Sandy material is dredged from the sea bed for beach replenishment
Storm Repairs 2014 - Shore Road towards Branksome beach
The sand placed on the beach is dredged from the main Swash Channel, used by shipping
entering and exiting Poole harbour. This channel is regularly maintained by Poole
Harbour Commissioners to a depth of 7.5m below chart datumto ensure that large vessels
can navigate safely through Poole’s shallow waters to reach the port.
We work in partnership with the Poole Harbour Commissioners; by replenishing Poole’s
beaches with this dredged sand after last winter’s storms we are helping them to
meet their policy to make beneficial use of dredged material, rather than it being
dumped out at sea.
Sand particle sizes can vary; samples were taken of the sand on our beach prior to
this project, and of the dredged material; they were a good match so the material
use for replenishment is very similar.
The pumped sand is initially black in colour, but do not be alarmed - it is this
colour only because it has been under the sea for a length of time. As soon as it
is exposed to oxygen the beach quickly returns to a beautiful golden colour.
We also leave a ‘sand cliff’ on the seaward side of the beach; you may find it odd
that we don’t create a smooth and gently sloping beach profile but the waves move
sand around all the time and we have discovered in the past that by leaving this
blunt edge nature will find the most appropriate shape for the beach - without our
It might take a little time, but we end up with a sustainable and natural beach profile,
rather than an artificially designed one.
We will leave a ‘sand cliff’ on the seaward side of the beach
Waves will move the sand into an appropriate shape
The end result - a natural beach profile
The dredge area (shown in yellow). The Swash Channel is dredged as part of Poole
Harbour Commissioners ongoing maintenance