The capital region is comprised of over 300 watersheds (drainage areas with a creek/river) which are over 100 hectares in size, plus numerous smaller named and un-named watersheds. Our coastal areas also have variable sized natural and urban influenced drainage areas that flow towards the harbours and marine shorelines without a creek or river. These natural, watershed-like, drainage areas primarily drain precipitation through the soil naturally, as interflow, finding the lowest point at the shoreline. These urban influenced drainage areas primarily drain impervious surfaces (i.e. roads, parking lots and rooftops) into the storm drain network (i.e. underground pipes and/or ditches) which discharge points are along the harbours and ocean shoreline. In some of these densely urban areas, the storm drain network includes buried historical creeks. These urban influenced areas also have variable rates of natural interflow depending on the total amount of impervious surfaces, treed and vegetated areas, and green infrastructure.

Watershed Land Cover Maps

Provided here are a series of maps that can be used as a simplistic visual assessment of watershed health based on actual land use (forests, agriculture, impervious surfaces, etc.) in a particular watershed. A series of 20 plus maps have been developed, highlighting the key watersheds in the capital region. Read more >>

Watershed Flow Diagrams

Provided here are a series of simplistic illustrations designed to help determine which creek or lake is in which watershed and where it flows. Over 40 flow diagrams, highlighting the major watersheds in the capital region from Sooke to the Saanich Peninsula, have been developed. Read more >>

Soil Infiltration Potential Maps & Report

© Map of the Districts of Victoria and Esquimalt in Vancouver Island. Published 1854, by John Arrowsmith. 2 inches to 1 mile. The National Archives of the UK (TNA): Public Record Office (PRO). Reference #: CO 700/BritishColumbia2

Featured Watersheds

  • Learn more about eight featured watersheds in the region

Stormwater

Stormwater is a major source of pollution in our local creeks, harbours and nearshore marine environment. Read more >>