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Organization Location Revenue Expenses Assets Program Fundr. cost Employees Type Follow
River Partners RIVER PARTNERS mission is to bring life back to rivers by creating wildlife habitat for the benefit of people… 94-3302335 · FY2023 Chico, CA $56.9M $19.3M $56.8M 87% 1% 126 501(c)(3)
American Rivers INC AMERICAN RIVERS is championing a national effort to protect and restore all RIVERS, from remote mountain… 23-7305963 · FY2024 Washington, DC $53.4M $41.4M $40.1M 77% 13% 131 501(c)(3)
The Partnership Project INC Enhance protection of the natural environment. 52-2192070 · FY2024 Washington, DC $29.2M $34.0M $29.8M 91% 3% 86 501(c)(3)
Lower Columbia Estuary Partnership To preserve and enhance the water quality of the LOWER COLUMBIA river ESTUARY to support its biological and… 93-1249298 · FY2024 Portland, OR $12.3M $12.5M $7.6M 94% 1% 32 501(c)(3)
Communities for a Better Environment To promote clean air, clean water, and the development of toxin-free COMMUNITIES. 94-2998086 · FY2024 Huntington Pk, CA $8.1M $7.9M $9.3M 69% 7% 69 501(c)(3)
Alliance for the Great Lakes To conserve and restore the world's largest fresh water resource using policy, education and local efforts… 23-7104524 · FY2024 Chicago, IL $7.8M $6.3M $13.7M 80% 9% 28 501(c)(3)
Superior Watershed Partnership To assist in the conservation, protection, restoration and sustainability of natural resources. 38-3492677 · FY2024 Marquette, MI $7.1M $5.8M $11.6M 96% 0% 62 501(c)(3)
Mystic River Watershed Association INC The MYSTIC RIVER WATERSHED is a network of rivers, streams and ponds that all flow into the MYSTIC RIVER and… 23-7221094 · FY2024 Arlington, MA $6.5M $6.6M $11.1M 90% 2% 30 501(c)(3)
Clean Water Fund CLEAN WATER FUND promotes CLEAN, safe and affordable WATER, empowering diverse groups of people to work… 52-1043444 · FY2024 Washington, DC $6.1M $7.8M $5.7M 81% 6% — 501(c)(3)
Watershed Institute INC Keeping water clean, safe and healthy is the heart of our mission. We work to protect and restore our water… 21-0649717 · FY2024 Pennington, NJ $5.7M $5.2M $34.0M 84% 8% 69 501(c)(3)
Freshwater Land Trust The acquisition and stewardship of lands that enhance water quality and preserve open space. 72-1387424 · FY2024 Birmingham, AL $4.7M $1.6M $46.7M 56% 19% 7 501(c)(3)
Clean Wisconsin INC To protect and preserve wisconsin's air and water and to create a cleaner environment by being the leading… 39-1413448 · FY2024 Madison, WI $4.0M $3.5M $4.6M 81% 6% 26 501(c)(3)
Partnership for the Umpqua Rivers Improve the environmental integrity and economic stability, foster community appreciation and implement… 93-1298800 · FY2024 Roseburg, OR $2.8M $2.6M $361.6K 91% 0% — 501(c)(3)
Living Lands & Waters To aid in the protection, preservation and restoration of the natural environment of the nations major rivers… 36-4244353 · FY2024 East Moline, IL $2.5M $2.3M $5.4M 82% 5% 32 501(c)(3)
Friends of the Cheat INC To restore, preserve and promote the outstanding natural qualities of the CHEAT river watershed. 55-0739158 · FY2024 Kingwood, WV $2.5M $2.2M $2.9M 85% 3% 9 501(c)(3)
New Hampshire Lakes Association INC To keep NEW hampshire's LAKES clean and healthy, now and in the future. To work with partners, to promote… 22-2668396 · FY2024 Concord, NH $1.8M $1.7M $792.0K 72% 7% 277 501(c)(3)
Chagrin River Watershed Partners INC Preserving and enhancing the scenic and environmental quality of the ecosystem of the CHAGRIN RIVER, lake… 34-1822374 · FY2024 Willoughby, OH $1.7M $1.8M $800.2K 89% 0% 10 501(c)(3)
Tinkers Creek Watershed Partnersinc To protect and restore water quality and habitats of the TINKERS CREEK WATERSHED through community… 20-5465233 · FY2024 Twinsburg, OH $1.6M $1.4M $394.9K 95% 1% 53 501(c)(3)
Nashua River Watershed Association INC To restore and protect water quality and quantity for people, fish and wildlife. To conserve open spaces for… 23-7055674 · FY2023 Groton, MA $1.3M $1.3M $3.6M 68% 17% 17 501(c)(3)
Tookany Tacony Frankford Watershed Partn Ership The organization's mission is to improve the health and vitality of the WATERSHED by collaborating with… 75-3203091 · FY2023 Philadelphia, PA $1.2M $1.2M $916.5K 83% 7% 20 501(c)(3)
Stewardship Partners Stewardship Partners helps private landowners restore and preserve the natural landscapes of WA State. We… 91-1939506 · FY2024 Seattle, WA $1.0M $890.2K $2.0M 84% 4% 8 501(c)(3)
