Surge channel

When there is a lot of water in a river, it can sometimes go over the banks and flood the area around it. This is called a surge. A surge channel is like a special path created to help the water flow during a surge so that it doesn't flood the surrounding area as badly.

Think of it like a new road that's built just for cars to use during rush hour traffic to avoid a big jam-up. The surge channel allows the extra water in the river to flow faster and more smoothly without causing as much damage to nearby homes and businesses.

The surge channel is made of special materials that can handle the extra water and pressure. It is designed to be wider and deeper than the regular river channel, giving the water more space to flow.

By building surge channels, people can help protect their communities from the damage of floods caused by too much water in the river.