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Organization Location Revenue Expenses Assets Program Fundr. cost Employees Type Follow
Smith River Alliance INC The mission of the Smith River Alliance is to provide for the long-term protection, restoration and… 94-2650838 · FY2024 Crescent City, CA $7.0M $5.7M $6.0M 94% 1% 13 501(c)(3)
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)
Save the Bay INC SAVE the BAY protects, restores, and improves the ecological health of the narragansett BAY region, including… 05-0343046 · FY2024 Providence, RI $4.9M $5.4M $19.9M 82% 14% 43 501(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)
Anacostia Watershed Society INC 52-1666511 · FY2024 Bladensburg, MD $2.6M $2.8M $2.2M 71% 7% 23 501(c)(3)
North and South Rivers Watershed Association INC To preserve, restore and maintain and conserve the NORTH and SOUTH RIVERS WATERSHED. 23-7181992 · FY2024 Norwell, MA $1.3M $885.6K $4.3M 75% 8% 19 501(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)
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)
California River Watch The organization's primary purpose is to engage in activities that protect, enhance and help restore the… 68-0392889 · FY2025 Sebastopol, CA $932.5K $673.3K $929.6K 96% 0% 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)
Merrimack River Watershed Council INC Mrwc's mission is to protect the MERRIMACK RIVER and promote the wise use of its WATERSHED. This is… 04-2633281 · FY2024 Lawrence, MA $870.1K $853.2K $1.5M 68% 9% 4 501(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)
Suncoast Waterkeeper INC The mission of SUNCOAST WATERKEEPER is to protect and restore the florida suncoast's waterways through… 30-0753993 · FY2024 Sarasota, FL $780.1K $437.8K $663.8K 71% 8% 1 501(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)
Headwaters Basin Project The project's mission is to reduce the risk of high-intensity, catastrophic wildfires and to maintain the… 83-4593371 · FY2024 Nevada City, CA $726.8K $1.6M $675.6K 99% 0% 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)
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)
Loyalhanna Watershed Association INC To protect, conserve and restore the natural resources of the LOYALHANNA creek WATERSHED. The ASSOCIATION… 23-7135993 · FY2023 Ligonier, PA $673.8K $799.1K $3.9M 63% 12% 5 501(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)
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)
Corkscrew Regional Ecosystem Watershed Trust INC The mission of the crew TRUST is the preservation and stewardship of the water resources and natural… 65-0246331 · FY2024 Estero, FL $481.0K $415.1K $2.0M 70% 6% 5 501(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)
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)
Devils River Conservancy The mission of DEVILS RIVER CONSERVANCY is to preserve & protect the DEVILS RIVER & the lands within its… 27-4272004 · FY2024 Austin, TX $440.9K $406.1K $695.0K 89% 0% 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)
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)
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)
Friends of the Eel River Friends of the Eel Rivers mission is to protect and restore the Eel River watershed and its fisheries… 68-0423026 · FY2025 Arcata, CA $358.4K $457.9K $499.9K 80% 9% 4 501(c)(3)
Santa Fe Watershed Association To build a thriving, resilient SANTA FE river WATERSHED through collaboration, stewardship, and education… 86-0996109 · FY2024 Santa Fe, NM $343.2K $340.2K $125.4K 72% 1% 7 501(c)(3)
Purgatoire Watershed Partnership INC Our mission is to restore, protect, and enhance the PURGATOIRE river WATERSHED through stakeholder… 46-1757863 · FY2024 Trinidad, CO $277.4K $259.9K $53.7K 89% 0% 501(c)(3)
Acton-Wakefield Watersheds Alliance INC Protect and restore area WATERSHEDS 20-3341604 · FY2024 Union, NH $248.4K $267.4K $161.6K 68% 18% 10 501(c)(3)
Running Rivers Our mission is to conserve and restore native fish ecosystems by educating and inspiring a diverse community… 81-1625829 · FY2025 Denver, CO $186.5K $142.3K $466.0K 58% 0% 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)
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)
Watershed Restoration Coalition of the Upper Clark Fork The organization is dedicated to restoring water quality, fisheries, and wildlife, and protecting the… 26-1319800 · FY2024 Deer Lodge, MT $143.9K $143.3K $15.8K 100% 0% 501(c)(3)
Gills Creek Watershed Association The mission is to restore and protect the Gills Creek Watershed from such contaminations as trash… 58-2426772 · FY2024 Columbia, SC $131.2K $132.0K $253.5K 82% 0% 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)
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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