The first "back-to" for the closely knit Rawson, Erica and Thomson dam communities will be held over four days next month.
The event coincides with the 40th anniversary of the 1983 completion of the Thomson dam, the source of the bulk of Melbourne's water supply, but also features other industries that have supported the district including timber.

An official opening at Bells Hall in Rawson on Friday, April 14 at 7pm