The article discusses an emergent scientific and conceptual process called the Great Laurentian Spring (GLS) of 1968 to 1993. Aquatic Ecosystem Health and Management Society (AEHMS) was created in 1989 by founder Mohiuddin Munawar and colleagues, and has headquarters in the Great Laurentian Basin in Canada. The International Hydrological Program (IBP), linked to UNESCO, had a project called International Field Year for Great Lakes (IFYGL) on Lake Ontario in the 1970s.