Member Directory
Join the 1,010 organizations working to protect and restore rivers and drinking water.
Members by Region
Pacific Northwest / Columbia Basin
- Bark
- Capitol Land Trust
- Clackamas River Basin Council
- Columbia Land Trust
- Columbia Slough Watershed Council
- Community Action Partnership Association of Idaho
- Curry Watersheds Partnership
- Deschutes Estuary Restoration Team
- Duwamish River Cleanup Coalition
- Duwamish River Community Coalition
- EPA Region 10 (Pacific Northwest)
- Friends of Wagner Creek
- Georgia Strait Alliance
- Greater Gig Harbor Foundation
- Greenbelt Land Trust
- Idaho Rivers United
- Idaho Wildlife Federation
- Illinois Valley Soil and Water Conservation District
- Illinois Valley Watershed Council
- King Conservation District
- King County Water and Land Resources Division (WA)
- Kitsap County Stream Team
- Klamath-Siskiyou Wildlands Center
- Lacamas Watershed Council
- Living Cully
- Long Tom Watershed Council
- Luckiamute Watershed Council
- Native Fish Society
- Network Of Oregon Watershed Councils
- Northwest Environmental Defense Center
- Okanogan Land Trust
- Oswego Lake Watershed Council
- Palouse-Clearwater Environmental Institute
- Partnership for the Umpqua Rivers
- Portland Community College
- Puget Soundkeeper Alliance
- Rapid River Assessment
- Rogue Valley Council of Governments
- Salmon Valley Stewardship
- Sandy River Watershed Council
- South Coast Watersheds Council
- Streamkeepers of Clallam County
- Street Sounds Ecology
- Teton Regional Land Trust
- The Lands Council
- The Nature Conservancy in Washington
- The River Mile Network
- Underwood Conservation District
- Upper Deschutes Watershed Council
- Verde
- Washington Council of Trout Unlimited
- Water Policy Pathways
- Wild & Scenic Law Center
- Wild Gift
- Wood River Land Trust
California
- California Association of Resource Conservation Districts
- California Trout
- California Wilderness Coalition (CalWild)
- Central Valley Opportunity Center
- City of Santa Barbara
- Coastal Quest
- Coastal Watershed Council
- Creeklands
- Environmental Protection Information Center (EPIC)
- Friends of Auburn Ravine
- Friends of Sausal Creek
- Friends of the Desert Mountains
- Friends of the Eel River
- Friends of the Inyo
- Friends of the Petaluma River
- Friends of the River
- Grades of Green
- Grassroots Ecology
- Keep Coyote Creek Beautiful
- Kern River Conservancy
- Napa County Resource Conservation District
- Nature For All
- Orange County Coastkeeper
- Pacific Environment
- Pacific Institute
- PolicyLink
- Protect American River Canyons (PARC)
- ReScape California
- Resource Conservation District of Greater San Diego County
- Restore the Delta
- River Otter Ecology Project
- River Partners
- Rivers & Lands Conservancy
- Rivers for Change
- Russian Riverkeeper
- San Diego Coastkeeper
- San Diego River Park Foundation
- Save the American River Association
- Sierra Club
- Sierra Foothill Conservancy
- Sierra Nevada Alliance
- Sierra Streams Institute
- Sonoma County Conservation Council
- South Yuba River Citizens League (SYRCL)
- Surfrider Foundation
- Sustainable Conservation
- The Watershed Project
- TOGETHER Bay Area
- Tuolumne River Trust
- Upper Merced River Watershed Council
- Water and Power Law Group
- Water Foundation
- WaterNow Alliance
- Whitebark Institute of Interdisciplinary Environmental Sciences
Colorado River Basin
- Arizona Land and Water Trust
- Arizona State University
- Arizona Water Company
- Colorado River Delta Water Trust
- Friends of the Verde River
- Institute for Tribal Environmental Professionals
- La Paz County/Colorado River Indian Tribes Cooperative Extension Office
- Prescott Creeks
- Rio Reimagined
- Sonoran Institute
- Watershed Management Group
- Yavapai-Apache Nation
- Alba Watershed Consulting
- American Water Works Association
- Audubon Rockies
- Biohabitats – Southern Rocky Mountain Region
- Central Colorado Conservancy
- City of Colorado Springs
- City of Fort Collins
- Coalition for the Poudre River Watershed
