William Cronon's activities in the field of land conservation and environmental protection have included the following:
Governing Council, Wilderness Society (since 1995)
National Board, Trust for Public Land (since 2003)
Advisory Board, Environmental Leadership Program (since 1999)
Advisory Council, Aldo Leopold Nature Center, Monona, WI (since 2007)
Chair, Lakeshore Nature Preserve Committee, UW-Madison (2004-07)
Trustee, Connecticut Nature Conservancy (1989-92)
Vice President, Connecticut Fund for the Environment, 1987-89; Board of Directors (1986-1991)