American Association of Petroleum Geologists
Member
House of Delegates
Academic Liason Committee
Eastern Section Membership Committee

American Geophysical Union
Member

Geological Society of America
Fellow
Member
Editor, The Hydrogeologist (Newsletter) (1997-2001)
Long-range Planning (Publications) Committee (1998-2002)

Association of Ground Water Scientists and Engineers (National Ground Water Association)
Member
Associate Editor for the journal Ground Water (1997-2002)

National Speleological Society
Fellow
Earth Sciences Editor, Journal of Cave and Karst Studies
Recipient of Ralph Stone Research Award
Recipient of Certificate of Merit

Karst Waters Institute
Board of Directors
Vice President for Communications

British Cave Research Association
Member
Recipient of Jeff Jefferson Research Award

International Union of Speleology
Affiliate
Editorial Board, International Journal of Speleology

National Association of Geology Teachers
Member

Northern Ohio Geological Society
Member
Delegate to AAPG

American Library Association
Consultant reviewer, Choice magazine