- Colorado Department of Public Health & Environment
- Colorado Department of Transportation
- Colorado Parks and Wildlife
- Colorado Rain Catcher
- Colorado Stormwater Center
- Colorado Trout Unlimited
- Colorado Water Conservation Board
- Colorado Water Quality Control Division
- Colorado Water Trust
- Eagle River Watershed Council
- Earth Force
- EPA Region 8 (Mountains and Plains)
- Estes Valley Watershed Coalition
- Frontline Farming
- Greater Arkansas River Nature Association
- Groundwork Denver
- Headwaters Alliance
- INFORM Colorado
- Jefferson County Open Space
- Keep It Clean Partnership
- Lincoln Hills Cares
- Localworks
- Mancos Conservation District
- Middle Colorado Watershed Council
- Mighty Arrow Family Foundation
- Mountain Studies Institute
- Protect Our Rivers
- RiversEdge West
- Roaring Fork Conservancy
- Rocky Mountain Water Environment Association
- Rocky Mountain Whitewater Rafting
- San Juan Citizens Alliance
- Save the Colorado
- Southwest Conservation Corps
- Spirit Environmental
- The Boulder Watershed Collective
- The Nature Conservancy in Colorado
- Trees, Water & People
- Uncompahgre Watershed Partnership
- University of Colorado Boulder
- Upper Colorado River Watershed Group
- Upper Gunnison River Water Conservancy District
- Water Education Colorado
- Western Resource Advocates
- Wild Rose Education
- River Wranglers
- Walker Basin Conservancy
- Canyonlands Field Institute
- Community Action Partnership of Utah
- State of Utah
- Utah Division of Water Resources
- Utah Rivers Council
- Bridger-Teton National Forest
- Snake River Fund
Upper Mississippi and Missouri River Basins
- Adventure Scientists
- Alliance for the Great Lakes
- B.E.A.R. Project, Inc.
- Bitter Root Water Forum
- Blue River Watershed Association
- Bold Bison Communications & Consulting
- Bold Bison Communications and Consulting
- Boone County
- Casting for Recovery
- CEDA
- Center for Humans and Nature
- Center For Neighborhood Technology
- Children and Nature Network
- City of Duluth
- Des Moines Water Works
- East-West Gateway Council of Governments (EWGCOG)
- Elévate
- Environmental Protection Agency (EPA) – Region 5 (Chicago)
- Environmental Protection Agency (EPA) – Region 7 (Kansas City)
- Flathead Basin Commission
- Flathead Lakers
- Flathead Rivers Alliance
- Fox River Ecosystem Partnership
- Freshwater Society
- Friends of Pool 2
- Friends of the Big Sioux River
- Friends of the Chicago River
- Friends of the Forest Preserves
- Friends of the Fox River
- Friends of the Kaw
- Friends of the Mississippi River
- Friends of the River Foundation
- Glacier County Conservation District
- Great Rivers Habitat Alliance
- Greater Gallatin Watershed Council
- Groundwork NRG
- Healthy Schools Campaign
- Heartland Conservation Alliance
- Heartland Cooperative
- Heartlands Conservancy
- Iowa Environmental Council
- Iowa Rivers Revival
- Kansas Alliance for Wetlands and Streams
- Kansas Department of Wildlife and Parks
- Little Village Environmental Justice Organization
- Lower DuPage River Watershed Coalition
- Metropolitan Planning Council
- Middle Fork Crow River Watershed District
- Minnesota Brownfields
- Minnesota Center for Environmental Advocacy
- Minnesota Dragonfly Society
- Missouri Coalition for the Environment
- Missouri Confluence Waterkeeper
- Missouri Master Naturalist
- Missouri River Relief
- Missouri Stream Team Watershed Coalition (Stream Teams United)
- Molson Coors Beverage Company
- Montana Department of Natural Resources and Conservation
- Montana Watershed Coordination Council
- National Great Rivers Research & Education Center
- Nebraska Wildlife Federation
- Openlands
- Prairie Rivers Network
- River Des Peres Watershed Coalition
- River Keepers
- Sierra Club Illinois Chapter
- St. Louis Confluence Riverkeeper
- Sun River Watershed Group
- The Freshwater Lab
- The Watershed Education Network
- Upstream Technologies
- Wichita State University – Environmental Finance Center
- Wilderness Inquiry, Inc.
