Cowichan Lake

Date: 

9 Dec 2014

Author: 

Publisher: 

Province of BC, 1990

Date: 

1 Jun 2011

Author: 

Deborah Epps

Publisher: 

BC Ministry of Environment

Cowichan Lake

CowichanLakeEastBathymetry-1990CowichanLakeWestBathymetry-1990Cowichan Lake is in the upper portion of the Cowichan Basin, at an elevation of 164 m. It has a surface area of 62 km2 (6,204 ha), is 31 km in length, with a perimeter of about 110 km. Its average depth is 50 m and its maximum depth is 152 m. For the most part, the lake bottom drops quickly from the shore except for some isolated shallows formed by the alluvial fans of tributary streams.

The Cowichan Lake Weir

CowichanLakeWeir-labelledThe weir on Cowichan Lake is used to control the outflow from the lake into the Cowichan River. For much of the time between late fall and late spring each year, it does nothing, and the weir is referred to as "off control" - since the lake level is above the top of the weir.

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