Bathymetric Mapping of Cowichan Lake In 2012 the Canadian Hydrographic Service (CHS – a division of the Science Branch of the Department of Fisheries and Oceans Canada) completed a bathymetric survey (underwater contour mapping) of Cowichan Lake for the Cowichan Watershed Board. In 2014 the CVRD’s GIS Department will utilize UBCM Gas Tax funding to […]