After four hours immersed in icy cold floodwater fixing a stormwater drain in Renmark, lockmaster and diver Harold Casement surfaced as a hero.
In the thick of the 1956 Murray River flood, the water spilled into the streets and inundated surrounding roads, homes and businesses.
As the river rose, so did the risk of floodwaters gushing through underground pipes and bursting up stormwater drains.
