"Without this work it was likely to deteriorate further and put at risk parts of the battlefields,'' Australia's Veterans Affairs Minister Warren Snowdon said in a statement.
The works were carried out under the supervision of the Turkish authorities, with staff from the Australian embassy and consul in Canakkale monitoring progress.
The government had been assured the work was undertaken with the upmost care and consideration for the significance of the site.
"The work will ensure that Anzac Cove is preserved and protected for the people of Turkey, Australia and New Zealand who visit each year and for many years to come,'' Mr Snowdon said.
Australia's Prime Minister Julia Gillard will attend this year's commemorations.