A river running through a deep pine forest valley

Grant recipient EIN 54-1982624Environment

Who funds Potomac Riverkeeper Inc?

33 private foundations gave Potomac Riverkeeper Inc in Washington, DC $2.8 million across 108 grants, in tax years 2018 to 2025.

Grants listed on funders’ 990-PF returns for tax years 2018 to 2025, read from the IRS e-file on Nov 11, 2026. Returns reach the IRS 5 to 18 months after the year they describe.

Grants received by year

Grants from private foundations by the funder’s tax year. The latest year is in blue; it is not complete until all its returns reach the IRS.

Every foundation grant, by year

108 grants

Each line as the funder listed it on its return, newest year first, then largest.

  1. The Oak Hill FundCharlottesville, VA 2025

    To support both general operations and flagship programs, which include enforcement actions, unpermitted discharges, investigation of and responses to pollution hazards identified through patrolling, and outreach to and mobilization of members and impacted communities.

    $55,000
  2. Carlson Family FoundationChapel Hill, NC 2025

    Major grant, matching grant

    $11,000
  3. The Moody Family FoundationBargersville, IN 2025

    Support the general charitable operations of the organization

    $7,500
  4. The Elmo FoundationCharlottesville, VA 2025

    Environment

    $5,000
  5. Boer Family Foundation IncVillage of Golf, FL 2025

    General

    $1,250
  6. The Charles and Elizabeth Barr FoundationLouisville, KY 2025

    To stop pollution and restore clean water in the potomac and shenandoah rivers

    $1,000
  7. The Sidley Austin FoundationChicago, IL 2025

    General support

    $200
  8. The Peterson Family Foundation IncFairfax, VA 2024

    General support

    $136,000
  9. The Keith Campbell Foundation for the Environment IncBethesda, MD 2024

    General support

    $135,000
  10. J William & Helen D Stuart FoundationPhiladelphia, PA 2024

    general

    $50,000
  11. White House Farm FoundationBristow, VA 2024

    To further charitable purpose

    $50,000
  12. The Morris and Gwendolyn Cafritz FoundationWashington, DC 2024

    Envrionment

    $40,000
  13. Carlson Family FoundationChapel Hill, NC 2024

    Major grant

    $35,000
  14. Frederick Henry Prince Testamentary TrustChicago, IL 2024

    general operating support

    $20,000
  15. Strong Foundation of New YorkNew York, NY 2024

    General support

    $10,000
  16. PatagoniaorgVentura, CA 2024

    To support environmental projects.

    $10,000
  17. The Moody Family FoundationBargersville, IN 2024

    Support the general charitable operations of the organization

    $7,500
  18. The Keith Campbell Foundation for the Environment IncBethesda, MD 2024

    WQ monitoring equipment and hardware

    $6,630
  19. The Keith Campbell Foundation for the Environment IncBethesda, MD 2024

    Building capacity through a deij lens

    $5,000
  20. The Old Dominion Boat Club FoundationAlexandria, VA 2024

    Protection of clean water for all communitites and all those who live in and rely upon the potomac and shenandoah watersheds.

    $2,500
  21. The Stebbins Fund IncNew York, NY 2024

    General

    $2,000
  22. Farview FoundationMilwaukee, WI 2024

    General operating

    $1,000
  23. The Charles and Elizabeth Barr FoundationLouisville, KY 2024

    To stop pollution and restore clean water in the potomac and shenandoah rivers

    $1,000
  24. The Keith Campbell Foundation for the Environment IncBethesda, MD 2023

    General support

    $135,000
  25. The Oak Hill FundCharlottesville, VA 2023

    Continued support for 1) enforcement actions against pollution permit infractions and unpermitted discharges; 2) investigation of and tailored responses to pollution hazards identified through patrolling our waterways; 3) our annual riverpalooza and riopalooza water stewardship events; and 4) outreach to and mobilization of members and impacted communities.

    $90,000
  26. The Peterson Family Foundation IncFairfax, VA 2023

    Potomac riverkeeper inc.

    $65,000
  27. J William & Helen D Stuart FoundationPhiladelphia, PA 2023

    general

    $50,000
  28. The Morris and Gwendolyn Cafritz FoundationWashington, DC 2023

    Environment

    $40,000
  29. White House Farm FoundationBristow, VA 2023

    To further charitable purpose

    $27,500
  30. Frederick Henry Prince Testamentary TrustChicago, IL 2023

    general operating support

    $25,000
  31. Carlson Family FoundationChapel Hill, NC 2023

    Major grant, matching grant

    $17,000
  32. Farview FoundationMilwaukee, WI 2023

    General operating

    $13,000
  33. PatagoniaorgVentura, CA 2023

    To support environmental projects.

