Cowichan River Stoltz Bluff Stabilization

In the summer of 2006, KWL designed and constructed river works (new channel, terrace and berm) on Vancouver Island's Cowichan River, adjacent to Stoltz Bluffs. This is the largest stream restoration project on Vancouver Island in over 20 years. Initially, KWL analyzed patterns of fine sediment sources and concentrations along the river between Cowichan Lake and Duncan, which suggested that Stoltz Bluff is a major source of fine sediment to the river. This sediment covers spawning gravels downstream and is devastating to fish egg survival.

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