Tualatin Riverkeepers Promotes watershed stewardship through public education, public access, citizen involvement and advocacy.
Waterkeeper Alliance Advocacy organization dedicated to preserving and protecting water from polluters. Has local groups throughout the United States and Canada.
Watershed Projects Inventory (WPI) An integration of project data compiled as part of the California Watershed Project Inventory (CWPI) plus project data gathered as part of the more comprehensive Natural Resource Project Inventory.
Wildland Hydrology Consultants Goal is to offer a series of training courses designed to provide "hands-on" experience for those individuals working with rivers and their watersheds.
Willamette Riverkeeper Working to make the watershed healthy for fish and wildlife, and safe for fishing and swimming.