    $11,250
  34. Strong Foundation of New YorkNew York, NY 2023

    General support

    $10,000
  35. The Moody Family FoundationBargersville, IN 2023

    Support the general charitable operations of the organization

    $6,600
  36. The Keith Campbell Foundation for the Environment IncBethesda, MD 2023

    Water quality monitoring equipment

    $6,000
  37. Capital Community PartnersWashington, DC 2023

    To clean the potomac river

    $2,000
  38. The Stebbins Fund IncNew York, NY 2023

    General

    $1,000
  39. Farview FoundationMilwaukee, WI 2023

    General operating

    $1,000
  40. The Sidley Austin FoundationChicago, IL 2023

    General support

    $200
  41. Amazonsmile FoundationSeattle, WA 2023

    General support

    $58
  42. The Keith Campbell Foundation for the Environment IncBethesda, MD 2022

    General support

    $135,000
  43. The Oak Hill FundCharlottesville, VA 2022

    To support 1) enforcement actions against pollution permit infractions and unpermitted discharges; 2) investigation of and responses to pollution hazards identified through patrolling; 3) annual water stewardship events; and 4) outreach to and mobilization of members and impacted communities.

    $100,000
  44. The Peterson Family Foundation IncFairfax, VA 2022

    General support

    $75,000
  45. The Schmidt Family FoundationPalo Alto, CA 2022

    Ocean stewardship and research

    $50,000
  46. The Morris and Gwendolyn Cafritz FoundationWashington, DC 2022

    Environment

    $35,000
  47. Carlson Family FoundationChapel Hill, NC 2022

    Major grant

    $34,000
  48. J William & Helen D Stuart FoundationPhiladelphia, PA 2022

    general

    $30,000
  49. Frederick Henry Prince Testamentary TrustChicago, IL 2022

    general operating support

    $30,000
  50. Agua FundincFront Royal, VA 2022

    For general support

    $20,000
  51. White House Farm FoundationBristow, VA 2022

    To further charitable purpose

    $12,380
  52. Strong Foundation of New YorkNew York, NY 2022

    General support

    $7,000
  53. The Moody Family FoundationBargersville, IN 2022

    Support the general charitable operations of the organization

    $6,750
  54. Weil Gotshal & Manges Foundation IncNew York, NY 2022

    Support of the 2021 party on the pier event

    $2,500
  55. David & Lorna Gladstone FoundationMcLean, VA 2022

    Carrying on charitable purposes of exempt organization

    $2,500
  56. Capital Community PartnersWashington, DC 2022

    To clean the potomac river

    $1,500
  57. Farview FoundationMilwaukee, WI 2022

    General operating

    $1,000
  58. The Sidley Austin FoundationChicago, IL 2022

    General support

    $200
  59. The Rockefeller FoundationNew York, NY 2022

    Matching gift program - for general support of its mission

    $150
  60. Amazonsmile FoundationSeattle, WA 2022

    General support

    $69
  61. The Keith Campbell Foundation for the Environment IncBethesda, MD 2021

    General support

    $135,000
  62. The Oak Hill FundCharlottesville, VA 2021

    To support the shenandoah and potomac riverkeepers' efforts to improve the health of critical watersheds of the chesapeake bay.

    $100,000
  63. Agua FundincFront Royal, VA 2021

    For general support

    $80,000
  64. The Peterson Family Foundation IncFairfax, VA 2021

    General support

    $65,000
  65. White House Farm FoundationBristow, VA 2021

    To further charitable purpose

    $40,500
  66. J William & Helen D Stuart FoundationPhiladelphia, PA 2021

    Clean water protection

    $30,000
  67. The Morris and Gwendolyn Cafritz FoundationWashington, DC 2021

    Environment

    $30,000
  68. Frederick Henry Prince Testamentary TrustChicago, IL 2021

    general operating support

    $25,000
  69. Carlson Family FoundationChapel Hill, NC 2021

    Major grant

    $20,000
  70. Strong Foundation of New YorkNew York, NY 2021

    General support

    $5,000
  71. The Keith Campbell Foundation for the Environment IncBethesda, MD 2021

    A more inclusive potomac riverkeeper network

    $5,000
  72. Scott A & Phyllis P Crabtree Family Foundation IncAlexandria, VA 2021

    To protect the public's right to clean water in the potomac and shenandoah rivers

