Plans to create B.C.'s first 'living dike' move ahead in Mud Bay

Work is expected to begin later this year with sediment, natural materials and plants added to almost a kilometre of shoreline at three points along Mud Bay. The project will be monitored to determine its impact on water and wave heights during high tides and storms and, if successful, could delay or reduce the need to raise dikes.Start your day with a roundup of B.C.-focused news and opinion delivered straight to your inbox at 7 a.m., Monday to Friday.

The project will involve adding sediment dredged from the Fraser River to gradually increase the elevation of the foreshore in three areas. Sand berms, bags filled with oyster shells, and brushwood dams will be tested to provide stabilization, while vegetation will be planted to enhance the salt marshes.Article contentPhoto by Mitchel Provan, National ResearcThe tests are part of a pilot project to create a living dike along parts of Mud Bay in Surrey and Delta.

It is expected that during storms, the marsh will provide flood protection by decreasing the size and speed of waves, while storing water and reducing coastal erosion. The dike could become a model for projects in other B.C. communities preparing for a sea-level rise of at least a metre by 2100 due to climate change. It also fits with a provincial shift in flood management priorities outlined in B.C.’s draft

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