Rio Grande Basin
- Amigos Bravos
- Empowerment Congress of Doña Ana County
- Los Rios River Runners
- Navajo Ethno-Agriculture
- New Mexico Wilderness Alliance
- Quivira Coalition
- Rio Grande Headwaters Land Trust
- Rio Grande Headwaters Restoration Project
- Rio Grande International Study Center
- The Center for Socially Sustainable Systems (CESOSS)
- The Nature Conservancy in New Mexico
- USDA Forest Service Southwestern Region
Lower Mississippi River Basin / Gulf South / Red River Basins
- Alabama Mountains, Rivers and Valleys RC&D
- Alabama Rivers Alliance
- Alabama Water Watch Association
- Cahaba Riverkeeper
- Cahaba River Society
- Coosa Riverkeeper
- Coosa Riverkeeper
- EAT South
- Freshwater Land Trust
- Friends of the Locust Fork River
- Osprey Initiative
- Anthropocene Alliance
- Anthropocene Alliance
- Apalachicola Riverkeeper
- Current Problems
- Eco-Action
- Florida Defenders of the Environment
- Florida Department of Environmental Protection
- Florida Food Policy Council
- Gaia H2O
- Groundwork Jacksonville
- Matanzas Riverkeeper
- Pensacola State College
- Sanibel Captiva Conservation Foundation
- Save the Water
- St. John’s Riverkeeper
- Chattahoochee River Conservancy
- Chattahoochee Riverkeeper
- Chattooga Conservancy
- Dunwoody Nature Center
- Environmental Education Alliance
- Georgia Department of Natural Resources
- Georgia River Network
- Georgia Wildlife Federation
- Georgia Wildlife Federation
- Ogeechee Riverkeeper
- Savannah Riverkeeper
- Southeast Aquatic Resources Partnership
- South River Watershed Alliance
- Storm Water Systems, Inc.
- The Paideia School
- University of Georgia
- Upper Etowah River Alliance
- Upper Oconee Watershed Network
- West Atlanta Watershed Alliance (WAWA)
- WWALS Watershed Coalition (Suwanee Riverkeeper)
- Keep Liberty Beautiful
- Atchafalaya Basinkeeper
- Capital Region Planning Commission
- Center for Sustainable Engagement & Development Lower 9th Ward
- Coalition for Environment, Equity and Resilience
- Coalition for Environment, Equity and Resilience
- Friends of Lafitte Greenway
- Groundwork New Orleans (NOLA)
- Gulf Coast Center for Law & Policy
- Healthy Community Services
- Healthy Gulf
- Lake Pontchartrain Basin Foundation
- New Orleans City Park
- Pontchartrain Conservancy
- Red River Cleanup
- Sewerage and Water Board of New Orleans
- The Water Collaborative of Greater New Orleans
- Thrive New Orleans
- Urban Conservancy New Orleans
- Pearl Riverkeeper
- AJFC Community Action Agency
- Mississippi Band of Choctaw Indians
- Mississippi Department of Environmental Quality (MDEQ)
- Bayou City Waterkeeper
- Bayou Preservation Association
- Buffalo Bayou Partnership
- City of Dallas, Texas
- City of Horseshoe Bay
- City of Houston
- Coastal Bend Council of Governments
- Concho Valley Community Action Agency
- Environmental Protection Agency (EPA) – Region 6 (Dallas)
- Galveston Bay Foundation
- Houston Water
- International Women’s Alliance Ministries
- Keep Tyler Beautiful
- Lower Brazos Riverwatch
- Merriman Park Elementary Outdoor Learning Center
- Northeast Action Collective
- Northeast Action Collective
- SAFE Diversity Communities
- San Antonio River Authority
- San Antonio Water System
- Texas Commission on Environmental Quality (TCEQ)
- Texas Health and Environment Alliance
- Texas Health and Environment Alliance
- Texas Living Waters Project
- Texas Parks and Wildlife Department
- The Meadows Center for Water and the Environment
- WaterWorks Education Center
- West Street Recovery
New England
- Appalachian Mountain Club
- Black River Action Team (BRAT)
- Charles River Watershed Association
- Connecticut River Conservancy
- Downeast Salmon Federation
- Eightmile River Wild & Scenic Study
- Farmington River Watershed Association
- George Wiley Center
- Groundwork Bridgeport
- Groundwork Lawrence
- Groundwork Rhode Island
- Groundwork Somerville
- Hoosic River Watershed Association
- Housatonic Valley Association
- Ipswich River Watershed Association
- Lowell Parks and Conservation Trust (Lowell Land Trust)
- Massachusetts Department of Environmental Protection
- Massachusetts Department of Fish and Game, Division of Ecological Restoration
- Massachusetts Rivers Alliance
- Mystic River Watershed Association
- Narragansett Bay Estuary Program
- Nashua River Watershed Association
- National Park Service (NPS) | Northeast Region
- Neponset River Watershed Association
- New England Interstate Water Pollution Control Commission (NEIWPCC)
- New Hampshire Rivers Council
- North and South Rivers Watershed Association, Inc.