    $5,000
  73. Capital Community PartnersWashington, DC 2021

    To clean the potomac river

    $1,500
  74. Farview FoundationMilwaukee, WI 2021

    General operating

    $1,000
  75. Amazonsmile FoundationSeattle, WA 2021

    General support

    $66
  76. The Keith Campbell Foundation for the Environment IncBethesda, MD 2020

    General support

    $135,000
  77. Agua FundincFront Royal, VA 2020

    For general support

    $100,000
  78. The Peterson Family Foundation IncFairfax, VA 2020

    General support

    $40,000
  79. J William & Helen D Stuart FoundationPhiladelphia, PA 2020

    Clean water protection

    $30,000
  80. The Morris and Gwendolyn Cafritz FoundationWashington, DC 2020

    Environment

    $30,000
  81. Frederick Henry Prince Testamentary TrustChicago, IL 2020

    general operating support

    $25,000
  82. White House Farm FoundationBristow, VA 2020

    To further charitable purpose

    $20,000
  83. Carlson Family FoundationChapel Hill, NC 2020

    Major grant

    $20,000
  84. The Morris and Gwendolyn Cafritz FoundationWashington, DC 2020

    Environment

    $5,000
  85. The Keith Campbell Foundation for the Environment IncBethesda, MD 2020

    Value added monitoring equipment

    $2,602
  86. Weil Gotshal & Manges Foundation IncNew York, NY 2020

    Fellowships

    $2,500
  87. Strong Foundation of New YorkNew York, NY 2020

    General support

    $2,500
  88. Dun FoundationMiddleburg, VA 2020

    Public charity

    $1,000
  89. Farview FoundationMilwaukee, WI 2020

    General operating

    $1,000
  90. Dun FoundationMiddleburg, VA 2020

    Public charity

    $500
  91. Amazonsmile FoundationSeattle, WA 2020

    General support

    $71
  92. The Keith Campbell Foundation for the Environment IncBethesda, MD 2019

    General operating support

    $135,000
  93. Abbie Norman Prince TrustChicago, IL 2019

    general operating support

    $25,000
  94. The Miller-Wehrle Family FoundationWashington, DC 2019

    Unrestricted

    $5,000
  95. Land Family Foundation TrustColumbus, OH 2019

    Bacteria-monitoring lab equiptment

    $5,000
  96. The Keith Campbell Foundation for the Environment IncBethesda, MD 2019

    Gis certification

    $2,500
  97. The Keith Campbell Foundation for the Environment IncBethesda, MD 2019

    River rally

    $2,500
  98. Strong Foundation of New YorkNew York, NY 2019

    General support

    $2,000
  99. Boer Family Foundation IncVillage of Golf, FL 2019

    General

    $400
  100. Frederick Henry Prince Testamentary TrustChicago, IL 2018

    general operating support

    $25,000
  101. The Miller-Wehrle Family FoundationWashington, DC 2018

    Unrestricted

    $5,000
  102. Strong Foundation of New YorkNew York, NY 2018

    General support

    $1,500
  103. The Johnson Foundation IncRacine, WI 2018

    General support

    $1,000
  104. White House Farm FoundationBristow, VA 2018

    To further charitable purpose

    $755
  105. The Bank of America Charitable Foundation IncCharlotte, NC 2018

    Program/operating support

    $500
  106. The Bank of America Charitable Foundation IncCharlotte, NC 2018

    Program/operating support

    $500
  107. Boer Family Foundation IncVillage of Golf, FL 2018

    General

    $400
  108. The Wenger Family FoundationSanta Barbara, CA 2018

    General Purposes

    $250

Funders of similar organizations nearby

Foundations that gave to other environment organizations in Washington, DC and are not among Potomac Riverkeeper Inc’s funders above.

  1. The William & Flora Hewlett FoundationMenlo Park, CA 381 grants Accepts applications $221,148,744 to similar organizations
  2. JPMorgan Chase FoundationNew York, NY 114 grants Preselected only $7,656,675 to similar organizations
  3. The Pfizer Foundation IncNew York, NY 107 grants Preselected only $115,655 to similar organizations
  4. Gordon E and Betty I Moore FoundationPalo Alto, CA 281 grants Preselected only $253,547,129 to similar organizations
  5. Walton Family Foundation IncBentonville, AR 178 grants Preselected only $91,111,661 to similar organizations
  6. The David and Lucile Packard FoundationLos Altos, CA 172 grants Accepts applications $76,176,329 to similar organizations
  7. The Marisla FoundationLaguna Beach, CA 109 grants Accepts applications $22,730,000 to similar organizations
  8. John D and Catherine T MacArthur FoundationChicago, IL 170 grants Preselected only $83,269,097 to similar organizations

About this match

Funders write a recipient’s name and address, not its EIN. We matched these grants to EIN 54-1982624 by name and ZIP code, or by name, city and State against the IRS list of exempt organizations and our list of filers. Grants we could not tie to one organization are not counted here.