This series consists of records related to the construction of a new dam at Coquitlam Lake Dam by Vancouver Power Co. Ltd., 1909-1916. Records cover the study and survey of Coquitlam Lake, and attaining approvals for plans, construction, and water use for producing electricity and as a municipal water supply. Records include correspondence, engineering reports and environmental reports.

At the time of construction, Coquitlam Lake was part of the Railway Belt and under the jurisdiction of the dominion government. All records are copies from Canadian Department of the Interior file 656216 nos. 3, 4, 5. The metal pin holding the file together was removed for conservation purposes and the records placed in archival folders. The copied file was likely provided to the Provincial Water Rights Branch for reference around the end of the file in 1913. There are also several loose pages of original records from the BC Comptroller of Water Rights, labelled with file number 8987 dating from 1913 to 1916.

The item is a release print of a documentary film made by the Greater Vancouver Water District ca. 1948. It shows how the Greater Vancouver Water District supplies water to Vancouver and surrounding communities. There is footage of the North Shore watershed, rivers, lakes and storage dams -- including Capilano River, Seymour River, Coquitlam Lake, Little Mountain Reservoir and Pitt Meadows area. It also shows how water from the North Shore gets to the urban areas, pipeline construction and future plans of the GVWD.