American Rivers: This organization works to protect National Wild and Scenic Rivers System and prevent large new dams on America’s last wild rivers.

Association of State Wetland Managers (ASWM): This nonprofit organization promotes management of wetland resources while educating members and the public.

Audubon: Audubon aims to conserve and restore natural ecosystems and habitats critical to birds and wildlife, for the benefit of humanity and Earth’s biological diversity.

Audubon – Mississippi River Initiative: Audubon’s field offices, chapters and environmental partners are restoring the Mississippi River ecosystem into a thriving waterway and ecosystem resource.

Center for Watershed Protection: This nonprofit provides governments, activists and watershed organizations with technical tools for protecting US streams, lakes and rivers.

Beacon Institute for Rivers and Estuaries: Beacon’s mission maintains a global center for scientific/technological innovation regarding rivers and estuaries.

Clean Water Action: This grassroots environmental organization protects America’s waters and empowers people to invest in their environmental future.

The Clean Water Network (CWN): CWN includes over 1,200 public interest organizations, representing more than 5 million people. It works to support federal clean water and wetlands policy and the Clean Water Act.

Environment Canada – National Water Research Institute (NWRI): NWRI generates scientific knowledge to sustain Canada’s freshwater resources and ecosystems.

Environmental Defense Fund (EDF): EDF works with businesses, governments and communities on environmental solutions based on rigorous scientific research.

Environmental Protection Agency (EPA): EPA’s mission is to protect human health and the environment.

Fish and Wildlife Service (FWS): This governmental organization works with others to conserve, protect and enhance fish, wildlife, and plants and their habitats.

Inter-American Water Resources Network (IWRN): The IWRN’s network of networks builds and strengthens water-resource partnerships; promotes education and exchange of information and technology; and supports integrated water-resource management.

LightHawk: The largest and oldest environmental aviation organization in North America, LightHawk completes over 700 flights each year for partners, media, researchers, stewards and decision-makers throughout ten countries in North and Central America.

The National Wildlife Federation (NWF): NWF protects clean water through national and regional programs. NWF also ensures the US Army Corps of Engineers protects wildlife, plants and fish when planning, constructing and operating projects.

Natural Resources Defense Council (NRDC): NRDC’s 350 lawyers, scientists and other professionals help protect threatened US waterways.

The Nature Conservancy (TNC): TNC has protected 119 million acres of land and 5,000 miles of rivers, including 600 water sites in 30 countries.

Nature Conservancy of Canada (NCC): This nonprofit partners with corporate and individual landowners to protect natural treasures via property securement.

North American Lake Management Society (NALMS): This Society forges partnerships among citizens, scientists and professionals to foster management and protection of lakes.

Riverkeeper: Riverkeeper works to protect the Hudson River Basin and safeguard New York City’s drinking water supply. It is the model for the Waterkeeper movement.

Trout Unlimited (TU): Trout Unlimited collaborates with other conservation interests, local communities, and state and federal partners to rebuild the resiliency of watersheds.

US Army Corps of Engineers (USACE): This water management agency is responsible for investigating, developing and maintaining US water resources.

Waterkeeper Alliance: This movement supports advocates in over 100,000 miles of global rivers, streams and coastlines threatened by polluters and government agencies.

Yellowstone to Yukon (Y2Y): Combining science and stewardship, Y2Y seeks to ensure that the wilderness, wildlife, native plants and natural processes of the Yellowstone to Yukon region continue to function as an interconnected web of life, supporting its natural and human communities, for now and for future generations.