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Organization	Location	Revenue	Expenses	Assets	Program	Fundr. cost	Employees	Type
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)
Catskill Watershed Corporation The organization's primary purpose is to administer water- shed protection and partnership programs necessary… 14-1798021 · FY2025	Arkville, NY	$24.9M	$21.7M	$223.5M	93%	0%	27	501(c)(3)
Hudson River Housing To provide HOUSING and services to qualified individuals. 22-2456648 · FY2024	Poughkeepsie, NY	$22.1M	$20.8M	$38.0M	89%	0%	277	501(c)(3)
Los Angeles Waterkeeper To fight for the health of the region's waterways, and for sustainable water supplies. 95-4444787 · FY2024	Los Angeles, CA	$5.4M	$5.1M	$2.3M	92%	2%	11	501(c)(3)
Buffalo Niagara Waterkeeper INC BUFFALO NIAGARA WATERKEEPER protects and restores our water and surrounding ecosystems for the benefit of… 22-2993054 · FY2024	Buffalo, NY	$3.7M	$3.7M	$13.1M	65%	7%	28	501(c)(3)
Columbia Riverkeeper Columbia riverkeepers mission is to protect and restore the water quality of the Columbia river and all life… 91-1583492 · FY2024	Hood River, OR	$3.5M	$4.9M	$7.8M	87%	6%	27	501(c)(3)
Chattahoochee Riverkeeper INC Chattahoochee Riverkeeper, Inc. the Riverkeeper is a nonprofit organization whose mission is to educate… 58-2095413 · FY2024	Smyrna, GA	$3.2M	$2.6M	$5.9M	84%	8%	18	501(c)(3)
East of Hudson Watershed Corporation The entity's primary purpose is to reduce the levels of phosphorus in the surface water of the new york city… 45-3809317 · FY2024	Patterson, NY	$3.1M	$2.6M	$12.4M	79%	0%	3	501(c)(3)
Potomac Riverkeeper Network To stop pollution and to restore clean water in the Potomac and shenandoah rivers and their tributaries… 54-1982624 · FY2024	Washington, DC	$2.6M	$2.2M	$2.3M	81%	7%	12	501(c)(3)
New River Conservancy To protect the water woodlands and wildlife of the New River Watershed. 58-1949660 · FY2024	W Jefferson, NC	$2.6M	$2.0M	$3.2M	92%	4%	8	501(c)(3)
Hudson River Sloop Clearwater INC To preserve and protect the Hudson River, its tributaries, and related bodies of water. As an organization… 14-6049022 · FY2023	Beacon, NY	$1.5M	$1.6M	$1.4M	60%	12%	64	501(c)(3)
Catskill Mountainkeeper INC CATSKILL mountainkeeper's mission is to protect our region's forests and wildlands; safeguard air and water… 51-0583769 · FY2023	Livingston Manor, NY	$1.5M	$1.8M	$1.0M	73%	12%	25	501(c)(3)
Vermont River Conservancy INC Protect land along rivers, lakes and wetlands of VERMONT. 03-0347147 · FY2024	Montpelier, VT	$1.3M	$1.0M	$1.9M	78%	3%	4	501(c)(3)
St Johns Riverkeeper INC To defend the ST. JOHNS river and advocate for its protection. 59-3611338 · FY2024	Jacksonville, FL	$1.2M	$908.8K	$2.3M	89%	4%	9	501(c)(3)
Milwaukee Riverkeeper INC Our mission is to protect water quality and wildlife habitat in the river corridors and to advocate for sound… 39-1846305 · FY2023	Milwaukee, WI	$1.2M	$936.8K	$621.7K	81%	9%	10	501(c)(3)
Anacostia Riverkeeper INC To protect and restore the Anacostia River for all those who live work and play in the watershed. 61-1574670 · FY2024	Washington, DC	$897.0K	$768.4K	$999.1K	71%	15%	3	501(c)(3)
Three Rivers Waterkeeper INC To ensure that the allegheny, ohio and monongahela RIVERS are protected and our river and water quality laws… 27-0486655 · FY2024	Pittsburgh, PA	$860.8K	$473.4K	$1.1M	61%	3%	8	501(c)(3)
Hackensack Riverkeeper INC The primary mission of HACKENSACK RIVERKEEPER, INC. Is to protect, preserve and restore the HACKENSACK river… 22-3530496 · FY2024	Hackensack, NJ	$855.4K	$871.4K	$1.5M	85%	9%	36	501(c)(3)
Black Warrior Riverkeeper INC To protect and restore the BLACK WARRIOR river and its tributaries. 72-1537394 · FY2024	Birmingham, AL	$788.8K	$510.4K	$1.4M	90%	3%	5	501(c)(3)
