Lapdog said - [in 1996 movement in the then 60-70 year old Hume Dam necessitated urgent and long overdue maintenance / upgrades that took almost a decade to complete - it sits on an old fault line. The Dam has only just recently reached capacity again since then and as I speak engineers are checking it out for movement etc.]
Not so Lapdog - Hume Dam water levels were as high as now as recently as 2016 according to this chart I easily made @ Goulburn-Murray Water https://www.g-mwater.com.au/storages/history.asp?ContainerID=humedam