- Northern Middlesex Council of Governments
- OARS
- Park Watershed
- Penobscot River Restoration Trust
- Pequabuck River Watershed Association
- Pomperaug River Watershed Coalition
- RiverMerrimack
- Save the River-Save the Hills
- The Friends of the Palmer River
- Vermont River Conservancy
- Vermont Wild & Scenic River Committee
- Watershed Action Alliance of Southeastern Massachusetts
- Westport River Watershed Alliance
- White River Partnership
- Wild and Scenic Westfield River Committee
- Wood-Pawcatuck Watershed Association
- Woonasquatucket River Watershed Council
Puerto Rico
Great Lakes Basin
- Allen County Partnership for Water Quality
- Citizens Action Coalition
- Dunes Learning Center
- Elkhart Environmental Center
- Friends of the White River
- Groundwork Indy
- Groundwork Indy
- Hamilton County Tourism, Inc.
- Hoosier Environmental Council
- Indiana Association of Soil and Water Conservation Districts
- Indiana Watershed Leadership Academy
- Marshall County Soil and Water Conservation District
- Purdue University
- Purdue University Northwest
- River Heritage Conservancy
- Southeastern Indiana Recycling District (SEIRD)
- The Watershed Foundation (Tippecanoe Watershed)
- Tippecanoe County Partnership for Water Quality
- Visit Indy
- Wabash River Enhancement Corporation
- Belle Isle Conservancy
- Clinton River Watershed Council
- Community Action Alger-Marquette
- Conservation Resource Alliance
- Flint River Watershed Coalition
- FLOW (For Love of Water)
- Freshwater Future
- Friends of the Detroit River
- Friends of the Rouge
- Friends of the Shiawassee River
- Friends of the St. Clair River
- Grand Valley Metropolitan Council
- Grand Valley State University
- Great Lakes Environmental Law Center
- Great Lakes Environmental Law Center
- Healing Our Waters – Great Lakes Coalition
- Huron Pines Resource Conservation & Development Council, Inc.
- Huron River Watershed Council
- Kalamazoo River Cleanup Coalition
- Keepers of the Shiawassee
- Kresge Foundation
- League of Women Voters of Michigan
- Michigan Community Action
- Michigan Environmental Council
- Michigan Lakes & Streams Association
- Michigan League of Conservation Voters
- Michigan Sailing Club
- Michigan United
- National Wildlife Federation (NWF)
- Odawa Little Traverse Bay Bands
- Ottawa Conservation District
- Pierce Cedar Creek Institute
- Plaster Creek Stewards
- Shiawassee River Water Trail Coalition
- Southwest Michigan Community Action Agency
- State of Michigan
- Tip of the Mitt Watershed Council
- Tri-County Regional Planning Commission
- Upper Peninsula Land Conservancy
- VAEI Van Andel Education Institute
- Voices for Earth Justice
- Washtenaw County Water Resources Commissioner’s Office
- West Michigan Environmental Action Council
- We the People of Detroit
- Yellow Dog Watershed Preserve
- Youth for Global Health & Social Justice
- All Home Services Agency
- Audubon Naturalist Society
- Bronx River Alliance
- Buffalo Niagara Waterkeeper
- Buffalo Niagara Waterkeeper
- Catskill Center for Conservation and Development
