Portland-Vancouver Watershed Councils and Friends
Johnson Creek Watershed Council
Albert Kelly Park Creek Restoration
Friends of Tryon Creek State Park
Tryon Creek Watershed Council
Friends of Arnold Creek
Columbia Slough Watershed Council
Fans of Fanno Creek
Rock Creek Partners
Crestwood Headwaters Group
Tualatin Riverkeepers
Bridlemile Creek Stewards
Tualatin Watershed Council
Willamette Riverkeeper
Vancouer Audubon Society
Friends of Forest Park
Friends of Clark County
Friends of Smith and Bybee Lakes
Audubon Society of Portland's Urban Conservation Program
North Portland Greenway (npGreenway.org)
Friends of Tualatin River Wildlife Refuge
Friends of Powell Butte Nature Park
Environmental Justice Action Group
Clackamas Basin River Watershed Council
Rain Drops to Refuge (Sherwood)