Project Brief
To repair a section of bank that has been severely damaged by American Signal crayfish (Pacifastacus leniusculus).
Burrowing crayfish caused a breach in the bank and water was flooding through BA owned land and putting nearby property, a SSSI reed bed, and railway line at risk
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Solution
A soft engineered front edge was constructed and backfilled with gravel rejects and type 1 gravels.
As water slowly percolated through the gravels within the structure, it brought sediment with it which further sealed the bank - repairing the breach whilst also forming a barrier for crayfish.
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