Milwaukee Riverkeeper




Tax ID:


Tax-Exempt Status:


Budget (2016):

Revenue: $669,714
Expenses: $508,521
Assets: $535,328

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Milwaukee Riverkeeper is an environmentalist advocacy group that operates in the Milwaukee River basin. The organization signed on to sponsor the Green New Deal and has opposed the use of nuclear energy. 1

Opposition to Nuclear Energy

In May of 2021, Milwaukee Riverkeeper was one of 715 groups and businesses listed as a co-signer on a letter to the leadership of the U.S. House and Senate that referred to nuclear energy as a “dirty” form of energy production and a “significant” source of pollution. The letter asked federal lawmakers to reduce carbon emissions by creating a “renewable electricity standard” that promoted production of weather dependent power sources such as wind turbines and solar panels, but did not promote low carbon natural gas and zero carbon nuclear energy. 2

Nuclear power plants produce no carbon dioxide or other greenhouse gas emissions, and as of 2021 accounted for 19 percent of American electricity production—the largest source of zero carbon electricity in the United States. 3 An October 2018 proposal from The Nature Conservancy noted that zero-carbon nuclear plants produced 7.8 percent of total world energy output and recommended reducing carbon emissions by increasing nuclear capacity to 33 percent of total world energy output. 4

Milwaukee Riverkeeper was one of more than 600 co-signing organizations on a January 2019 open letter to Congress titled “Legislation to Address the Urgent Threat of Climate Change.” The signatories declared their support for new laws to bring about “100 percent decarbonization” of the transportation sector but denounced nuclear power as an example of “dirty energy” that should not be included in any legislation promoting the use of so-called “renewable energy.” 5


  1. “Group letter to Congress urging Green New Deal passage.” Earthworks. January 10, 2019. Accessed July 27, 2023.
  2. Letter from Center for Biological Diversity et. al. to U.S. Senate Majority Leader Chuck Schumer, U.S. House Speaker Nancy Pelosi, Sen. Joe Manchin, and Rep. Frank Pallone. “RE: CONGRESS SHOULD ENACT A FEDERAL RENEWABLE ELECTRICITY STANDARD AND REJECT GAS AND FALSE SOLUTIONS.” May 12, 2021. Accessed July 25, 2023.*1c9h3t8*_gcl_au*MTc3NjM3MTM1Mi4xNjg5OTU1MzAz
  3. “Nuclear explained.” U.S. Energy Information Administration. Accessed July 25, 2023.
  4. “The Science of Sustainability.” The Nature Conservancy. October 13, 2018. Accessed July 25, 2023.
  5. “Group letter to Congress urging Green New Deal passage.” Earthworks. January 10, 2019. Accessed July 27, 2023.

Supported Movements

  1. Green New Deal (GND)
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Nonprofit Information

  • Accounting Period: September - August
  • Tax Exemption Received: March 1, 1996

  • Available Filings

    Period Form Type Total revenue Total functional expenses Total assets (EOY) Total liabilities (EOY) Unrelated business income? Total contributions Program service revenue Investment income Comp. of current officers, directors, etc. Form 990
    2016 Sep Form 990 $669,714 $508,521 $535,328 $34,163 N $663,558 $3,946 $2,210 $77,885
    2015 Sep Form 990 $510,336 $504,828 $383,461 $45,182 N $483,875 $23,726 $2,638 $0 PDF
    2014 Sep Form 990 $282,846 $358,634 $382,360 $46,247 N $274,526 $4,648 $3,672 $0 PDF
    2013 Sep Form 990 $347,310 $459,266 $426,842 $15,906 N $333,609 $11,410 $2,291 $77,837 PDF
    2012 Sep Form 990 $539,908 $376,595 $547,365 $27,475 N $505,303 $28,671 $5,575 $74,800 PDF
    2011 Sep Form 990 $299,826 $355,599 $375,432 $19,831 N $295,456 $0 $2,763 $0 PDF

    Additional Filings (PDFs)

    Milwaukee Riverkeeper

    MILWAUKEE, WI 53204-2944