Flood controlers

I think its a bad thing that they try to control the flood because, one it can cost a lot of money. Sometimes it cant work. Like when the Mississippi river flooded they made levees to keep that from helping but the levees broke. Then we had to pay a lot of money to fix them. Yes I do admit that it can be a good idea sometimes but not all the time. I think its just better if we find a diferent way to keep it from flooding or just let it flood. Because the levees/walls are not the smartest idea. Another way they control flooding is by floodgates. In floodgates they used to divert water around areas with high value instead going to the ocean directly. This is not the smartest idea because the river or places there putting the extra water could over flow. Then they would have to build somewhere eles to put that water. So in conclusion no matter what you do with the water or where you put it could just back fire. If it dose back fire then what? You will have to find another way to fix it. This could be a smart idea but it also could just be a night mare. You don't want to spend a bunch of money to have it not work right? You can't just test run something like this. I guess you just have to take a risk on it. Im 50/50 on this so I really don't know where I stand on this topic.