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Organization Location Revenue Expenses Assets Program Fundr. cost Employees Type Follow
Riverkeeper INC Protect the ecological integrity of the hudson river & safeguard the drinking water supply of nyc 13-3204621 · FY2024 Ossining, NY $5.7M $5.3M $4.8M 66% 21% 39 501(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)
Biscayne Bay Waterkeeper INC Biscayne Bay Waterkeeper's (aka Miami Waterkeeper's) mission is to protect South Florida's watershed through… 27-3627697 · FY2024 Coral Gables, FL $4.3M $3.7M $3.9M 70% 21% 19 501(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)
Puget Soundkeeper Alliance To be a trusted leader and collaborator for all communities, in court and on the water, fighting for a… 91-1285783 · FY2024 Seattle, WA $1.3M $1.3M $971.0K 67% 23% 12 501(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)
Rios to Rivers Rios to Rivers inspires the protection of rivers worldwide by investing in underserved and indigenous youth… 46-0720031 · FY2024 Aspen, CO $1.2M $1.2M $1.1M 91% 3% 21 501(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)
Waterlegacy Protect water resources & the communities that rely on them. 26-3999186 · FY2023 Duluth, MN $1.1M $205.5K $990.4K 92% 4% — 501(c)(3)
Cook Inletkeeper To protect the COOK inlet watershed and the life IT sustains. 92-0156450 · FY2024 Homer, AK $973.8K $1.0M $275.7K 61% 8% 15 501(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)
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)
Coosa Riverkeeper Protect, promote, and restore the COOSA river 27-3430200 · FY2024 Birmingham, AL $779.3K $793.2K $471.1K 90% 5% 2 501(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)
Tualatin Riverkeepers TUALATIN RIVERKEEPERS is a community-based organization working to protect and restore oregon's TUALATIN… 94-3184499 · FY2024 Tualatin, OR $588.9K $506.1K $197.0K 75% 10% 11 501(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)
Savannah Riverkeeper Incorporated The SAVANNAH riverkeeper's (srk) mission is to protect the water quality of the SAVANNAH river, the integrity… 58-2630660 · FY2024 Augusta, GA $461.4K $439.5K $233.5K 91% 3% 5 501(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)
Humboldt Waterkeeper 86-1468130 · FY2025 Arcata, CA $182.0K — $172.7K — — — 501(c)(3)
The Riverbank Organization 88-2594293 · FY2024 San Juan Capo, CA $175.6K — $26.0K — — — 501(c)(3)
Tennessee Riverkeeper INC The mission of TENNESSEE RIVERKEEPER is to protect and restore clean water, biological life, recreational… 30-0544517 · FY2024 Decatur, AL $174.2K $227.6K $152.1K 100% 0% 3 501(c)(3)
Protect Our Rivers 86-2101337 · FY2024 Lakewood, CO $159.3K — $86.2K — — — 501(c)(3)
Save the River - Save the Hills INC 06-1613767 · FY2024 Waterford, CT $98.8K — $282.5K — — — 501(c)(3)
Congaree Riverkeeper INC 26-4193711 · FY2024 Columbia, SC $96.1K — $170.9K — — — 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)
Russian River Alliance Russian River Alliance is a non-profit 501(c)3 charitable organization formed as a successor in 2012 to… 46-0847988 · FY2024 Monte Rio, CA $77.2K — $105.6K — — — 501(c)(3)
Cowpasture River Preservation Association 54-1300846 · FY2024 Millboro, VA $72.5K — $205.1K — — — 501(c)(3)
Russian River Community Cares 99-3142296 · FY2024 Forestville, CA $69.0K — $44.0K — — — 501(c)(3)
Save the Worlds Rivers Organized to protect and restore the colorado river and its tributaries through scientific research, public… 47-1936330 · FY2024 Boulder, CO $60.0K — $20.6K — — — 501(c)(3)
Raymond Waterways Protective Association 90-0170146 · FY2025 Raymond, ME $56.6K — $133.0K — — — 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