Minimising erosion by 'schools' beach access

Some work has been carried out recently by the Wairere Road beach access at Wainui commonly referred to as 'schools'.  

When it rains heavily the car park and beach in this area is eroded.  Council has installed 2 retention areas to slow the run-off of stormwater using natural processes.  We think this is a better option than installing large pipes on the beach.  The retention areas are designed to collect and hold stormwater when it rains heavily.  During summer or dry periods the retention areas will remain empty.  When the areas are at capacity the water that overflows will be wide, shallow, sheet-like and less likely to cause erosion.

While the retention areas were designed to drain quickly the heavy rain event in June occurred before the work was finished. Council is still developing the areas to ensure they drain efficiently with the least amount of damage to the beach.

Installing the retention areas has provided an opportunity to landscape this area.  The plan is to plant a low natural barrier on both sides of the ponds using flaxes, aloe vera and salt resistant plants.  The temporary fence will allow plants to establish and keep people away from the water.  Towards the sea, spinafex and pingao (sand dune grasses) will be planted.  Picnic tables and rubbish bins will be installed before summer.  Wainui Beach School are supporting this project and hope you will join them at the community planting day on Sunday 30 August.