Which is a traditional flood control method used to keep a stream and flow in its channel?

A traditional flood control method used to keep a stream and its flow in channel is the construction of levees or embankments. These barriers are built along the banks of rivers or streams to prevent overflow during high water events. Additionally, the use of dikes and floodwalls can help redirect excess water while maintaining the natural flow of the waterway. These methods aim to protect surrounding areas from flooding while managing water levels effectively.