No. We all know why gravel removal is there. There are ways of doing it that are not going to damage the environment, or they're going to minimize it.
You said, for example, that you didn't anticipate that the flow of water would be diminished through these large rocks. Well, if you put an obstruction in the river, the river's not a pipe. It's not forced to go through the holes that are remaining; it will go around. So when you put rocks, large rocks, in the river, the water simply goes around. That's what happened there. It was obvious to the naked eye that the water level was considerably lower below the causeway than it was above.
My questions is simple. Why did you allow that fish habitat to be destroyed in that manner?