- Catskill Mountainkeeper
- Cayuga Lake Watershed Network
- City Parks Foundation (NYC)
- Civic Genius
- Columbia Land Conservancy
- Community Science Institute
- Cornell Cooperative Extension
- Environmental Defense Fund
- Friends of the Upper Delaware River
- Genesee Land Trust
- Grace Communications Foundation
- Groundwork Hudson Valley
- Harlem River Working Group
- Hudson Highlands Land Trust
- Hudson River Estuary Program
- Hudson River Foundation
- Hudson River Park Trust
- Hudson River Sloop Clearwater
- Hudson River Watershed Alliance
- Hudson River Watertrail Association
- Izaak Walton League of America – Project Watershed Central New York
- Marbletown Environmental Conservation Commission
- MSC Industrial Direct
- National Young Farmers Coalition
- Natural Resources Defense Council (NRDC)
- New York City Department of Parks and Recreation
- New York Department of Environmental Conservation
- New York League of Conservation Voters
- New York State Department of Health
- Onondaga Environmental Institute
- Open Space Institute
- Orange County Soil and Water Conservation District
- Partners for Climate Action Hudson Valley
- Randall’s Island Park Alliance
- Regional Plan Association
- Rensselaer Land Trust
- Respect Brooklyn
- Riverkeeper
- Rondout Neversink Stream Program
- Save The Great South Bay
- Scenic Hudson
- The Nature Conservancy in New York
- Waterkeeper Alliance
- Woodstock Land Conservancy
- Butler Soil & Water Conservation District
- City of Akron
- City of Dayton Ohio
- Cuyahoga Soil and Water Conservation District
- Environmental Collaborative
- Junction Coalition
- Keel Haulers Canoe Club
- Lake Erie Waterkeeper
- Lucas Soil and Water Conservation District
- Miami Conservancy District
- Mill Creek Alliance
- Ohio Natural Areas & Preserves Association
- Ohio River Foundation
- Partners for Clean Streams
- Rivers Unlimited
- Rocky River Watershed Council
- The Cleveland Water Alliance
- The Nature Conservancy in Ohio
- Tinker’s Creek Watershed Partners
- Oklahoma Clean Lakes and Watersheds Association
- Ontario Federation of Anglers & Hunters
- Swim Drink Fish Canada
- Toronto Foundation
- Water Rangers
- Children’s Hospital of Wisconsin
- Department of Agriculture, Trade and Consumer Protection (Wisconsin)
- Fox-Wolf Watershed Alliance
- Groundwork Milwaukee
- Interfaith Conference of Greater Milwaukee
- Lakeshore Natural Resource Partnership
- Midwest Environmental Advocates
- Midwest Environmental Advocates
- Milwaukee Metropolitan Sewerage District
- Milwaukee Riverkeeper
- Milwaukee Water Commons
- River Alliance of Wisconsin
- Rock River Coalition
- Sand County Foundation
- The Joy Trip Project
- Washburn County Lakes & Rivers Association
- Wisconsin Academy of Sciences, Arts & Letters
- Wisconsin Department of Natural Resources
- Wisconsin Green Muslims
- Wisconsin Sea Grant
Southeast
- A Clean Wilson Creek
- Arkansas River Valley Area Council
- Appalachian Citizens’ Law Center
- Appalachian Voices
- Banklick Watershed Council
- Bridgestone Americas, Inc.
