Leschenault Estuary

Seven local government areas are located within the catchment including Bunbury, Collie, Capel, Dardanup, Harvey, Donnybrook-Balingup and Boyup Brook.

About 4,500 years ago the dune system met up with the eastern shore of the estuary separating the lagoon into two sections.

The northern portion filled with mud leaving the southern section as the estuary that exists today.

Construction of The Cut, a channel that opens the estuary into the ocean opposite the Collie River mouth, commenced in February 1950.

The first package composed of tri-cyclic acetone peroxide was found near a jetty and taken to Gloucester Park in Perth to be detonated in a controlled explosion.