Did not realize it is a bottom draw. The water pressure and flow rate are still dependent on the water level above the drain height. Only 4" of freeboard will produce slow flow. Put a small hole in the bottom of a bucket and watch the flow rate out of that hole as you fill the same bucket. The same is true if you start a siphon out of a bucket. As the water level goes down in the bucket, the speed of the water coming through the siphon decreases. If the vertical pipe hold immobile water on the downside of the dam during dry spells, what keeps it from freezing during cold weather? Or are your minimum temps too high?
Last edited by RAH; 12/09/19 06:59 AM.
