Final answer:
Berms and levees are often constructed to be temporary in areas prone to flooding as a measure to redirect or contain water during flood events.
Step-by-step explanation:
In geography, berms and levees are often built to be temporary in areas prone to flooding or as temporary flood mitigation measures. These features are typically constructed using materials such as sandbags or earthen mounds to redirect or contain water during flood events.
For example, during flood emergencies, sandbags may be placed along riverbanks or around buildings to create berms and levees that help prevent water from entering certain areas. These temporary structures can provide short-term relief and protection until more permanent flood control measures can be implemented.