The fonds consists of reports written by Will Koop concerning the protection of forest and public drinking water sources of the Greater Vancouver watersheds. These include Greater Vancouver Regional District - GVRD (currently named Metro Vancouver Regional District) records of Water Committee minutes, Water and Waste Committee minutes, reports, legal records, and results of Freedom of Information requests. In addition to records from GVRD, records collected from various archives institutions including Library and Archives of Canada, BC Archives, UBC Special Collection, and the City of Vancouver Archives, are included. Records from other environmental organizations and activists are also represented in the fonds.
The fonds is arranged into the following series: Greater Vancouver Regional District (GVRD) meeting minutes
(1968-2004), Greater Vancouver Regional District (GVRD) and Will Koop reports [ca. 1931-2004], Lower Seymour Conservation Reserve files (1983-2003), Correspondence (1991-2004), Logging and water quality files (1915-2000), Mark Wareing files (1984-1996), General files on Greater Vancouver Watersheds and forest of British Columbia (1908-1995), Coquitlam watershed files (1893-2002), Forest Hydrology research files (1955-1998), SPEC Campaign and public input files (1988-2002).