Tropic, I've read and reread this post a few times and still am not sure what you are asking. By it's nature, a waterfall is above the pool (source) water, thereby syphoning is an impossibility. I also don't see how this relates to winterizing.
There is a fair chance that I've missed a fine point in what you posted, but I can't seem to make sense of your question.
Welcome to the forum and please let me/ us know a little more about what you're asking. Heaven only knows how many times I've posted what I believed to be a clear post only to reread it a day or so later and realised that I didn't express what I was trying to clearly![]()

.

) and plug it, WHILE IT'S BUBBLING. {the method has been talked about quite a bit on the forum, but if you need more info, just ask}. There are many ways that waterfalls are fed and feed into the pool, a few more specs on your system/ set-up would allow me/ us to give you 'pool specific' advice (knowing if there was a 'collection basin' or if the water just came up and poured down the trough (in which case, the water in the line would equalize to the pool water level - this may be what you were talking about in the original post
)

Bookmarks