Charleston Waterkeeper CHARLESTON waterkeeper's mission IT to protect and restore charleston's waterways for our community and… 26-4178586 · FY2024	Mt Pleasant, SC	$746.3K	$497.1K	$1.1M	65%	18%	8	501(c)(3)
Flint Riverkeeper INC Restore and preserve the habitat, water quality and flow of the FLINT river watershed for the benefit of… 26-3179215 · FY2024	Albany, GA	$710.5K	$655.5K	$194.5K	67%	25%	4	501(c)(3)
New York City and Lower Hudson Valley Clean Communities INC Environmental and energy security by building local public-private partnerships towards promoting the use of… 13-4361447 · FY2023	New York, NY	$699.8K	$822.6K	$111.6K	96%	0%	8	501(c)(3)
Madison River Foundation INC To preserve, protect, and enhance the MADISON RIVER ecosystem. 56-2333733 · FY2025	Ennis, MT	$696.2K	$486.4K	$567.1K	76%	11%	4	501(c)(3)
Raritan Baykeeper INC The baykeeper's mission is to protect, preserve, and restore the ecological integrity and productivity of the… 22-3617000 · FY2024	Hazlet, NJ	$684.4K	$665.5K	$536.5K	84%	11%	5	501(c)(3)
Greenway Heritage Conservancy Hrv INC Preserve, enhance and restore natural and cultural resources and encourage compatible economic development… 22-2466078 · FY2024	Albany, NY	$577.6K	$586.5K	$386.8K	99%	0%	9	501(c)(3)
Yadkin Riverkeeper INC To preserve and protect the YADKIN pee dee river basin through education, advocacy, and action. 26-1874687 · FY2024	Winston Salem, NC	$510.4K	$457.2K	$172.8K	76%	14%	5	501(c)(3)
Save the River INC To protect and preserve the ecological integrity of st. Lawrence RIVER through advocacy, education and… 16-1125061 · FY2024	Clayton, NY	$483.6K	$483.0K	$1.8M	71%	12%	8	501(c)(3)
The River Alliance of Wisconsin INC To empower people to protect and restore water. 39-1792143 · FY2024	Madison, WI	$477.5K	$773.3K	$1.2M	69%	14%	8	501(c)(3)
Snake River Waterkeeper INC Snake River Waterkeeper exists for the purpose of applying science and law to protect, restore, and sustain… 47-1608920 · FY2024	Boise, ID	$434.6K	$437.7K	$608.5K	40%	3%	1	501(c)(3)
Gunpowder Riverkeeper INC Protection, conservation & restoration of the GUNPOWDER and bush river watersheds 27-1517453 · FY2024	Monkton, MD	$431.5K	$421.4K	$151.7K	96%	1%	1	501(c)(3)
River Rangers International INC Keeping Waterways Safe and Clean for Paddlers and Outdoor Enthusiasts. 83-1825535 · FY2024	Heath, OH	$420.3K	$357.8K	$77.4K	81%	0%	45	501(c)(3)
Spokane Riverkeeper To protect and restore the health and ecological integrity of the SPOKANE river watershed and to defend the… 84-5175870 · FY2024	Spokane, WA	$419.0K	$384.3K	$442.4K	69%	10%	3	501(c)(3)
Cahaba Riverkeeper To defend the ecological integrity of the CAHABA river, its tributaries and watershed 26-2623785 · FY2024	Birmingham, AL	$379.0K	$238.4K	$840.2K	100%	0%	2	501(c)(3)
River Keepers To advocate for the sustainable use of the Red River of the North 45-0417429 · FY2024	Fargo, ND	$249.3K	$239.4K	$432.8K	76%	5%	2	501(c)(3)
Tampa Bay Waterkeeper INC Dedicated to protecting and improving the TAMPA BAY watershed while ensuring swimmable, drinkable, and… 82-1679313 · FY2024	St Petersburg, FL	$215.0K	$194.3K	$100.9K	59%	0%	5	501(c)(3)
Hudson River Watershed Alliance INC To unite and empower communities to protect our shared waters. We work across the HUDSON RIVER WATERSHED to… 45-2772407 · FY2024	Kingston, NY	$163.9K	—	$97.2K	—	—	2	501(c)(3)
Altamaha Riverkeeper INC To Protect and restore the habitat, water quality and flow of the Altamaha River and its watershed… 58-2448037 · FY2024	Macon, GA	$148.8K	$201.5K	$37.1K	81%	10%	2	501(c)(3)
St Marys Riverkeeper INC Founded in 2016, the ST. Mary's RIVERKEEPER organization is committed to protect our clean and beautiful… 81-2073219 · FY2024	St Marys, GA	$78.4K	—	$187.2K	—	—	2	501(c)(3)

2,046,138

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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