Imagine you are playing with toy boats in a big swimming pool. Now, to make the boats move from one end to the other, you need to fill the pool with water. When you fill the pool with water, the boats can easily float and move from one end to the other, right?
Now, let’s think about a canal. Canals are man-made waterways, which means people built it! Canals are made so that boats can easily sail through them, just like your toy boats in the swimming pool. But, in canals, they use something called a “canal pound” to fill it up with water.
So, what's a canal pound? A canal pound is an area in a canal where there is a gate or a lock. This lock or gate helps control the water level in the canal. It works just like a door in your house that you use to control who comes in or goes out. A canal pound gate controls the water flow in the canal, which means it controls how much water comes in and how much water goes out.
When a boat comes into the canal pound, the gate closes, and the water level in the pound rises. Because of this, the boat floats higher, and it becomes easier to open the next gate so that the boat can travel further down the canal. Once the boat passes through the second gate, the gate closes again, and the water level goes back down to its original level. This way, the boats can travel through the canal without any difficulty, just like your toy boats in the swimming pool.
So that's a canal pound; it's an area in a canal with a gate that controls the water level, making it easier for boats to travel through.