Canadian Watershed Information Network: http://lwbin-dev.cc.umanitoba.ca/
Simon Fraser University Library - Index of open and purchasable geospatial datasets: http://www.lib.sfu.ca/find/other-materials/data-gis/gis/spatial-data
Polar Data Catalogue: https://www.polardata.ca/
Canadian Cryospheric Information Network: https://ccin.ca/
Canadian Open Government Portal: http://open.canada.ca/data/en/dataset
British Columbia Geographic Open Data Portal: http://www2.gov.bc.ca/gov/content/data/geographic-data-services
Canadian National Fire Database: http://cwfis.cfs.nrcan.gc.ca/ha/nfdb
North Dakota GIS Hub https://gishubdata.nd.gov/search/type/dataset