Thank you Huskerduck for your informative response. I am only an interested third party to this thread, and have been trying to collect information on siphons for future reference. You have added a lot to that.
I wonder which adds/subtracts more from water flow: 1) the height of the inlet compared to the outlet, or 2) the amount of head pressure from the inlet being deeper under the normal water level...... As the height of the inlet goes up, the head pressure has to be considered as it would get less. Seems like you would have to consider both aspects if someone was after the strongest flow (and not considering the level at which poor quality water is at, along with if the pipe can withstand that pressure). Possibly one value always trumps the other as far as a gain?