- Campbell County Democratic Party
- Cape Fear River Watch
- Carolina Wetlands Association
- Catawba Riverkeeper Foundation
- Central Arkansas Development Council
- Clean Water Expected in East Tennessee
- Clean Water for North Carolina
- Coastal Carolina Riverwatch
- Congaree Land Trust
- Conservation Fisheries
- Conservation Voters of South Carolina
- Cumberland River Compact
- Dan River Basin Association
- Ellerbe Creek Watershed Association
- Floyds Fork Environmental Association
- Friends of the Reedy River
- Gills Creek Watershed Association
- Greenville County Soil and Water Conservation Dist
- Harpeth Conservancy
- Haw River Assembly
- Holy City Treks
- Internet of Water
- Jefferson County Kentucky Soil & Water Conservation District
- Kentucky Department for Environmental Protection
- Kentucky River Watershed Watch
- Kentucky Waterways Alliance
- Knox County Stormwater
- Mainspring Conservation Trust
- Mountain Valleys Resource Conservation and Development Council
- National Institute of Environmental Health Sciences (NIEHS)
- Native Expeditions
- New River Conservancy
- North Carolina Commission on Indian Affairs
- North Carolina Conservation Network
- Northcentral Arkansas Development Council
- Oak Ridge National Laboratory
- Ohio Valley Educational Co-Op
- Partners for Environmental Justice (PEJ)
- Piedmont Environmental Alliance
- Renewable Water Resources (ReWa)
- Rivendell Farms of the Carolinas
- RiverLink
- Rocky River Heritage Foundation
- South Carolina Association of Community Action Partnerships
- South Carolina Wildlife Federation
- Southeast Raleigh Promise
- Southern Environmental Law Center, North Carolina
- SouthWings
- Stones River Watershed Association
- Tennessee RiverLine
- Tennessee Wildlife Federation
- The Nature Conservancy in North Carolina
- Town of Chapel Hill
- Tyger River Foundation
- Upstate Forever
- Walton Family Foundation
- Warrior Creek Nature Conservancy
- Watauga Riverkeeper
- WaterWays
- Wild South
- Winyah Rivers Foundation
- World Wildlife Fund – Southeast Rivers and Streams Project Office
Mid-Atlantic
- Agua Fund
- Alice Ferguson Foundation
- Alliance for the Chesapeake Bay
- American Flood Coalition
- American Rivers
- Anacostia Riverkeeper
- Anacostia Waterfront Trust
- Anacostia Watershed Society
- Appalachian Region Independent Power Producers Association (ARIPPA)
- Association of New Jersey Environmental Commissions
- Association of State Drinking Water Administrators (ASDWA)
- Audubon Naturalist Society
- Berks Nature
- Biohabitats – Baltimore HQ
- Blue Water Baltimore
- Brandywine River Restoration Trust
- Brodhead Watershed Association
- Buffalo Creek Watershed Association
- Cacapon Institute
- Camden County Municipal Utilities Authority
- Center for Aquatic Sciences
- Center for Watershed Protection
- Chartiers Creek Watershed Association
- Chesapeake Bay Foundation | Maryland HQ
- Chesapeake Bay Foundation | Virginia
- Chesapeake Bay Trust
- Chesapeake Commons
- Chesapeake Conservancy
- Chesapeake Conservation Landscaping Council
- Chesapeake Legal Alliance
- Children’s Environmental Health Network
- City of Alexandria
- Clean Air Council
- Clean Water Action
- Climate Central
- Coalition for the Delaware River Watershed
- Conewango Creek Watershed Association
- Conservation Partners
- Conservation Voters of Pennsylvania
- Creek Connections
- Darby Creek Valley Association
- DCNR Bureau of Forestry
- Defenders of Wildlife
- Delaware Department of Natural Resources and Environmental Conservation
- Delaware Nature Society
- Delaware River Basin Commission
- Delaware Riverkeeper Network
- Department of Energy & Environment
- Earthjustice
- East Jersey Trout Unlimited
- Eastern Pennsylvania Coalition for Abandoned Mine Reclamation
- Eastern Shore Land Conservancy
- EcoLatinos, Inc.
- Elizabeth River Project
- Elk River Trail Foundation
- Emerald Cities Collaborative
- Enterprise Community Partners
- Environment America
- Environmental Leadership Program
- Environmental Policy Innovation Center
- Environmental Protection Agency (EPA) – Washington, DC
- Foodshed Alliance
- Four Mile Run Conservatory Foundation
- Friends for the Abbott Marshlands
- Friends of Blackwater
- Friends of Deckers Creek
- Friends of Lower Beaverdam Creek
- Friends of Pennypack Park
- Friends of Quincy Run Watershed
- Friends of the Cheat
- Friends of the Heinz Wildlife Refuge at Tinicum
- Friends of the North Fork of the Shenandoah River
- Friends of the Rappahannock
- Friends of the Shenandoah River
- Fundacion Amigos de El Yunque
- Goose Creek Association
- Greater Baltimore Wilderness Coalition
