"1946: The Conservation Authorities Act was passed, enabling municipalities to apply for the establishment of conservation authorities in their areas. The Ganaraska Survey was intended to be the model for the study on which each authority was to base its work." (Greening Our Watersheds - Revitalization Strategies 2002 Ch. 5 p.76 by Etobicoke and Mimico Creek Watersheds Task Force - The Toronto and Region Conservation Authority