The removable sections go all the way down, but no reason to drain it in the winter. I am in central Indiana and have had no problems with ice. There does not appear to be a way to fasten it down from the bottom. A cable over the top fastened to anchors in concrete would work. Possibly a concrete base with some eyelets would do the trick. The cable could be tightened with a turnbuckle. I think you should call AgriDrain and ask them though, if you are willing to spend the money. They have been very helpful to me. We had a couple wetland mitigations done on our place and the contractors used the inline versions on both wetlands. They seem to be pretty durable. BTW, I also ordered the 2 foot version.