Partners for Environmental Stewardship To establish an Environmental Center of Excellence in Lancaster by developing a public forum where citizens… 93-3187977 · FY2024 Lancaster, PA $1.0M $270.7K $1.5M 26% 5% — 501(c)(3)
Montana Freshwater Partners INC To restore, enhance, and preserve Montana's aquatic resources to maximize their ecological function into the… 45-2804436 · FY2024 Livingston, MT $980.8K $857.6K $3.8M 61% 6% 7 501(c)(3)
Clean Lakes Alliance INC CLEAN LAKES alliance's mission is to continue to build a community of people, businesses, organizations, and… 27-3917243 · FY2024 Madison, WI $939.0K $1.3M $818.1K 71% 18% 13 501(c)(3)
Nisqually River Foundation Foster a healthy Nisqually Watershed through partnerships, engaging volunteers, and environmental education… 55-0858194 · FY2024 Olympia, WA $857.8K $846.5K $416.7K 97% 0% 7 501(c)(3)
Clean River Partners INC Inspire people and organizations to value, protect and improve the cannon RIVER watershed's land and water. 41-1674744 · FY2024 Northfield, MN $622.5K $595.2K $675.5K 77% 7% 8 501(c)(3)
Idaho Rivers United INC Protect and restore the RIVERS of IDAHO. Our focus is the ecological integrity of our RIVERS, but the lens we… 82-0439916 · FY2024 Boise, ID $552.1K $619.8K $104.5K 88% 9% 6 501(c)(3)
Friends of Bass River INC Our mission, through active monitoring, collaboration with local, state & federal entities, and direct… 88-1972334 · FY2024 Yarmouth Port, MA $537.2K $406.5K $289.4K 89% 1% 1 501(c)(3)
Southeastern Wisconsin Watersheds Trust INC Sweet Water is committed to restoring the Greater Milwaukee watersheds to conditions that are healthy for… 27-2718480 · FY2024 Milwaukee, WI $498.8K $396.9K $317.2K 80% 10% 5 501(c)(3)
Friends of Northern Lake Champlain INC The organizations primary purpose is to protect the environment and the surrounding waters of NORTHERN LAKE… 57-1213590 · FY2024 St Albans, VT $456.7K $416.3K $253.1K 100% 0% 3 501(c)(3)
Clean River Project INC To promote environmental awareness and to perform cleaning, maintaining, and preservation of the Merrimack… 26-1904414 · FY2024 Methuen, MA $414.8K $418.9K $316.0K 95% 1% 5 501(c)(3)
30 Mile River Watershed Association To work as a community for clean and healthy lakes, ponds and streams in our watershed.30 Mile is committed… 26-1526329 · FY2024 Mount Vernon, ME $408.9K $339.6K $568.2K 72% 16% 16 501(c)(3)
Friends of the St Clair River Watershed Inspire citizen actions through stewardship, monitoring and education to restore, protect and enhance the ST… 77-0670838 · FY2024 Saint Clair, MI $316.4K $349.7K $259.4K 74% 15% — 501(c)(3)
Alpine Watershed Group To protect, conserve, and restore the watersheds of Alpine County by promoting sustainable community and… 83-0411414 · FY2023 Markleeville, CA $316.1K $288.3K $148.6K 82% 5% 4 501(c)(3)
Missouri Stream Team Watershed Coalition Stream Teams United promotes and supports Missouri Stream Teams and Stream Team Associations. We facilitate… 43-1900822 · FY2024 Shelbyville, MO $265.0K $184.1K $296.6K 87% 2% 3 501(c)(3)
Natural Streams Foundation INC The NATURAL STREAMS FOUNDATION mission is to restore and reclaim water and land sources and former industrial… 88-1705451 · FY2024 Sewickley, PA $242.9K $555.0K $89.0K 68% 7% — 501(c)(3)
St Louis River Alliance Promoting stewardship, providing education outreach and communication on the St Louis River Estuary Area of… 41-1837754 · FY2024 Duluth, MN $228.0K $236.2K $122.4K 68% 4% 8 501(c)(3)
Superior Rivers Watershed Association INC The Mission of the Superior Rivers Watershed Association is to promot and protect clean water resources in… 04-3740575 · FY2024 Ashland, WI $120.3K $114.6K $46.0K 63% 7% 4 501(c)(3)
Clean Streams Rivers and Lakes 86-1647486 · FY2025 Fairfax, VA $63.1K — $7.6K — — — 501(c)(3)
2,046,138
nonprofits
212,946
funders
12,515,252
grants
22,549,931
directors
214,365
service providers
549,896,012
financial lines
Public data from IRS Form 990 e-file & Business Master File. A 990 shows reported financial activity, not measured program outcomes. Assets are from the IRS BMF and may lag the latest filing; fundraising cost is fundraising expenses as a share of total expenses. · philanthropy.org
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