The 2016 flooding of the Hume Dam caused extensive damage to caravan parks in Victoria and inland NSW.
Corowa Caravan Park was one inundated by the Murray River on September 19 and its owners have since sold the site.
Julie Bartlett, whose parents Cheryl and Don Ayres owned the park, says they watched it disappear at an “unbelievable” rate.
With site owners facing damage bills of more than $100 000, they have turned to legal assistance in order to have their voices heard.
Adley Burstyner principal David Burstyner said the firm was approached by landowners in the Albury and Corowa districts concerning alleged flaws in the dam management.
To strengthen the class action, Mr Burstyner says he has united with Harwood Andrews, “the largest Victorian rural and regional law firm”.
Together, the companies are reportedly preparing their case against the Murray Darling Basin Authority.
One objective is to ensure landholders receive “compensation” and the other is guarantee “fair protection from flood litigation” in the future.