The North Arm jetty was constructed in 1916 to aid in navigation, creating a 6.9-kilometre-long barrier and altering connectivity between the North Arm of the Fraser River and its estuary. This barrier interrupts the natural movement of juvenile salmon and other fish species, forcing them directly from freshwater river areas into the deeper waters of the Strait of Georgia, bypassing the brackish marsh and sandflat habitats upon which they rely to make the transition from freshwater to saline ocean water.
Raincoast is constructing three 30-metre wide breaches in the North Arm Jetty in the Fraser River Estuary to restore natural migration pathways for juvenile salmon and other fish species and natural movement of freshwater and fine sediments.
Construction of the first breach began in January 2022. Construction of further breaches is expected to follow in 2022 and 2023.
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