Things like building sand bags and dikes are flood defences.
Sand bags can help prevent floods by creating barriers to redirect or contain floodwaters. When strategically placed in low-lying areas or around buildings, sand bags can absorb and block water flow, providing temporary flood protection. The weight and density of sand in the bags can also help stabilize the structure and prevent water from seeping through.
use lots of sand bags
Bulk bags are most commonly used for rainstorms and floods. In these types of situations, the bulk bags are known as sand bags. Using sand bags helps for residents and roads to not flood.
PREPARING FOR A FLOOD;IF YOU KNOW THE FLOOD IS COMING...If you know the flood is coming you could put sand bags by the doors to your home, to keep out some of the wateryou could organise with family or friends somewhere else to stay withIF YOU DON'T KNOW IT'S COMING...always have someone reliable you can turn to to stay withhave sand bags or grit of some sort to soak up water in an emergencyREMEMBER BE PREPARED!
they put sand bags in front of their door to stop the water coming in or the helicopter would come and take them
stay in your house and if you live in a city put sand bags at your front door. dont drive or walk around the town.
Bags and sand are usually provided by local fire departments and safety organizations in areas that are flood prone. As a rule, FEMA doesn't show until after the flood or other disaster that has created an emergency for it to manage.
Sand bags are used in hot air balloons to help control the altitude of the balloon. By adjusting the amount of sand in the bags, the pilot can control the descent of the balloon by releasing sand to increase altitude or dropping sand to decrease altitude.
The answer will depend on how big (or small) the bags of sand are!
they are actually both because they help the water to not get on shore and flood the town
it is 100 bags of sand/ballast