Green Bay
What is the problem?
In the southern corner of Green Bay the sand/cobble embankment has been prone to overtopping. Although the bank itself appears to be quite stable, there is evidence that the crest is allowing overtopping waves to breach during extreme weather events. Historically this caused flooding down in Bennett Boatyard and also threatens the groundwater body under The Green.
What’s the suggested solution?
To help with overtopping, geobags (geotextile bags filled with small rock) will be placed within the crest and then covered with natural reclaimed embankment material. This will raise the crest by approximately 0.8 m and will extend 70 m along the coast. The new crest will be contoured to blend into the land behind and will be re-vegetated to enhance its natural appearance and strengthen the embankment further.
The Green Drainage Improvements
It is proposed that drainage works at The Green are undertaken to allow for floodwater to flow out to sea quicker, preventing floodwater from sitting on the land for long periods of time. This could involve the improvement and extension of existing ditches and the creation of new ones. Detailed designs are yet to be completed. These works would also be subject to the necessary consents and permissions.