Nearly 1 km of new and existing channel was enhanced using bioengineering techniques as part of a flood protection project in the centre of historic Pembroke, South Wales. The upper reach of this small stream previously ran in a confined concrete U channel and provided little ecological or landscape value. A new sinuous channel was created, stabilised and enhanced using bioengineering techniques. Pre-eslablished coir rolls, grown with a site specific species mix was installed at the toe of the stream bank to establish marginal vegetation and prevent bank scour. The stream banks were seeded with a local wildflower mix and protected with a biodegradable erosion control blankets (NAG C125BN). The new channel is an effective flood reduction measure, whilst providing a valuable ecological habitat and a landscape focus in the town.
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The old concrete channel |
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Coir roll and NAG C123BN are installed |
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Completed Bioengineering Works in the new cut channel |
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The new cut channel after 8 months of plant establishment |
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The Diverse wildflowers now established on the stream bank |
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PROJECT BY SALIX
