Geography
The region is bounded to the north by the Coast Mountains and to the southeast by the Cascade Mountains, and is traversed from east to west by the Fraser River. Due to its consistency of climate, flora and fauna, geology and land use, "Lower Mainland" is also the name of an ecoregion—a biogeoclimatic region—that comprises the eastern part of the Georgia Depression and extends from Powell River on the Sunshine Coast to Hope at the eastern end of the Fraser Valley.
One of the mildest climates in Canada, the region has a mean annual temperature in the Lower Mainland is 9°C with a summer mean of 15 °C and a winter mean of 3.5 °C. Annual precipitation ranges from an annual mean of 850 mm in the west end to 2000 mm in the eastern end of the Fraser Valley and at higher elevations. Maximum precipitation occurs as rain in winter. Less than ten percent falls as snow at sea level but the amount of snowfall increases significantly with elevation.
Read more about this topic: Lower Mainland
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