Coastal Western Hemlock Zone

From NarratingLandscapes

The Coastal Western Hemlock Zone (CWH)sweeps along the entire British Columbia coast and into Alaska and Washington/Oregon. The zone occurs at low to middle elevations mostly west of the Coast Mountains, from the outer to inner coast. The zone also extends east of the Coast Mountains along major river valleys. The CWH occupies elevations from sea level to 900 m on windward slopes in the south and mid-coast (1050 m on leeward slopes), and to 300 m in the north. The Mountain Hemlock zone is usually the subalpine zone above the CWH. This is one of Canada's wettest climates and most productive forest areas.

Sources:

http://www.for.gov.bc.ca/hfd/pubs/Docs/Bro/Bro31.htm

http://www.for.gov.bc.ca/hfd/pubs/docs/Srs/Srs06/chap6.pdf