- Green Infrastructure Center
- Green Valleys Watershed Association
- GreenLatinos
- Groundwork RVA
- Guardians of the West Fork
- Gunpowder Riverkeeper
- Halifax Soil & Water Conservation District
- Howard County Watershed Stewards Academy (Univ of Maryland ext)
- Inland Bays Citizen Monitoring Program
- Institute for Conservation Leadership
- Interfaith Partners for the Chesapeake
- Interstate Commission on the Potomac River Basin
- Ironbound Community Corporation
- Island Press
- Izaak Walton League of America
- Jacobs Creek Watershed Association
- James River Association
- Jug Bay Wetlands Sanctuary
- Keith Campbell Foundation
- Lake Hopatcong Foundation Organization
- Lancaster Clean Water Partners Group
- Lancaster County Conservation District
- Lancaster Farmland Trust
- Land Trust Alliance
- Lawyers for Good Government
- League of Women Voters of Delaware
- League of Women Voters of New Jersey
- Little Falls Watershed Alliance
- Living River Trust
- Lower Hudson Partnership for Regional Invasive Species Management
- Lower Susquehanna Riverkeeper Association
- Maryland Coastal Bays Program
- Maryland Department of Natural Resources
- Maryland League of Conservation Voters
- MDB, Inc. (Michael D Baker)
- Million Acre Challenge
- Mountain Lakes Preservation Alliance
- Mountain Watershed Association
- Mt. Cuba Center
- Musconetcong Watershed Association
- Nanticoke Watershed Alliance
- National Aquarium
- National Fish and Wildlife Foundation (NFWF)
- National Park Service
- National Parks Conservation Association
- Natural Lands Trust
- New Jersey Audubon
- New Jersey Citizen Action
- New Jersey Department of Environmental Protection
- New Jersey Future
- New Jersey Highlands Coalition
- New Jersey League of Conservation Voters
- New Jersey Water Supply Authority
- Nine Mile Run Watershed Association
- NJWSA
- North Pocono CARE
- Northern New Jersey Community Foundation
- NY/NJ Baykeeper
- Office of the People’s Counsel
- Oil Region Alliance of Business Industry & Tourism
- Partnership for the Delaware Estuary
- Passaic River Coalition
- Peninsula Master Naturalist
- Penn Future
- PennFuture
- Pennsylvania American Water
- Pennsylvania Department of Conservation and Natural Resources
- Pennsylvania Environmental Council
- Pennsylvania Organization of Watersheds and Rivers (POWR)
- Pennypack Ecological Restoration Trust
- Piedmont Environmental Council
- Pittsburgh United
- Potomac Conservancy
- Potomac Riverkeeper Network
- Princeton Hydro, LLC
- Quakertown Borough
- Raritan Headwaters Association
- River Management Society (RMS)
- Rock Creek Conservancy
- Save the Tygart Watershed Association
- Scenic Rivers Land Trust
- SERCAP
- Shenandoah County Community Development
- ShoreRivers
- Sierra Club – Maryland Chapter
- Southeast Rural Community Assistance Project
- Southern Environmental Law Center
- State of West Virginia
- Stroud Water Research Center
- The Center for Water Security and Cooperation
- The Commons
- The Conservation Fund
- The National Coal Heritage Area
- The Nature Conservancy
- The Student Conservation Association
- The Trust for Public Land | Washington, D.C. HQ
- The Water Center at Penn
- The Watershed Institute
- Thomas Jefferson Soil and Water Conservation District
- Three Rivers Waterkeeper
- Tookany/Tacony-Frankford Watershed Partnership
- Trout Unlimited
- Trust for Public Land
- U.S. Forest Service (USFS) | Washington, D.C.
- U.S. Water Alliance
- United States Bureau of Reclamation
- United States Department of Agriculture (USDA)
- University of Maryland
- Upper Tennessee River Roundtable
- Upstream Pittsburgh
- Urban Waters Federal Partnership
- UrbanPromise
- US Department of the Interior
- US Fish and Wildlife Service (USFWS)
- US Geological Survey (USGS)
- USDA Natural Resources Conservation Service (NRCS)
- Virginia Community Rights Network
- Virginia Conservation Network
- Virginia Department of Environmental Quality
- Virginia Health Catalyst
- Washington County Watershed Alliance
- Washington Suburban Sanitary Commission (WSSC)
- Water Center – University of Pennsylvania
- Water Words That Work
- WaterCitizen Foundation
- WaterGrass
- Waterkeepers Chesapeake
- Watersheds of South Pittsburgh
- WeConservePA
- West Virginia Conservation Agency
- West Virginia Department of Environmental Protection
- West Virginia Division of Natural Resources
- West Virginia Rivers Coalition
- West Virginia Water Research Institute
- White Clay Wild And Scenic River Program
- Wild Virginia
- William Penn Foundation
- Wissahickon Trails
- World Resources Institute
- Yarra Riverkeeper
