[3] The ecoregion extends west from the Skagit Range of the Cascade Mountains at Chilliwack to the Fraser river delta at Richmond and north to include a portion of the Georgia Lowland along the Sunshine Coast.
[3] Forests of Coast Douglas-fir, with an understory of salal, Oregon-grape and moss, are typical of the mature native vegetation found throughout the ecoregion.
Mixed stands of Coast Douglas-fir and Western Hemlock are common, with some dogwood and arbutus occurring on drier sites.
Gleysols, Mesisols, and Humisols are the dominant wetland soils in the region, while Eutric and Dystric Brunisols and some Podzols have developed on sandy to loamy outwash and glacial till in the uplands.
[3] The region includes a mix of urban settlement and agricultural land, comprising both the largest population centre and some of the most fertile farmland in British Columbia.
Coastal salt marshes provide important wildlife habitat in the Fraser delta and Boundary Bay.
[3] There is rapid urban and suburban growth in the Vancouver area and communities in the Fraser Valley and Sunshine Coast.