Final answer:
To prevent water damage, engineers have devised various techniques such as using water-resistant cement to line aqueducts and storing water in reservoirs. Modern devices like swamp coolers and sandbags are also used.
Step-by-step explanation:
The technique devised to prevent water damage in various contexts and time periods includes using different engineering solutions. For example, the Romans developed a water-resistant cement to line aqueducts and stored potable water in reservoirs close to the source. In modern times, devices such as swamp coolers and sandbags are used to prevent water damage.