Watershed

Date: 

17 Jun 2015

Author: 

Deborah Epps

Publisher: 

BC Ministry of Environment

The Cowichan Watershed

Water in the Cowichan Basin Ice-Age About 29,000 years ago, precipitation in the form of snow and a cold climate resulted in a period of glaciation that, upon its retreat about 10,000 years ago, formed the deep depression of Cowichan Lake, the much shallower depressions of Somenos Lake and Quamichan Lake, the channels of the Cowichan River and its tributaries, and the gravels, sands, and clays in the Cowichan Estuary.

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