
California Sportfishing Protection Alliance
Central Valley Flood Protection Board
City Council of the City of Newport, Oregon
Idaho Rivers United
International Union of Operating Engineers (IUOE)
Interstate Council on Water Policy (ICWP)
Iowa Confluence Water Trails
Laborer's International Union of North America (LIUNA)
Los Angeles County Department of Public Works
Metropolitan Washington Council of Governments (COG)
Metropolitan Water District of Southern California
Michigan United Conversation Clubs
Multnomah County Drainage District (MCDD)
National Association of Counties
National Estuarine Research Reserve Association
National Association of Flood & Stormwater Management Agencies (NAFSMA)
National Grain and Feed Association (NGFA)
National Parks Conservation Association (NPCA)
Natural Resources Defense Council
National Water Supply Alliance (NWSA)
Outdoor Alliance
Pacific Northwest Waterways Association (PNWA)
Portland Cement Association (PCA)
Rafting Magazine
Theodore Roosevelt Conservation Partnership (TRCP)
The Transportation Construction Coalition
Trout Unlimited
United Association of Union Plumbers and Pipefitters (UA)
The United States Conference of Mayors
Waterways Council, Inc. (WCI)
Wild Salmon Center