I have zero problems with mosquitoes as of now. I can't fathom the thought of removing them. My pond is 40 feet deep and clarity many times is over 10 feet. My neighbors who also bought borrow pits of same size and depth chose to remove their cattails and their water clarity is not over 3 feet. My preference would be to have tall trees surrounding the pond because I live in flatland corn country and can't fish if there's much wind. My forester came out and said the willows were Sandbar willows and will be of no danger to the power lines. I have a signed document stating they can't cut down the trees, but they are trying to weasel out of it. I'm going to try to negotiate moving the cottonwoods to the opposite side of the pond or have my forester cut and herbicide the stump. Them herbiciding the trees is not going to be an option.