How tall will cottonwood and willows grow around a borrow pit 5 acres and 40 feet deep. They are growing up out of the pond competing with reeds and cattails. I believe they are over ten years old right now and 12 feet tall now. I'm in a easement dispute with a power company. We agreed and I got in writing they would not cut these trees down. Now I'm being told because it was authorized by their third party land acquisition company and not by the power company itself, it doesn't count. The poles are 80 feet tall and the wires sag down to 35 to 25 feet depending upon who you ask. Can anyone tell me under these circumstances how tall these trees will actually ever grow? I have pictures, but don't know how to post them on here.

Please help!