Beach Management Strategies

What is not an advantage of rock walls?

• Stop coastal flooding

• Prevent damage and erosion to property and infrastructure behind the walls

• Do not significantly interfere with transport of longshore drift

• can cause dangerous

  access to beaches

Which is not a positive of Groynes?

• effective for many years

• keep beach in place

• interrupt natural processes — beaches on one side of the barriers starved of sand.

• do not affect access to the beach

Which is not a positive of Artificial Reef?

• require ongoing maintenance and future replacement.

• improves surfing conditions and marine life.

• designed to reduce the impact of incoming waves and capture the sand moving north

• very effective at controlling erosion

Which is a negative of dredging?

• •earthmoving equipment used for a faster replenishment of eroded beaches

• Offshore dredging can increase erosion and affect the ecosystem.

• helps to retain the natural appearance of the beach

• sand placed in the wave-breaking zone uses natural coastal processes to distribute the sand across the beach

Which is a negative of Sand Pumping?

• pipelines deliver large volumes of sand directly to the affected beach areas

• establishes and maintains a safe, navigable entrance to the Tweed River

• restores and maintains the sand moving through natural coastal processes to the southern Gold Coast beaches

• pumping can affect the spawning and breeding of fish

Rock walls are

• An underwater structure made of synthetic materials constructed to promote marine life and protect beaches from erosion

• Earth-moving equipment used to achieve a rapid replenishment of an eroded beach

• Made of large boulders which absorb energy from waves and prevent further erosion of the beach and dunes

• A sand/water mix (slurry) is pumped through a pipeline

Groynes are

• Fences around sand dunes

• Wooden or rock barriers are constructed at right angles to the beach

• An underwater structure made of synthetic (non-natural) materials

• Earth-moving equipment used to achieve a rapid replenishment of an eroded beach

Artificial reef is

• An underwater structure made of synthetic (non-natural) materials

• Wooden or rock barriers are constructed at right angles to the beach to retain material

• sloping structures made of stone and concrete

• A sand/water mix (slurry) is pumped through a pipeline from the sea bed offshore and then discharged on to a beach

Sand pumping/

bypass is

• Sloping structures made of stone and concrete

• Wooden or rock barriers are constructed at right angles to the beach to retain material

• a sand collecting process from the southern side of the Nerang River entrance, that pumps it under the river to outlets on the northern side.

• A dredging vessel transfers sand from an offshore

Beach nourishment — dredging is

• Earth-moving equipment used to achieve a rapid replenishment of an eroded beach

• Wooden or rock barriers are constructed at right angles to the beach to retain material,

• Sometimes made of concrete mixed with rock providing a solid barrier which deflects waves

• A fenced off area of dune