The Hoy-Scott Watershed Society fonds consists of the records created and received by the Hoy-Scott Watershed Society and reflects its hatchery operations, salmonid enhancement and environmental stewardship programs, events, and environmental advocacy initiatives in the larger Coquitlam Watershed.

The fonds consists of administrative records, reports, correspondence, event planning files, newspaper clippings, newsletters, publications, plans, a scrapbook, promotional materials, and photographs documenting the activities of the Hoy-Scott Watershed Society and the operations of the Hoy Creek Hatchery in Coquitlam.

The fonds was arranged into four series by the archivist. See the Physical condition and Arrangement note below for more information.

This series consists of records that were original personal fonds and collections acquired and preserved by the Riverview Hospital Historical Society's during its existence. It contains the personal collections of nurses, doctors, general staff, British Columbia's first Provincial Botanist, and a patient at Riverview Hospital. Each file includes records such as study notes, photographs, ephemera, correspondence, newspaper clippings and pamphlets.

The series consists of 15 files, each corresponding to its original creator or donor: Ken Baker, Loretta Barnet, Ultan Patrick Byrne, Jean Campbell, Edna Colvin, John Davidson, Sheila Dumore, William Headridge, Alyce Hockin, Lois Kaldestad, Catherine Murray, Judy Pendry, Dorothy Pocock, Hazel Shepard, and Georgina Bernice Petty.

The series consists of records related to Roderick Charles (R.C.) MacDonald's political career as Reeve of the Corporation of the District of Coquitlam (1924-1941), as a Member of the Legislative Assembly for the Dewdney riding (1941-1952), and as Minister of Mines (1946-1949) and Minister of Municipal Affairs (1949-1952). The records include speeches, newspaper clippings, election materials, and two large scrapbooks that were prepared by staff in his constituency office. The scrapbooks include newspaper clippings, photographs, invitations, programs, pamphlets, and other assorted records.

The collection consists of records gathered by Walter Bruce MacDonald as research materials and content for a biography of Roderick Charles (R.C.) MacDonald. Records include collected photographs of R.C. MacDonald and his family as well as newspaper clippings, photographs, pamphlets, programs, scrapbooks, reports, speeches, certificates, drawings, correspondence, and copies of the book and digital manuscripts for Walter Bruce MacDonald's biography of R.C. MacDonald entitled, "Catch-as-catch-can."